mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2025-04-09 14:45:27 +00:00
Code Issues Packages Projects Releases Wiki Activity
1,349,691 Commits 1 Branch 879 Tags
Commit Graph

1349691 Commits

This Branch
This Branch
All Branches
Author SHA1 Message Date
Wei Yang
1b3d3e9f4a microblaze/mm: put mm_cmdline_setup() in .init.text section 
As reported by lkp, there is a section mismatch of mm_cmdline_setup() and
memblock.  The reason is we don't specify the section of
mm_cmdline_setup() and gcc put it into .text.unlikely.

As mm_cmdline_setup() is only used in mmu_init(), which is in .init.text
section, put mm_cmdline_setup() into it too.

Link: https://lkml.kernel.org/r/20250328010136.13139-1-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202503241259.kJV3U7Xj-lkp@intel.com/
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-04-01 15:17:13 -07:00
Jinjiang Tu
9342bc134a mm/memory_hotplug: fix call folio_test_large with tail page in do_migrate_range 
We triggered the below BUG:

 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x2 pfn:0x240402
 head: order:9 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
 flags: 0x1ffffe0000000040(head|node=1|zone=3|lastcpupid=0x1ffff)
 page_type: f4(hugetlb)
 page dumped because: VM_BUG_ON_PAGE(page->compound_head & 1)
 ------------[ cut here ]------------
 kernel BUG at ./include/linux/page-flags.h:310!
 Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
 Modules linked in:
 CPU: 7 UID: 0 PID: 166 Comm: sh Not tainted 6.14.0-rc7-dirty #374
 Hardware name: QEMU QEMU Virtual Machine, BIOS 0.0.0 02/06/2015
 pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
 pc : const_folio_flags+0x3c/0x58
 lr : const_folio_flags+0x3c/0x58
 Call trace:
  const_folio_flags+0x3c/0x58 (P)
  do_migrate_range+0x164/0x720
  offline_pages+0x63c/0x6fc
  memory_subsys_offline+0x190/0x1f4
  device_offline+0xc0/0x13c
  state_store+0x90/0xd8
  dev_attr_store+0x18/0x2c
  sysfs_kf_write+0x44/0x54
  kernfs_fop_write_iter+0x120/0x1cc
  vfs_write+0x240/0x378
  ksys_write+0x70/0x108
  __arm64_sys_write+0x1c/0x28
  invoke_syscall+0x48/0x10c
  el0_svc_common.constprop.0+0x40/0xe0

When allocating a hugetlb folio, between the folio is taken from buddy and
prep_compound_page() is called, start_isolate_page_range() and
do_migrate_range() is called.  When do_migrate_range() scans the head page
of the hugetlb folio, the compound_head field isn't set, so scans the tail
page next.  And at this time, the compound_head field of tail page is set,
folio_test_large() is called by tail page, thus triggers VM_BUG_ON().

To fix it, get folio refcount before calling folio_test_large().

Link: https://lkml.kernel.org/r/20250324131750.1551884-1-tujinjiang@huawei.com
Fixes: 8135d8926c08 ("mm: memory_hotplug: memory hotremove supports thp migration")
Fixes: b62b51d2d159 ("mm: memory_hotplug: remove head variable in do_migrate_range()")
Signed-off-by: Jinjiang Tu <tujinjiang@huawei.com>
Acked-by: Oscar Salvador <osalvador@suse.de>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Nanyong Sun <sunnanyong@huawei.com>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-04-01 15:17:12 -07:00
Mike Rapoport (Microsoft)
38c5ecaadd MAINTAINERS: mm: add entry for secretmem 
Link: https://lkml.kernel.org/r/20250326215541.1809379-5-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Oscar Salvador <osalvador@suse.de>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Dan Willaims <dan.j.williams@intel.com>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-04-01 15:17:12 -07:00
Mike Rapoport (Microsoft)
6985850f3e MAINTAINERS: mm: add entry for numa memblocks and numa emulation 
Link: https://lkml.kernel.org/r/20250326215541.1809379-4-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Oscar Salvador <osalvador@suse.de>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Dan Willaims <dan.j.williams@intel.com>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-04-01 15:17:12 -07:00
Mike Rapoport (Microsoft)
8871b533ef MAINTAINERS: mm: add entry for execmem 
Link: https://lkml.kernel.org/r/20250326215541.1809379-3-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Oscar Salvador <osalvador@suse.de>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Dan Willaims <dan.j.williams@intel.com>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-04-01 15:17:12 -07:00
Mike Rapoport (Microsoft)
59aa44d1ee MAINTAINERS: fixup USERFAULTFD entry 
Patch series "MAINTAINERS: add my isub-entries to MM part."

Following discussion at LSF/MM/BPF I'm adding execmem, secretmem and
numa memblocks sub-entries for MEMORY MANAGEMENT in MAINTAINERS.


This patch (of 4):

Change title to "MEMORY MANAGEMENT - USERFAULTFD" and make it sub-topic in
memory management and add missing include/linux/userfaultfd_k.h and
mailing list

Link: https://lkml.kernel.org/r/20250326215541.1809379-1-rppt@kernel.org
Link: https://lkml.kernel.org/r/20250326215541.1809379-2-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Oscar Salvador <osalvador@suse.de>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Dan Willaims <dan.j.williams@intel.com>
Cc: "Mike Rapoport (IBM)" <rppt@kernel.org>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-04-01 15:17:11 -07:00
Li Wang
983e760bcd selftest/mm: va_high_addr_switch: add ppc64 support check 
Add PPC64 Radix MMU support to the va_high_addr_switch.sh by introducing
check_supported_ppc64().  The function verifies:

  - 5-level paging (PGTABLE_LEVELS >= 5) enable in kernel config
  - Radix MMU (required for PPC64 5-level translation)
  - HugePages availability (needed for some tests)

If any check fails, the test is skipped (ksft_skip).  This ensures
compatibility with Power9/Power10 systems running in Radix MMU mode.

Avoid failures on 4-level paging system:

  # mmap(NULL, MAP_HUGETLB): 0xffffffffffffffff - FAILED
  # mmap(LOW_ADDR, MAP_HUGETLB): 0xffffffffffffffff - FAILED
  # mmap(HIGH_ADDR, MAP_HUGETLB): 0xffffffffffffffff - FAILED
  # mmap(HIGH_ADDR, MAP_HUGETLB) again: 0xffffffffffffffff - FAILED
  # mmap(HIGH_ADDR, MAP_FIXED | MAP_HUGETLB): 0xffffffffffffffff - FAILED
  # mmap(-1, MAP_HUGETLB): 0xffffffffffffffff - FAILED
  # mmap(-1, MAP_HUGETLB) again: 0xffffffffffffffff - FAILED
  # mmap(ADDR_SWITCH_HINT - PAGE_SIZE, 2*HUGETLB_SIZE, MAP_HUGETLB): 0xffffffffffffffff - FAILED
  # mmap(ADDR_SWITCH_HINT , 2*HUGETLB_SIZE, MAP_FIXED | MAP_HUGETLB): 0xffffffffffffffff - FAILED

Link: https://lkml.kernel.org/r/20250327114813.25980-1-liwang@redhat.com
Signed-off-by: Li Wang <liwang@redhat.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Kirill A. Shuemov <kirill.shutemov@linux.intel.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-04-01 15:17:11 -07:00
Mike Rapoport (Microsoft)
7790c9c926 memblock: don't release high memory to page allocator when HIGHMEM is off 
Nathan Chancellor reports the following crash on a MIPS system with
CONFIG_HIGHMEM=n:

  Linux version 6.14.0-rc6-00359-g6faea3422e3b (nathan@ax162) (mips-linux-gcc (GCC) 14.2.0, GNU ld (GNU Binutils) 2.42) #1 SMP Fri Mar 21 08:12:02 MST 2025
  earlycon: uart8250 at I/O port 0x3f8 (options '38400n8')
  printk: legacy bootconsole [uart8250] enabled
  Config serial console: console=ttyS0,38400n8r
  CPU0 revision is: 00019300 (MIPS 24Kc)
  FPU revision is: 00739300
  MIPS: machine is mti,malta
  Software DMA cache coherency enabled
  Initial ramdisk at: 0x8fad0000 (5360128 bytes)
  OF: reserved mem: Reserved memory: No reserved-memory node in the DT
  Primary instruction cache 2kB, VIPT, 2-way, linesize 16 bytes.
  Primary data cache 2kB, 2-way, VIPT, no aliases, linesize 16 bytes
  Zone ranges:
    DMA      [mem 0x0000000000000000-0x0000000000ffffff]
    Normal   [mem 0x0000000001000000-0x000000001fffffff]
  Movable zone start for each node
  Early memory node ranges
    node   0: [mem 0x0000000000000000-0x000000000fffffff]
    node   0: [mem 0x0000000090000000-0x000000009fffffff]
  Initmem setup node 0 [mem 0x0000000000000000-0x000000009fffffff]
  On node 0, zone Normal: 16384 pages in unavailable ranges
  random: crng init done
  percpu: Embedded 3 pages/cpu s18832 r8192 d22128 u49152
  Kernel command line: rd_start=0xffffffff8fad0000 rd_size=5360128  console=ttyS0,38400n8r
  printk: log buffer data + meta data: 32768 + 102400 = 135168 bytes
  Dentry cache hash table entries: 65536 (order: 4, 262144 bytes, linear)
  Inode-cache hash table entries: 32768 (order: 3, 131072 bytes, linear)
  Writing ErrCtl register=00000000
  Readback ErrCtl register=00000000
  Built 1 zonelists, mobility grouping on.  Total pages: 16384
  mem auto-init: stack:all(zero), heap alloc:off, heap free:off
  Unhandled kernel unaligned access[#1]:
  CPU: 0 UID: 0 PID: 0 Comm: swapper Not tainted 6.14.0-rc6-00359-g6faea3422e3b #1
  Hardware name: mti,malta
  $ 0   : 00000000 00000001 81cb0880 00129027
  $ 4   : 00000001 0000000a 00000002 00129026
  $ 8   : ffffdfff 80101e00 00000002 00000000
  $12   : 81c9c224 81c63e68 00000002 00000000
  $16   : 805b1e00 00025800 81cb0880 00000002
  $20   : 00000000 81c63e64 0000000a 81f10000
  $24   : 81c63e64 81c63e60
  $28   : 81c60000 81c63de0 00000001 81cc9d20
  Hi    : 00000000
  Lo    : 00000000
  epc   : 814a227c __free_pages_ok+0x144/0x3c0
  ra    : 81cc9d20 memblock_free_all+0x1d4/0x27c
  Status: 10000002        KERNEL EXL
  Cause : 00800410 (ExcCode 04)
  BadVA : 00129026
  PrId  : 00019300 (MIPS 24Kc)
  Modules linked in:
  Process swapper (pid: 0, threadinfo=(ptrval), task=(ptrval), tls=00000000)
  Stack : 81f10000 805a9e00 81c80000 00000000 00000002 814aa240 000003ff 00000400
          00000000 81f10000 81c9c224 00003b1f 81c80000 81c63e60 81ca0000 81c63e64
          81f10000 0000000a 0000001f 81cc9d20 81f10000 81cc96d8 00000000 81c80000
          81c9c224 81c63e60 81c63e64 00000000 81f10000 00024000 00028000 00025c00
          90000000 a0000000 00000002 00000017 00000000 00000000 81f10000 81f10000
          ...
  Call Trace:
  [<814a227c>] __free_pages_ok+0x144/0x3c0
  [<81cc9d20>] memblock_free_all+0x1d4/0x27c
  [<81cc6764>] mm_core_init+0x100/0x138
  [<81cb4ba4>] start_kernel+0x4a0/0x6e4

  Code: 1080ffd5  02003825  2467ffff <8ce30000> 7c630500  1060ffd4  00000000  8ce30000  7c630180

The crash happens because commit 6faea3422e3b ("arch, mm: streamline
HIGHMEM freeing") too eagerly frees high memory to the page allocator even
when HIGHMEM is disabled.

Make sure that when CONFIG_HIGHMEM=n the high memory is not released to the
page allocator.

Link: https://lore.kernel.org/all/20250323190647.GA1009914@ax162
Link: https://lkml.kernel.org/r/20250325114928.1791109-3-rppt@kernel.org
Reported-by: Nathan Chancellor <nathan@kernel.org>
Fixes: 6faea3422e3b ("arch, mm: streamline HIGHMEM freeing")
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Betkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleinxer <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-04-01 15:17:11 -07:00
Mike Rapoport (Microsoft)
2ebc3b68ac mm/mm_init: init holes in the end of the memory map for FLATMEM 
Patch series "mm: fixes for fallouts from mem_init() cleanup".

These are the fixes for fallouts from mem_init() cleanup reported by
Nathan Chancellor and kbuild.  The details are in the commit messages.


This patch (of 2):

Kernel test robot reports the following crash on 32-bit system with
FLATMEM and DEBUG_VM_PGFLAGS enabled:

[    0.478822][    T0] kernel BUG at include/linux/page-flags.h:536!
[    0.479312][    T0] Oops: invalid opcode: 0000 [#1] PREEMPT SMP
[    0.479768][    T0] CPU: 0 UID: 0 PID: 0 Comm: swapper Not tainted 6.14.0-rc6-00357-g8268af309d07 #1
[    0.480470][    T0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 0.481260][ T0] EIP: reserve_bootmem_region (include/linux/page-flags.h:536)
[ 0.481683][ T0] Code: 5d c3 01 f1 89 c8 ba e1 38 f4 c3 e8 1e 37 8e fc 0f 0b b8 90 e2 62 c4 e8 e2 05 5e fc 01 f1 89 c8 ba be 85 f7 c3 e8 04 37 8e fc <0f> 0b b8 80 e2 62 c4 e8 c8 05 5e fc 55 89 e5 53 57 56 83 ec 10 89
[    0.483177][    T0] EAX: 00000000 EBX: c425df50 ECX: 00000000 EDX: 00000000
[    0.483712][    T0] ESI: 017ffc00 EDI: ffffffff EBP: c425df34 ESP: c425df2c
[    0.484248][    T0] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00210046
[    0.484846][    T0] CR0: 80050033 CR2: 00000000 CR3: 04b48000 CR4: 00000090
[    0.485376][    T0] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[    0.485907][    T0] DR6: fffe0ff0 DR7: 00000400
[    0.486253][    T0] Call Trace:
[ 0.486494][ T0] ? __die_body (arch/x86/kernel/dumpstack.c:478)
[ 0.486822][ T0] ? die (arch/x86/kernel/dumpstack.c:?)
[ 0.487099][ T0] ? do_trap (arch/x86/kernel/traps.c:? arch/x86/kernel/traps.c:197)
[ 0.487409][ T0] ? do_error_trap (arch/x86/kernel/traps.c:217)
[ 0.487752][ T0] ? reserve_bootmem_region (include/linux/page-flags.h:536)
[ 0.488153][ T0] ? exc_overflow (arch/x86/kernel/traps.c:301)
[ 0.488490][ T0] ? handle_invalid_op (arch/x86/kernel/traps.c:254)
[ 0.488869][ T0] ? reserve_bootmem_region (include/linux/page-flags.h:536)
[ 0.489271][ T0] ? exc_invalid_op (arch/x86/kernel/traps.c:316)
[ 0.489619][ T0] ? handle_exception (arch/x86/entry/entry_32.S:1055)
[ 0.489996][ T0] ? exc_overflow (arch/x86/kernel/traps.c:301)
[ 0.490332][ T0] ? reserve_bootmem_region (include/linux/page-flags.h:536)
[ 0.490733][ T0] ? exc_overflow (arch/x86/kernel/traps.c:301)
[ 0.491068][ T0] ? reserve_bootmem_region (include/linux/page-flags.h:536)
[ 0.491470][ T0] memmap_init_reserved_pages (mm/memblock.c:2203)
[ 0.491887][ T0] free_low_memory_core_early (mm/memblock.c:?)
[ 0.492302][ T0] memblock_free_all (mm/memblock.c:2272 include/linux/atomic/atomic-arch-fallback.h:546 include/linux/atomic/atomic-long.h:123 include/linux/atomic/atomic-instrumented.h:3261 include/linux/mm.h:67 mm/memblock.c:2273)
[ 0.492659][ T0] mem_init (arch/x86/mm/init_32.c:735)
[ 0.492952][ T0] mm_core_init (mm/mm_init.c:2730)
[ 0.493271][ T0] start_kernel (init/main.c:958)
[ 0.493604][ T0] i386_start_kernel (arch/x86/kernel/head32.c:79)
[ 0.493969][ T0] startup_32_smp (arch/x86/kernel/head_32.S:292)

The crash happens because after commit 8268af309d07 ("arch, mm: set
max_mapnr when allocating memory map for FLATMEM") max_mapnr is rounded up
to MAX_ORDER_NR_PAGES and the pages in the end of the memory map are
passing pfn_valid() check in reserve_bootmem_region().

Make sure that that pages in the end of the memory map are initialized,
just like the pages in the end of the last section for SPARSEMEM.

Link: https://lkml.kernel.org/r/20250325114928.1791109-1-rppt@kernel.org
Link: https://lkml.kernel.org/r/20250325114928.1791109-2-rppt@kernel.org
Fixes: 8268af309d07 ("arch, mm: set max_mapnr when allocating memory map for FLATMEM")
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reported-by: kernel test robot <oliver.sang@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202503241424.d16223ec-lkp@intel.com
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Betkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleinxer <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-04-01 15:17:11 -07:00
Peter Xu
4a0cb63144 MAINTAINERS: add peterx as userfaultfd reviewer 
Add an entry for userfaultfd and make myself a reviewer of it, just in
case it helps people manage the cc list.

I named it MEMORY USERFAULTFD, could be a bad name, but then it can be
together with the MEMORY* entries when everything is in alphabetic order,
which is definitely a benefit.

The line may not change much on how I'd work with userfaultfd; I think
I'll do the same as before..  But maybe it still, more or less, adds some
responsibility on top, indeed.

[akpm@linux-foundation.org: add include/linux/userfaultfd_k.h, per Mike]
[akpm@linux-foundation.org: fix misordering]
Link: https://lkml.kernel.org/r/20250322002124.131736-1-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Acked-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Mike Rapoport <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-04-01 15:17:10 -07:00
Ye Liu
bd145bdd26 mm/page_alloc: replace flag check with PageHWPoison() in check_new_page_bad() 
This patch replaces the direct check for the __PG_HWPOISON flag with the
PageHWPoison() macro, improving code readability and maintaining
consistency with other parts of the memory management code.

Link: https://lkml.kernel.org/r/20250320063346.489030-1-ye.liu@linux.dev
Signed-off-by: Ye Liu <liuye@kylinos.cn>
Reviewed-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-04-01 15:17:10 -07:00
Taotao Chen
7f29070f4c mm/damon/core: simplify control flow in damon_register_ops() 
The function logic is not complex, so using goto is unnecessary.  Replace
it with a straightforward if-else to simplify control flow and improve
readability.

Link: https://lkml.kernel.org/r/Z9vxcPCw8tDsjKw1@OneApple
Signed-off-by: Taotao Chen <chentaotao@didiglobal.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-04-01 15:17:10 -07:00
Harry Yoo
7fa46cdfff mm/kasan: use SLAB_NO_MERGE flag instead of an empty constructor 
Use SLAB_NO_MERGE flag to prevent merging instead of providing an empty
constructor.  Using an empty constructor in this manner is an abuse of
slab interface.

The SLAB_NO_MERGE flag should be used with caution, but in this case, it
is acceptable as the cache is intended solely for debugging purposes.

No functional changes intended.

Link: https://lkml.kernel.org/r/20250318015926.1629748-1-harry.yoo@oracle.com
Signed-off-by: Harry Yoo <harry.yoo@oracle.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com>
Acked-by: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Dmitriy Vyukov <dvyukov@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-04-01 15:17:10 -07:00
Johannes Weiner
7a95a05f15 mm: page_alloc: fix defrag_mode's retry & OOM path 
Brendan points out that defrag_mode doesn't properly clear
ALLOC_NOFRAGMENT on its last-ditch attempt to allocate.  But looking
closer, the problem is actually more severe: it doesn't actually *check*
whether it's already retried, and keeps looping.  This means the OOM path
is never taken, and the thread can loop indefinitely.

This is verified with an intentional OOM test on defrag_mode=1, which
results in the machine hanging.  After this patch, it triggers the OOM
kill reliably and recovers.

Clear ALLOC_NOFRAGMENT properly, and only retry once.

Link: https://lkml.kernel.org/r/20250401041231.GA2117727@cmpxchg.org
Fixes: e3aa7df331bc ("mm: page_alloc: defrag_mode")
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reported-by: Brendan Jackman <jackmanb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-04-01 15:17:09 -07:00
Lorenzo Stoakes
36eed54008 mm/mremap: do not set vrm->vma NULL immediately prior to checking it 
This seems rather unwise.  If we cannot merge, extend, then we need to
recall the original VMA to see if we need to uncharge.

If we do need to, do so.

Link: https://lkml.kernel.org/r/b2fb6b9c-376d-4e9b-905e-26d847fd3865@lucifer.local
Fixes: d5c8aec0542e ("mm/mremap: initial refactor of move_vma()")
Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reported-=by: "Lai, Yi" <yi1.lai@linux.intel.com>
Closes: https://lore.kernel.org/linux-mm/Z+lcvEIHMLiKVR1i@ly-workstation/
Cc: Liam R. Howlett <Liam.Howlett@Oracle.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Harry Yoo <harry.yoo@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2025-04-01 15:17:09 -07:00
Linus Torvalds
25601e8544 Char/Misc/IIO driver updates for 6.15-rc1 
Here is the big set of char, misc, iio, and other smaller driver
 subsystems for 6.15-rc1.  Lots of stuff in here, including:
   - loads of IIO changes and driver updates
   - counter driver updates
   - w1 driver updates
   - faux conversions for some drivers that were abusing the platform bus
     interface
   - coresight driver updates
   - rust miscdevice binding updates based on real-world-use
   - other minor driver updates
 
 All of these have been in linux-next with no reported issues for quite a
 while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCZ+mNdQ8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+ylktACfYJix41jCCDbiFjnu7Hz4OIdcrUsAnRyF164M
 1n5MhEhsEmvQj7WBwQLE
 =AmmW
 -----END PGP SIGNATURE-----

Merge tag 'char-misc-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char / misc / IIO driver updates from Greg KH:
 "Here is the big set of char, misc, iio, and other smaller driver
  subsystems for 6.15-rc1. Lots of stuff in here, including:

   - loads of IIO changes and driver updates

   - counter driver updates

   - w1 driver updates

   - faux conversions for some drivers that were abusing the platform
     bus interface

   - coresight driver updates

   - rust miscdevice binding updates based on real-world-use

   - other minor driver updates

  All of these have been in linux-next with no reported issues for quite
  a while"

* tag 'char-misc-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (292 commits)
  samples: rust_misc_device: fix markup in top-level docs
  Coresight: Fix a NULL vs IS_ERR() bug in probe
  misc: lis3lv02d: convert to use faux_device
  tlclk: convert to use faux_device
  regulator: dummy: convert to use the faux device interface
  bus: mhi: host: Fix race between unprepare and queue_buf
  coresight: configfs: Constify struct config_item_type
  doc: iio: ad7380: describe offload support
  iio: ad7380: add support for SPI offload
  iio: light: Add check for array bounds in veml6075_read_int_time_ms
  iio: adc: ti-ads7924 Drop unnecessary function parameters
  staging: iio: ad9834: Use devm_regulator_get_enable()
  staging: iio: ad9832: Use devm_regulator_get_enable()
  iio: gyro: bmg160_spi: add of_match_table
  dt-bindings: iio: adc: Add i.MX94 and i.MX95 support
  iio: adc: ad7768-1: remove unnecessary locking
  Documentation: ABI: add wideband filter type to sysfs-bus-iio
  iio: adc: ad7768-1: set MOSI idle state to prevent accidental reset
  iio: adc: ad7768-1: Fix conversion result sign
  iio: adc: ad7124: Benefit of dev = indio_dev->dev.parent in ad7124_parse_channel_config()
  ...
 2025-04-01 11:26:08 -07:00
Linus Torvalds
2cd5769fb0 Driver core updates for 6.15-rc1 
Here is the big set of driver core updates for 6.15-rc1.  Lots of stuff
 happened this development cycle, including:
   - kernfs scaling changes to make it even faster thanks to rcu
   - bin_attribute constify work in many subsystems
   - faux bus minor tweaks for the rust bindings
   - rust binding updates for driver core, pci, and platform busses,
     making more functionaliy available to rust drivers.  These are all
     due to people actually trying to use the bindings that were in 6.14.
   - make Rafael and Danilo full co-maintainers of the driver core
     codebase
   - other minor fixes and updates.
 
 This has been in linux-next for a while now, with the only reported
 issue being some merge conflicts with the rust tree.  Depending on which
 tree you pull first, you will have conflicts in one of them.  The merge
 resolution has been in linux-next as an example of what to do, or can be
 found here:
 	https://lore.kernel.org/r/CANiq72n3Xe8JcnEjirDhCwQgvWoE65dddWecXnfdnbrmuah-RQ@mail.gmail.com
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCZ+mMrg8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+ylRgwCdH58OE3BgL0uoFY5vFImStpmPtqUAoL5HpVWI
 jtbJ+UuXGsnmO+JVNBEv
 =gy6W
 -----END PGP SIGNATURE-----

Merge tag 'driver-core-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updatesk from Greg KH:
 "Here is the big set of driver core updates for 6.15-rc1. Lots of stuff
  happened this development cycle, including:

   - kernfs scaling changes to make it even faster thanks to rcu

   - bin_attribute constify work in many subsystems

   - faux bus minor tweaks for the rust bindings

   - rust binding updates for driver core, pci, and platform busses,
     making more functionaliy available to rust drivers. These are all
     due to people actually trying to use the bindings that were in
     6.14.

   - make Rafael and Danilo full co-maintainers of the driver core
     codebase

   - other minor fixes and updates"

* tag 'driver-core-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (52 commits)
  rust: platform: require Send for Driver trait implementers
  rust: pci: require Send for Driver trait implementers
  rust: platform: impl Send + Sync for platform::Device
  rust: pci: impl Send + Sync for pci::Device
  rust: platform: fix unrestricted &mut platform::Device
  rust: pci: fix unrestricted &mut pci::Device
  rust: device: implement device context marker
  rust: pci: use to_result() in enable_device_mem()
  MAINTAINERS: driver core: mark Rafael and Danilo as co-maintainers
  rust/kernel/faux: mark Registration methods inline
  driver core: faux: only create the device if probe() succeeds
  rust/faux: Add missing parent argument to Registration::new()
  rust/faux: Drop #[repr(transparent)] from faux::Registration
  rust: io: fix devres test with new io accessor functions
  rust: io: rename `io::Io` accessors
  kernfs: Move dput() outside of the RCU section.
  efi: rci2: mark bin_attribute as __ro_after_init
  rapidio: constify 'struct bin_attribute'
  firmware: qemu_fw_cfg: constify 'struct bin_attribute'
  powerpc/perf/hv-24x7: Constify 'struct bin_attribute'
  ...
 2025-04-01 11:02:03 -07:00
Linus Torvalds
d6b02199cd - The 7 patch series "powerpc/crash: use generic crashkernel 
reservation" from Sourabh Jain changes powerpc's kexec code to use more
   of the generic layers.
 
 - The 2 patch series "get_maintainer: report subsystem status
   separately" from Vlastimil Babka makes some long-requested improvements
   to the get_maintainer output.
 
 - The 4 patch series "ucount: Simplify refcounting with rcuref_t" from
   Sebastian Siewior cleans up and optimizing the refcounting in the ucount
   code.
 
 - The 12 patch series "reboot: support runtime configuration of
   emergency hw_protection action" from Ahmad Fatoum improves the ability
   for a driver to perform an emergency system shutdown or reboot.
 
 - The 16 patch series "Converge on using secs_to_jiffies() part two"
   from Easwar Hariharan performs further migrations from
   msecs_to_jiffies() to secs_to_jiffies().
 
 - The 7 patch series "lib/interval_tree: add some test cases and
   cleanup" from Wei Yang permits more userspace testing of kernel library
   code, adds some more tests and performs some cleanups.
 
 - The 2 patch series "hung_task: Dump the blocking task stacktrace" from
   Masami Hiramatsu arranges for the hung_task detector to dump the stack
   of the blocking task and not just that of the blocked task.
 
 - The 4 patch series "resource: Split and use DEFINE_RES*() macros" from
   Andy Shevchenko provides some cleanups to the resource definition
   macros.
 
 - Plus the usual shower of singleton patches - please see the individual
   changelogs for details.
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZ+nuqwAKCRDdBJ7gKXxA
 jtNqAQDxqJpjWkzn4yN9CNSs1ivVx3fr6SqazlYCrt3u89WQvwEA1oRrGpETzUGq
 r6khQUIcQImPPcjFqEFpuiSOU0MBZA0=
 =Kii8
 -----END PGP SIGNATURE-----

Merge tag 'mm-nonmm-stable-2025-03-30-18-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:

 - The series "powerpc/crash: use generic crashkernel reservation" from
   Sourabh Jain changes powerpc's kexec code to use more of the generic
   layers.

 - The series "get_maintainer: report subsystem status separately" from
   Vlastimil Babka makes some long-requested improvements to the
   get_maintainer output.

 - The series "ucount: Simplify refcounting with rcuref_t" from
   Sebastian Siewior cleans up and optimizing the refcounting in the
   ucount code.

 - The series "reboot: support runtime configuration of emergency
   hw_protection action" from Ahmad Fatoum improves the ability for a
   driver to perform an emergency system shutdown or reboot.

 - The series "Converge on using secs_to_jiffies() part two" from Easwar
   Hariharan performs further migrations from msecs_to_jiffies() to
   secs_to_jiffies().

 - The series "lib/interval_tree: add some test cases and cleanup" from
   Wei Yang permits more userspace testing of kernel library code, adds
   some more tests and performs some cleanups.

 - The series "hung_task: Dump the blocking task stacktrace" from Masami
   Hiramatsu arranges for the hung_task detector to dump the stack of
   the blocking task and not just that of the blocked task.

 - The series "resource: Split and use DEFINE_RES*() macros" from Andy
   Shevchenko provides some cleanups to the resource definition macros.

 - Plus the usual shower of singleton patches - please see the
   individual changelogs for details.

* tag 'mm-nonmm-stable-2025-03-30-18-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (77 commits)
  mailmap: consolidate email addresses of Alexander Sverdlin
  fs/procfs: fix the comment above proc_pid_wchan()
  relay: use kasprintf() instead of fixed buffer formatting
  resource: replace open coded variant of DEFINE_RES()
  resource: replace open coded variants of DEFINE_RES_*_NAMED()
  resource: replace open coded variant of DEFINE_RES_NAMED_DESC()
  resource: split DEFINE_RES_NAMED_DESC() out of DEFINE_RES_NAMED()
  samples: add hung_task detector mutex blocking sample
  hung_task: show the blocker task if the task is hung on mutex
  kexec_core: accept unaccepted kexec segments' destination addresses
  watchdog/perf: optimize bytes copied and remove manual NUL-termination
  lib/interval_tree: fix the comment of interval_tree_span_iter_next_gap()
  lib/interval_tree: skip the check before go to the right subtree
  lib/interval_tree: add test case for span iteration
  lib/interval_tree: add test case for interval_tree_iter_xxx() helpers
  lib/rbtree: add random seed
  lib/rbtree: split tests
  lib/rbtree: enable userland test suite for rbtree related data structure
  checkpatch: describe --min-conf-desc-length
  scripts/gdb/symbols: determine KASLR offset on s390
  ...
 2025-04-01 10:06:52 -07:00
Linus Torvalds
eb0ece1602 - The 6 patch series "Enable strict percpu address space checks" from 
Uros Bizjak uses x86 named address space qualifiers to provide
   compile-time checking of percpu area accesses.
 
   This has caused a small amount of fallout - two or three issues were
   reported.  In all cases the calling code was founf to be incorrect.
 
 - The 4 patch series "Some cleanup for memcg" from Chen Ridong
   implements some relatively monir cleanups for the memcontrol code.
 
 - The 17 patch series "mm: fixes for device-exclusive entries (hmm)"
   from David Hildenbrand fixes a boatload of issues which David found then
   using device-exclusive PTE entries when THP is enabled.  More work is
   needed, but this makes thins better - our own HMM selftests now succeed.
 
 - The 2 patch series "mm: zswap: remove z3fold and zbud" from Yosry
   Ahmed remove the z3fold and zbud implementations.  They have been
   deprecated for half a year and nobody has complained.
 
 - The 5 patch series "mm: further simplify VMA merge operation" from
   Lorenzo Stoakes implements numerous simplifications in this area.  No
   runtime effects are anticipated.
 
 - The 4 patch series "mm/madvise: remove redundant mmap_lock operations
   from process_madvise()" from SeongJae Park rationalizes the locking in
   the madvise() implementation.  Performance gains of 20-25% were observed
   in one MADV_DONTNEED microbenchmark.
 
 - The 12 patch series "Tiny cleanup and improvements about SWAP code"
   from Baoquan He contains a number of touchups to issues which Baoquan
   noticed when working on the swap code.
 
 - The 2 patch series "mm: kmemleak: Usability improvements" from Catalin
   Marinas implements a couple of improvements to the kmemleak user-visible
   output.
 
 - The 2 patch series "mm/damon/paddr: fix large folios access and
   schemes handling" from Usama Arif provides a couple of fixes for DAMON's
   handling of large folios.
 
 - The 3 patch series "mm/damon/core: fix wrong and/or useless
   damos_walk() behaviors" from SeongJae Park fixes a few issues with the
   accuracy of kdamond's walking of DAMON regions.
 
 - The 3 patch series "expose mapping wrprotect, fix fb_defio use" from
   Lorenzo Stoakes changes the interaction between framebuffer deferred-io
   and core MM.  No functional changes are anticipated - this is
   preparatory work for the future removal of page structure fields.
 
 - The 4 patch series "mm/damon: add support for hugepage_size DAMOS
   filter" from Usama Arif adds a DAMOS filter which permits the filtering
   by huge page sizes.
 
 - The 4 patch series "mm: permit guard regions for file-backed/shmem
   mappings" from Lorenzo Stoakes extends the guard region feature from its
   present "anon mappings only" state.  The feature now covers shmem and
   file-backed mappings.
 
 - The 4 patch series "mm: batched unmap lazyfree large folios during
   reclamation" from Barry Song cleans up and speeds up the unmapping for
   pte-mapped large folios.
 
 - The 18 patch series "reimplement per-vma lock as a refcount" from
   Suren Baghdasaryan puts the vm_lock back into the vma.  Our reasons for
   pulling it out were largely bogus and that change made the code more
   messy.  This patchset provides small (0-10%) improvements on one
   microbenchmark.
 
 - The 5 patch series "Docs/mm/damon: misc DAMOS filters documentation
   fixes and improves" from SeongJae Park does some maintenance work on the
   DAMON docs.
 
 - The 27 patch series "hugetlb/CMA improvements for large systems" from
   Frank van der Linden addresses a pile of issues which have been observed
   when using CMA on large machines.
 
 - The 2 patch series "mm/damon: introduce DAMOS filter type for unmapped
   pages" from SeongJae Park enables users of DMAON/DAMOS to filter my the
   page's mapped/unmapped status.
 
 - The 19 patch series "zsmalloc/zram: there be preemption" from Sergey
   Senozhatsky teaches zram to run its compression and decompression
   operations preemptibly.
 
 - The 12 patch series "selftests/mm: Some cleanups from trying to run
   them" from Brendan Jackman fixes a pile of unrelated issues which
   Brendan encountered while runnimg our selftests.
 
 - The 2 patch series "fs/proc/task_mmu: add guard region bit to pagemap"
   from Lorenzo Stoakes permits userspace to use /proc/pid/pagemap to
   determine whether a particular page is a guard page.
 
 - The 7 patch series "mm, swap: remove swap slot cache" from Kairui Song
   removes the swap slot cache from the allocation path - it simply wasn't
   being effective.
 
 - The 5 patch series "mm: cleanups for device-exclusive entries (hmm)"
   from David Hildenbrand implements a number of unrelated cleanups in this
   code.
 
 - The 5 patch series "mm: Rework generic PTDUMP configs" from Anshuman
   Khandual implements a number of preparatoty cleanups to the
   GENERIC_PTDUMP Kconfig logic.
 
 - The 8 patch series "mm/damon: auto-tune aggregation interval" from
   SeongJae Park implements a feedback-driven automatic tuning feature for
   DAMON's aggregation interval tuning.
 
 - The 5 patch series "Fix lazy mmu mode" from Ryan Roberts fixes some
   issues in powerpc, sparc and x86 lazy MMU implementations.  Ryan did
   this in preparation for implementing lazy mmu mode for arm64 to optimize
   vmalloc.
 
 - The 2 patch series "mm/page_alloc: Some clarifications for migratetype
   fallback" from Brendan Jackman reworks some commentary to make the code
   easier to follow.
 
 - The 3 patch series "page_counter cleanup and size reduction" from
   Shakeel Butt cleans up the page_counter code and fixes a size increase
   which we accidentally added late last year.
 
 - The 3 patch series "Add a command line option that enables control of
   how many threads should be used to allocate huge pages" from Thomas
   Prescher does that.  It allows the careful operator to significantly
   reduce boot time by tuning the parallalization of huge page
   initialization.
 
 - The 3 patch series "Fix calculations in trace_balance_dirty_pages()
   for cgwb" from Tang Yizhou fixes the tracing output from the dirty page
   balancing code.
 
 - The 9 patch series "mm/damon: make allow filters after reject filters
   useful and intuitive" from SeongJae Park improves the handling of allow
   and reject filters.  Behaviour is made more consistent and the
   documention is updated accordingly.
 
 - The 5 patch series "Switch zswap to object read/write APIs" from Yosry
   Ahmed updates zswap to the new object read/write APIs and thus permits
   the removal of some legacy code from zpool and zsmalloc.
 
 - The 6 patch series "Some trivial cleanups for shmem" from Baolin Wang
   does as it claims.
 
 - The 20 patch series "fs/dax: Fix ZONE_DEVICE page reference counts"
   from Alistair Popple regularizes the weird ZONE_DEVICE page refcount
   handling in DAX, permittig the removal of a number of special-case
   checks.
 
 - The 4 patch series "refactor mremap and fix bug" from Lorenzo Stoakes
   is a preparatoty refactoring and cleanup of the mremap() code.
 
 - The 20 patch series "mm: MM owner tracking for large folios (!hugetlb)
   + CONFIG_NO_PAGE_MAPCOUNT" from David Hildenbrand reworks the manner in
   which we determine whether a large folio is known to be mapped
   exclusively into a single MM.
 
 - The 8 patch series "mm/damon: add sysfs dirs for managing DAMOS
   filters based on handling layers" from SeongJae Park adds a couple of
   new sysfs directories to ease the management of DAMON/DAMOS filters.
 
 - The 13 patch series "arch, mm: reduce code duplication in mem_init()"
   from Mike Rapoport consolidates many per-arch implementations of
   mem_init() into code generic code, where that is practical.
 
 - The 13 patch series "mm/damon/sysfs: commit parameters online via
   damon_call()" from SeongJae Park continues the cleaning up of sysfs
   access to DAMON internal data.
 
 - The 3 patch series "mm: page_ext: Introduce new iteration API" from
   Luiz Capitulino reworks the page_ext initialization to fix a boot-time
   crash which was observed with an unusual combination of compile and
   cmdline options.
 
 - The 8 patch series "Buddy allocator like (or non-uniform) folio split"
   from Zi Yan reworks the code to split a folio into smaller folios.  The
   main benefit is lessened memory consumption: fewer post-split folios are
   generated.
 
 - The 2 patch series "Minimize xa_node allocation during xarry split"
   from Zi Yan reduces the number of xarray xa_nodes which are generated
   during an xarray split.
 
 - The 2 patch series "drivers/base/memory: Two cleanups" from Gavin Shan
   performs some maintenance work on the drivers/base/memory code.
 
 - The 3 patch series "Add tracepoints for lowmem reserves, watermarks
   and totalreserve_pages" from Martin Liu adds some more tracepoints to
   the page allocator code.
 
 - The 4 patch series "mm/madvise: cleanup requests validations and
   classifications" from SeongJae Park cleans up some warts which SeongJae
   observed during his earlier madvise work.
 
 - The 3 patch series "mm/hwpoison: Fix regressions in memory failure
   handling" from Shuai Xue addresses two quite serious regressions which
   Shuai has observed in the memory-failure implementation.
 
 - The 5 patch series "mm: reliable huge page allocator" from Johannes
   Weiner makes huge page allocations cheaper and more reliable by reducing
   fragmentation.
 
 - The 5 patch series "Minor memcg cleanups & prep for memdescs" from
   Matthew Wilcox is preparatory work for the future implementation of
   memdescs.
 
 - The 4 patch series "track memory used by balloon drivers" from Nico
   Pache introduces a way to track memory used by our various balloon
   drivers.
 
 - The 2 patch series "mm/damon: introduce DAMOS filter type for active
   pages" from Nhat Pham permits users to filter for active/inactive pages,
   separately for file and anon pages.
 
 - The 2 patch series "Adding Proactive Memory Reclaim Statistics" from
   Hao Jia separates the proactive reclaim statistics from the direct
   reclaim statistics.
 
 - The 2 patch series "mm/vmscan: don't try to reclaim hwpoison folio"
   from Jinjiang Tu fixes our handling of hwpoisoned pages within the
   reclaim code.
 -----BEGIN PGP SIGNATURE-----
 
 iHQEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZ+nZaAAKCRDdBJ7gKXxA
 jsOWAPiP4r7CJHMZRK4eyJOkvS1a1r+TsIarrFZtjwvf/GIfAQCEG+JDxVfUaUSF
 Ee93qSSLR1BkNdDw+931Pu0mXfbnBw==
 =Pn2K
 -----END PGP SIGNATURE-----

Merge tag 'mm-stable-2025-03-30-16-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:

 - The series "Enable strict percpu address space checks" from Uros
   Bizjak uses x86 named address space qualifiers to provide
   compile-time checking of percpu area accesses.

   This has caused a small amount of fallout - two or three issues were
   reported. In all cases the calling code was found to be incorrect.

 - The series "Some cleanup for memcg" from Chen Ridong implements some
   relatively monir cleanups for the memcontrol code.

 - The series "mm: fixes for device-exclusive entries (hmm)" from David
   Hildenbrand fixes a boatload of issues which David found then using
   device-exclusive PTE entries when THP is enabled. More work is
   needed, but this makes thins better - our own HMM selftests now
   succeed.

 - The series "mm: zswap: remove z3fold and zbud" from Yosry Ahmed
   remove the z3fold and zbud implementations. They have been deprecated
   for half a year and nobody has complained.

 - The series "mm: further simplify VMA merge operation" from Lorenzo
   Stoakes implements numerous simplifications in this area. No runtime
   effects are anticipated.

 - The series "mm/madvise: remove redundant mmap_lock operations from
   process_madvise()" from SeongJae Park rationalizes the locking in the
   madvise() implementation. Performance gains of 20-25% were observed
   in one MADV_DONTNEED microbenchmark.

 - The series "Tiny cleanup and improvements about SWAP code" from
   Baoquan He contains a number of touchups to issues which Baoquan
   noticed when working on the swap code.

 - The series "mm: kmemleak: Usability improvements" from Catalin
   Marinas implements a couple of improvements to the kmemleak
   user-visible output.

 - The series "mm/damon/paddr: fix large folios access and schemes
   handling" from Usama Arif provides a couple of fixes for DAMON's
   handling of large folios.

 - The series "mm/damon/core: fix wrong and/or useless damos_walk()
   behaviors" from SeongJae Park fixes a few issues with the accuracy of
   kdamond's walking of DAMON regions.

 - The series "expose mapping wrprotect, fix fb_defio use" from Lorenzo
   Stoakes changes the interaction between framebuffer deferred-io and
   core MM. No functional changes are anticipated - this is preparatory
   work for the future removal of page structure fields.

 - The series "mm/damon: add support for hugepage_size DAMOS filter"
   from Usama Arif adds a DAMOS filter which permits the filtering by
   huge page sizes.

 - The series "mm: permit guard regions for file-backed/shmem mappings"
   from Lorenzo Stoakes extends the guard region feature from its
   present "anon mappings only" state. The feature now covers shmem and
   file-backed mappings.

 - The series "mm: batched unmap lazyfree large folios during
   reclamation" from Barry Song cleans up and speeds up the unmapping
   for pte-mapped large folios.

 - The series "reimplement per-vma lock as a refcount" from Suren
   Baghdasaryan puts the vm_lock back into the vma. Our reasons for
   pulling it out were largely bogus and that change made the code more
   messy. This patchset provides small (0-10%) improvements on one
   microbenchmark.

 - The series "Docs/mm/damon: misc DAMOS filters documentation fixes and
   improves" from SeongJae Park does some maintenance work on the DAMON
   docs.

 - The series "hugetlb/CMA improvements for large systems" from Frank
   van der Linden addresses a pile of issues which have been observed
   when using CMA on large machines.

 - The series "mm/damon: introduce DAMOS filter type for unmapped pages"
   from SeongJae Park enables users of DMAON/DAMOS to filter my the
   page's mapped/unmapped status.

 - The series "zsmalloc/zram: there be preemption" from Sergey
   Senozhatsky teaches zram to run its compression and decompression
   operations preemptibly.

 - The series "selftests/mm: Some cleanups from trying to run them" from
   Brendan Jackman fixes a pile of unrelated issues which Brendan
   encountered while runnimg our selftests.

 - The series "fs/proc/task_mmu: add guard region bit to pagemap" from
   Lorenzo Stoakes permits userspace to use /proc/pid/pagemap to
   determine whether a particular page is a guard page.

 - The series "mm, swap: remove swap slot cache" from Kairui Song
   removes the swap slot cache from the allocation path - it simply
   wasn't being effective.

 - The series "mm: cleanups for device-exclusive entries (hmm)" from
   David Hildenbrand implements a number of unrelated cleanups in this
   code.

 - The series "mm: Rework generic PTDUMP configs" from Anshuman Khandual
   implements a number of preparatoty cleanups to the GENERIC_PTDUMP
   Kconfig logic.

 - The series "mm/damon: auto-tune aggregation interval" from SeongJae
   Park implements a feedback-driven automatic tuning feature for
   DAMON's aggregation interval tuning.

 - The series "Fix lazy mmu mode" from Ryan Roberts fixes some issues in
   powerpc, sparc and x86 lazy MMU implementations. Ryan did this in
   preparation for implementing lazy mmu mode for arm64 to optimize
   vmalloc.

 - The series "mm/page_alloc: Some clarifications for migratetype
   fallback" from Brendan Jackman reworks some commentary to make the
   code easier to follow.

 - The series "page_counter cleanup and size reduction" from Shakeel
   Butt cleans up the page_counter code and fixes a size increase which
   we accidentally added late last year.

 - The series "Add a command line option that enables control of how
   many threads should be used to allocate huge pages" from Thomas
   Prescher does that. It allows the careful operator to significantly
   reduce boot time by tuning the parallalization of huge page
   initialization.

 - The series "Fix calculations in trace_balance_dirty_pages() for cgwb"
   from Tang Yizhou fixes the tracing output from the dirty page
   balancing code.

 - The series "mm/damon: make allow filters after reject filters useful
   and intuitive" from SeongJae Park improves the handling of allow and
   reject filters. Behaviour is made more consistent and the documention
   is updated accordingly.

 - The series "Switch zswap to object read/write APIs" from Yosry Ahmed
   updates zswap to the new object read/write APIs and thus permits the
   removal of some legacy code from zpool and zsmalloc.

 - The series "Some trivial cleanups for shmem" from Baolin Wang does as
   it claims.

 - The series "fs/dax: Fix ZONE_DEVICE page reference counts" from
   Alistair Popple regularizes the weird ZONE_DEVICE page refcount
   handling in DAX, permittig the removal of a number of special-case
   checks.

 - The series "refactor mremap and fix bug" from Lorenzo Stoakes is a
   preparatoty refactoring and cleanup of the mremap() code.

 - The series "mm: MM owner tracking for large folios (!hugetlb) +
   CONFIG_NO_PAGE_MAPCOUNT" from David Hildenbrand reworks the manner in
   which we determine whether a large folio is known to be mapped
   exclusively into a single MM.

 - The series "mm/damon: add sysfs dirs for managing DAMOS filters based
   on handling layers" from SeongJae Park adds a couple of new sysfs
   directories to ease the management of DAMON/DAMOS filters.

 - The series "arch, mm: reduce code duplication in mem_init()" from
   Mike Rapoport consolidates many per-arch implementations of
   mem_init() into code generic code, where that is practical.

 - The series "mm/damon/sysfs: commit parameters online via
   damon_call()" from SeongJae Park continues the cleaning up of sysfs
   access to DAMON internal data.

 - The series "mm: page_ext: Introduce new iteration API" from Luiz
   Capitulino reworks the page_ext initialization to fix a boot-time
   crash which was observed with an unusual combination of compile and
   cmdline options.

 - The series "Buddy allocator like (or non-uniform) folio split" from
   Zi Yan reworks the code to split a folio into smaller folios. The
   main benefit is lessened memory consumption: fewer post-split folios
   are generated.

 - The series "Minimize xa_node allocation during xarry split" from Zi
   Yan reduces the number of xarray xa_nodes which are generated during
   an xarray split.

 - The series "drivers/base/memory: Two cleanups" from Gavin Shan
   performs some maintenance work on the drivers/base/memory code.

 - The series "Add tracepoints for lowmem reserves, watermarks and
   totalreserve_pages" from Martin Liu adds some more tracepoints to the
   page allocator code.

 - The series "mm/madvise: cleanup requests validations and
   classifications" from SeongJae Park cleans up some warts which
   SeongJae observed during his earlier madvise work.

 - The series "mm/hwpoison: Fix regressions in memory failure handling"
   from Shuai Xue addresses two quite serious regressions which Shuai
   has observed in the memory-failure implementation.

 - The series "mm: reliable huge page allocator" from Johannes Weiner
   makes huge page allocations cheaper and more reliable by reducing
   fragmentation.

 - The series "Minor memcg cleanups & prep for memdescs" from Matthew
   Wilcox is preparatory work for the future implementation of memdescs.

 - The series "track memory used by balloon drivers" from Nico Pache
   introduces a way to track memory used by our various balloon drivers.

 - The series "mm/damon: introduce DAMOS filter type for active pages"
   from Nhat Pham permits users to filter for active/inactive pages,
   separately for file and anon pages.

 - The series "Adding Proactive Memory Reclaim Statistics" from Hao Jia
   separates the proactive reclaim statistics from the direct reclaim
   statistics.

 - The series "mm/vmscan: don't try to reclaim hwpoison folio" from
   Jinjiang Tu fixes our handling of hwpoisoned pages within the reclaim
   code.

* tag 'mm-stable-2025-03-30-16-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (431 commits)
  mm/page_alloc: remove unnecessary __maybe_unused in order_to_pindex()
  x86/mm: restore early initialization of high_memory for 32-bits
  mm/vmscan: don't try to reclaim hwpoison folio
  mm/hwpoison: introduce folio_contain_hwpoisoned_page() helper
  cgroup: docs: add pswpin and pswpout items in cgroup v2 doc
  mm: vmscan: split proactive reclaim statistics from direct reclaim statistics
  selftests/mm: speed up split_huge_page_test
  selftests/mm: uffd-unit-tests support for hugepages > 2M
  docs/mm/damon/design: document active DAMOS filter type
  mm/damon: implement a new DAMOS filter type for active pages
  fs/dax: don't disassociate zero page entries
  MM documentation: add "Unaccepted" meminfo entry
  selftests/mm: add commentary about 9pfs bugs
  fork: use __vmalloc_node() for stack allocation
  docs/mm: Physical Memory: Populate the "Zones" section
  xen: balloon: update the NR_BALLOON_PAGES state
  hv_balloon: update the NR_BALLOON_PAGES state
  balloon_compaction: update the NR_BALLOON_PAGES state
  meminfo: add a per node counter for balloon drivers
  mm: remove references to folio in __memcg_kmem_uncharge_page()
  ...
 2025-04-01 09:29:18 -07:00
Linus Torvalds
08733088b5 Rust fixes for v6.15 merge 
Fix 'generate_rust_analyzer.py' due to typo during merge.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEPjU5OPd5QIZ9jqqOGXyLc2htIW0FAmfqiO4ACgkQGXyLc2ht
 IW2mFA/8CIsPSpZHn/Cf4fyZlDt67dGefro3DdDQGNTgfdt0bGi3slUy9KQA6uMD
 4U3E65AjW/Dkw2sUw6OTd0RyS0UHtk3fkoDqp+GCO6QbgsPIf6JXMH1cuY2t4EeT
 SAfO7j1K0EQoMpN4BT6C9BVbXInNFBvPSsV6iF6Xw2yBMGCPMelnzRkojsmpbZQ4
 yCK9gGdjswwayAzzc6eQe/3QOFIsjSPB9NLuWNw8rXmAsa+lfpGKCEBRiZ49n7kT
 BgPCnPv8loxHP1Xkj14k5+4qKvFYHzRIuo/FENGs2Ds5xtnIE8rN54c22ApH0Uqa
 irdhS8P2kTcVENvYCsl4cNzF95eGlcxpQe+LPYoyDDzWUqh/KSrDyMXCA9tNsgag
 XLPJQ1xblsIpFpshc3Edmc/cvQir1Du66NezjhGoo4Zu7DlpfC8U7TNLWXbedEnu
 VBy22XJOVPFeMdjoBr0XLAlbkZwwPjcxrlIAOKoWjzA+8xHo88CQPpgW6Dmy6lNM
 QgqRe+eVMVdh6S4VZH1XD9qDSw6nqGUHDhk6+/l37efIXaoxNF2sZ1bf8C+gseAB
 FzhTKvWxrumlwRL7yRGIt6udfIc85Idokldomw+GORMuRg98sVMpglzYz33AR5wJ
 28fHEJoxfCVLWNHnWtbQJcOGBt6ZVWq8qbCTy4rq19Nvxk4W8ow=
 =drkx
 -----END PGP SIGNATURE-----

Merge tag 'rust-fixes-6.15-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux

Pull Rust fix from Miguel Ojeda:
 "Fix 'generate_rust_analyzer.py' due to typo during merge"

Mea culpa, mea maxima culpa.

* tag 'rust-fixes-6.15-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux:
  scripts: generate_rust_analyzer: fix pin-init name in kernel deps
 2025-03-31 18:39:59 -07:00
Linus Torvalds
98fb679d19 bcachefs updates for 6.15, part 2 
All bugfixes and logging improvements.
 
 Minor merge conflict, see:
 https://lore.kernel.org/linux-next/20250331092816.778a7c83@canb.auug.org.au/T/#u
 
 CI says the fs-next tree is good:
 https://evilpiepirate.org/~testdashboard/ci?user=fs-next&branch=master
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEKnAFLkS8Qha+jvQrE6szbY3KbnYFAmfqyxsACgkQE6szbY3K
 bnY4aQ/7BylMgHZsAG2OLRRtegCsuFZ5fZt148TObofSGTTDPcVKYQWcz249Hlao
 RZzv9nbqq2M7fJrUK5Xloc4DA0ICuWIh9n+uRf+5od7JgtygjJpXqMRz9HrGBtTo
 QZJE/wAzsa1A8xBORjWVki4koHT3YivaMW2zdgbHIHWTjDJso5Es7RW0/WZYv3lW
 cFLFEfOnBCEXckhEtK7TAPnJpHEPw+/d0bMFU/PIHbokUwTjxCR0bmRL/RecKUXa
 5U1o1x7gAo1iPi3XPGLJVVxXWgjmxzQlF/3aXva+DYaeLgxPMqKxUlC6hkV4f6Oc
 9lH/w1pEiCMcANbbp2E3Q91sDFRlafFCgvsKhEz79W5WoNq+vSrxLhLaynyuBT/K
 lfoiig6IFRTWJDYHu2L6YHFMmp8JOxgJSJ0+dcgyVRnaDJQeGgbuv1tEldonQLsg
 9DT8iRJpVDomffwPUoVhujlvJOqUi8zFkxyMCgVWExFzC3ief2B5s3D4uLXcpApO
 nZfb01W0ElW7qBMQxjyD0Vy+wY8EryzTht9ZKJq5Id1T/LWc9Qi+jPaY86OBC9/w
 GJgW9OcYLFjYdsDokk5XkwOd/IAXz6fU+vHGtahFJPVfH4T8zzdBnxfPbiR2mXo8
 4EfeNmRevZP/oK7/2l2cqIzY7tYBJBUK1gFyvz1+7bcuFwVI8rc=
 =Udka
 -----END PGP SIGNATURE-----

Merge tag 'bcachefs-2025-03-31' of git://evilpiepirate.org/bcachefs

Pull more bcachefs updates from Kent Overstreet:
 "All bugfixes and logging improvements"

* tag 'bcachefs-2025-03-31' of git://evilpiepirate.org/bcachefs: (35 commits)
  bcachefs: fix bch2_write_point_to_text() units
  bcachefs: Log original key being moved in data updates
  bcachefs: BCH_JSET_ENTRY_log_bkey
  bcachefs: Reorder error messages that include journal debug
  bcachefs: Don't use designated initializers for disk_accounting_pos
  bcachefs: Silence errors after emergency shutdown
  bcachefs: fix units in rebalance_status
  bcachefs: bch2_ioctl_subvolume_destroy() fixes
  bcachefs: Clear fs_path_parent on subvolume unlink
  bcachefs: Change btree_insert_node() assertion to error
  bcachefs: Better printing of inconsistency errors
  bcachefs: bch2_count_fsck_err()
  bcachefs: Better helpers for inconsistency errors
  bcachefs: Consistent indentation of multiline fsck errors
  bcachefs: Add an "ignore unknown" option to bch2_parse_mount_opts()
  bcachefs: bch2_time_stats_init_no_pcpu()
  bcachefs: Fix bch2_fs_get_tree() error path
  bcachefs: fix logging in journal_entry_err_msg()
  bcachefs: add missing newline in bch2_trans_updates_to_text()
  bcachefs: print_string_as_lines: fix extra newline
  ...
 2025-03-31 18:33:51 -07:00
Linus Torvalds
4080cf02f1 \n 
-----BEGIN PGP SIGNATURE-----
 
 iQEzBAABCAAdFiEEq1nRK9aeMoq1VSgcnJ2qBz9kQNkFAmfqoncACgkQnJ2qBz9k
 QNkHTAgAt44H8tJ9gIFBdN5oB6ISx7TUDhz1kc+IcylmI6AZPaqDcJfLkI6r1q7A
 k0DfeTgSk3dbtxCdO67Xtit44uQLr1EXFgu2VFghCFhmeDTeYe0OvmNEFvgTpJto
 qI5DgcJDrV2LIl5Rh5Eto/Lgsw7+i/ovdcoG7pjVzVEHSt7FlKzeG9Qml7kHhMBs
 LegfOX4+sh7XgeFzB0nW0Wg5OuL0X7Iz0/IJqZyc7j0qabPzvehK/+VFlxOItweD
 NrJb+wveyMcDhYrGrt7cA+/MI+rEZxNxpTXL0LDTZZGU0eVeLBrUFMWBO/ju5vuL
 XX2OooLwmSXJBjSIcXZkiobI0kbIlg==
 =3hI9
 -----END PGP SIGNATURE-----

Merge tag 'fs_for_v6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

Pull ext2, udf, and isofs updates from Jan Kara:

 - conversion of ext2 to the new mount API

 - small folio conversion work for ext2

 - a fix of an unexpected return value in udf in inode_getblk()

 - a fix of handling of corrupted directory in isofs

* tag 'fs_for_v6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  udf: Fix inode_getblk() return value
  ext2: Make ext2_params_spec static
  ext2: create ext2_msg_fc for use during parsing
  ext2: convert to the new mount API
  ext2: Remove reference to bh->b_page
  isofs: fix KMSAN uninit-value bug in do_isofs_readdir()
 2025-03-31 17:53:44 -07:00
Linus Torvalds
172f7c9167 Description for this pull request: 
- Fix the random stack corruption and incorrect error returns in
    exfat_get_block().
  - Optimize exfat_get_block() by improving checking corner cases.
  - Fix an endless loop by self-linked chain in exfat_find_last_cluster.
  - Remove dead EXFAT_CLUSTERS_UNTRACKED codes.
  - Add missing shutdown check.
  - Improve the delete performance with discard mount option.
 -----BEGIN PGP SIGNATURE-----
 
 iQJKBAABCgA0FiEE6NzKS6Uv/XAAGHgyZwv7A1FEIQgFAmfqfYwWHGxpbmtpbmpl
 b25Aa2VybmVsLm9yZwAKCRBnC/sDUUQhCFfJEACwDwYHPc0RQpBmZgiZjLHSOdb3
 gjSB5t/KA7g26EIxdS3cAltbKk4P1TAQYZDj1RjGEn6BV16DD+QorPf5a7SFVi2f
 LFp/zDggs+BwpIMGQDZQPITlHFTmAueNjph0yFxGvN97zyx8dn1q2eyJvgwoWGnT
 I20xOqlIt85ujemE3g4u+6yJAr1Btz9cqxt7TfYwlJPgnFYDKoxBel8JnRvJhjvu
 PGwc4GGik9Hp/gS7Hki3peiYo51My0oWO+BSVvywgt/4ASGQ7rE03A0tjlYCIGBN
 I0W8gUU6o7WuHpINVJ4xAc0v2niQ4duw1gTx2AIl/p0CzEuAm86DRezcWkHQDW/3
 K8Fakzwj6pzwkqwUwhZCAIUBIISf+MOIx+nNO0C3CNtx0kSZhyMS4LGBGdEwWDSN
 pmXrPjNV+AXc5YAJsedwElq7DMmyx5IgzflB0DcrwCo7z8hlKe0tZtMU+Nx0GgSv
 aIMXOVNdYxlFFoxS85NPeLzKR9kdRUdY3fongNAOVz2mEyVv15BorLh6XOBIFOTL
 /ZwztbICbr702eZRA/0IjNTebIyqWewSJuLsOKSzIyGUGm6SV/xBFjDY4r6vyiur
 0WnVHZyp/Duty2LUOe0xtlrfWQJvHeNPYaGUROOXGmgEHWILY+2bCwVa9uLnCBIX
 fv+L1qEgZX8ccKF9NA==
 =uZA1
 -----END PGP SIGNATURE-----

Merge tag 'exfat-for-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat

Pull exfat updates from Namjae Jeon:

 - Fix random stack corruption and incorrect error returns in
   exfat_get_block()

 - Optimize exfat_get_block() by improving checking corner cases

 - Fix an endless loop by self-linked chain in exfat_find_last_cluster

 - Remove dead EXFAT_CLUSTERS_UNTRACKED codes

 - Add missing shutdown check

 - Improve the delete performance with discard mount option

* tag 'exfat-for-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat:
  exfat: call bh_read in get_block only when necessary
  exfat: fix potential wrong error return from get_block
  exfat: fix missing shutdown check
  exfat: fix the infinite loop in exfat_find_last_cluster()
  exfat: fix random stack corruption after get_block
  exfat: remove count used cluster from exfat_statfs()
  exfat: support batch discard of clusters when freeing clusters
 2025-03-31 17:49:35 -07:00
Linus Torvalds
f64a72bc76 10 ksmbd SMB3 server fixes 
-----BEGIN PGP SIGNATURE-----
 
 iQGzBAABCgAdFiEE6fsu8pdIjtWE/DpLiiy9cAdyT1EFAmfqzKsACgkQiiy9cAdy
 T1FkKwv/egMHhOwxfps+5vaEV9Ex1SNrmrJBPlbYJcdflGgZGyFLeELWeYBqSJfZ
 Jxx07LgQkub/whlG8Do78HoCSKNRMbZiPYaNjuAIISgEnqQ06WSQfTc6/LUH3GW2
 nNSAk7VHFu3Z7UJf52ztjE02a3XSz2TAds7FwTqqOzMygbN9u558UoX+qp5FGl4E
 9CIsaCOQE4LwktP+v+U/P0jIzbKILh4penDBq+lQOudJPGBo3scCg4sdEOJXnX4y
 XbsfuUkoCzaNuw4AMkU+E8Elw9ki0yRGxKquZnNqctJgpYtGPdEPj0HvMpGqcJw0
 6jwuJCFqw1MUiMZzxVVM1ALngtW//AXwL5C/UUkL81PlZtmxnP/8J+AT9CzkiLnJ
 KAGKRPmDtUSzsSL237dALgekcPUBUdXeAnJfLRmlLH4OD61yuLKEzhh+MCeJXnwm
 qu+03AA0z7+s4S8QUmHQBFzhjTQJ5BrORz3XYPVQHx59Ab2+p+ZiOOwUzWLtDSmO
 lLFGE41T
 =sLet
 -----END PGP SIGNATURE-----

Merge tag 'v6.15rc-part1-ksmbd-server-fixes' of git://git.samba.org/ksmbd

Pull smb server updates from Steve French:

 - Two fixes for bounds checks of open contexts

 - Two multichannel fixes, including one for important UAF

 - Oplock/lease break fix for potential ksmbd connection refcount leak

 - Security fix to free crypto data more securely

 - Fix to enable allowing Kerberos authentication by default

 - Two RDMA/smbdirect fixes

 - Minor cleanup

* tag 'v6.15rc-part1-ksmbd-server-fixes' of git://git.samba.org/ksmbd:
  ksmbd: fix r_count dec/increment mismatch
  ksmbd: fix multichannel connection failure
  ksmbd: fix use-after-free in ksmbd_sessions_deregister()
  ksmbd: use ib_device_get_netdev() instead of calling ops.get_netdev
  ksmbd: use aead_request_free to match aead_request_alloc
  Revert "ksmbd: fix missing RDMA-capable flag for IPoIB device in ksmbd_rdma_capable_netdev()"
  ksmbd: add bounds check for create lease context
  ksmbd: add bounds check for durable handle context
  ksmbd: make SMB_SERVER_KERBEROS5 enable by default
  ksmbd: Use str_read_write() and str_true_false() helpers
 2025-03-31 17:42:26 -07:00
Linus Torvalds
8b175e2e18 14 smb3/cifs client fixes and minor update to maintainers file 
-----BEGIN PGP SIGNATURE-----
 
 iQGzBAABCgAdFiEE6fsu8pdIjtWE/DpLiiy9cAdyT1EFAmfpzSUACgkQiiy9cAdy
 T1GTHQwAhjeBIlGw2kaJDHBn32BDSpmw7r4D6gGUU+cv4sL4O2flRaDmshpGvO3r
 vgUxI8VFwLRvPem7QHr9aseFBIu6jQwWzI2tgkq+XW4LeyRtcgWff8dT8bQPc3b9
 t/z1wAqZhlr8MY5mma+aHjWsdRZNYzMWNFSWURpDylqhhNFxUbl/u24RF08VG+It
 bqBi+RyNIX2u0jHAuSUKUW0xFImp+YSEqg/TqYw10vZ4ChtfYtCX5YcbQNHls2XE
 IA7p0uOfFLrLmTmmw95A8rLtDlREb9rLcD2bLeBR2qFGnbrZFvCg917S0WchTU58
 P2UnKAZJqEhnMBefuXZ/LGKju5bnLAV6YGl/lKPf53UE71C9r5zBID3YgeweKiYS
 aWEjlY/FeC/Gb7iniRDBWE2BCaI6Sp7y/CmLucy58xrGhpPoXlliDj2FRCWWAFi4
 zk2rCempLa+uiIbIQReLclWbxA/ysqMJLwbtEKGa/le45LdtxAKkiTNLJ3MQciwd
 s6+i344q
 =Mjh/
 -----END PGP SIGNATURE-----

Merge tag '6.15-rc-part1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull smb client updates from Steve French:

 - Fix for network namespace refcount leak

 - Multichannel fix and minor multichannel debug message cleanup

 - Fix potential null ptr reference in SMB3 close

 - Fix for special file handling when reparse points not supported by
   server

 - Two ACL fixes one for stricter ACE validation, one for incorrect
   perms requested

 - Three RFC1001 fixes: one for SMB3 mounts on port 139, one for better
   default hostname, and one for better session response processing

 - Minor update to email address for MAINTAINERS file

 - Allow disabling Unicode for access to old SMB1 servers

 - Three minor cleanups

* tag '6.15-rc-part1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: Add new mount option -o nounicode to disable SMB1 UNICODE mode
  cifs: Set default Netbios RFC1001 server name to hostname in UNC
  smb: client: Fix netns refcount imbalance causing leaks and use-after-free
  cifs: add validation check for the fields in smb_aces
  CIFS: Propagate min offload along with other parameters from primary to secondary channels.
  cifs: Improve establishing SMB connection with NetBIOS session
  cifs: Fix establishing NetBIOS session for SMB2+ connection
  cifs: Fix getting DACL-only xattr system.cifs_acl and system.smb3_acl
  cifs: Check if server supports reparse points before using them
  MAINTAINERS: reorder preferred email for Steve French
  cifs: avoid NULL pointer dereference in dbg call
  smb: client: Remove redundant check in smb2_is_path_accessible()
  smb: client: Remove redundant check in cifs_oplock_break()
  smb: mark the new channel addition log as informational log with cifs_info
  smb: minor cleanup to remove unused function declaration
 2025-03-31 17:38:34 -07:00
Linus Torvalds
b6dde1e527 NFSD 6.15 Release Notes 
Neil Brown contributed more scalability improvements to NFSD's
 open file cache, and Jeff Layton contributed a menagerie of
 repairs to NFSD's NFSv4 callback / backchannel implementation.
 
 Mike Snitzer contributed a change to NFS re-export support that
 disables support for file locking on a re-exported NFSv4 mount.
 This is because NFSv4 state recovery is currently difficult if
 not impossible for re-exported NFS mounts. The change aims to
 prevent data integrity exposures after the re-export server
 crashes.
 
 Work continues on the evolving NFSD netlink administrative API.
 
 Many thanks to the contributors, reviewers, testers, and bug
 reporters who participated during the v6.15 development cycle.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEEKLLlsBKG3yQ88j7+M2qzM29mf5cFAmfmpMIACgkQM2qzM29m
 f5f6DA/+P0YqoRg3Zk/4oWwXZWbfEOMhWFltT+D1PE2QjUfOZpiwUSFQfsfYgXO6
 OFu0iDQ4g8BxBeP6Umv61qy7Cv6n4fVzIHqzymXQvymh9JzoQiXlE9/fA8nAHuiH
 u7kkNPRi7faBz1sMg/WpN9CHctg7STPOhhG/JrZcSFZnh87mU1i4i4bZBNz8tVnK
 ZWf483OUuSmJY2/bUTkwvr4GbceTKBlLWFFjiRhfAKvJBWvu4myfC0DI5QzxmsgI
 MJ62do7AFJP1ww2Ih9LLi2kFIt/yyInSVAgyts1CPhlJ4BfPnTSOw/i2+CuF3D/M
 bZYEAOjH3AqjBZmq58sIQezpD5f9/TOrTSwYwS31zl/THYE413WiW80/MDoWqo0y
 9cSNkD3nJlPVLLCfF58vXLoe7wpLoN/ZbTdxoozzUWEFR5A4Jz3XP8F/Cws0cjem
 uWWAQMItiQpg1+RYJYfu4dg5+iN6dbgYbvzlr7buISwFNXi3Zo99MkJ4wHj9TJbL
 Tpjth1rWGPwwSOMT6ojKiYMq1oUzx5PuAm9Saq9oIzQAbBySmxHF/LSDz3wEuBoO
 MK1jzKroEmMk3fJOOAajSDLOdAbL3vfj6H/xi2IHvKnaz9yHCZNu2YGV05BBMprd
 hWePf69AO5Ky5Q9KuGClEtwvJ9ZR5pb4DO2dqaYu8ximu3O4vPo=
 =e2E2
 -----END PGP SIGNATURE-----

Merge tag 'nfsd-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

Pull nfsd updates from Chuck Lever:
 "Neil Brown contributed more scalability improvements to NFSD's open
  file cache, and Jeff Layton contributed a menagerie of repairs to
  NFSD's NFSv4 callback / backchannel implementation.

  Mike Snitzer contributed a change to NFS re-export support that
  disables support for file locking on a re-exported NFSv4 mount. This
  is because NFSv4 state recovery is currently difficult if not
  impossible for re-exported NFS mounts. The change aims to prevent data
  integrity exposures after the re-export server crashes.

  Work continues on the evolving NFSD netlink administrative API.

  Many thanks to the contributors, reviewers, testers, and bug reporters
  who participated during the v6.15 development cycle"

* tag 'nfsd-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (45 commits)
  NFSD: Add a Kconfig setting to enable delegated timestamps
  sysctl: Fixes nsm_local_state bounds
  nfsd: use a long for the count in nfsd4_state_shrinker_count()
  nfsd: remove obsolete comment from nfs4_alloc_stid
  nfsd: remove unneeded forward declaration of nfsd4_mark_cb_fault()
  nfsd: reorganize struct nfs4_delegation for better packing
  nfsd: handle errors from rpc_call_async()
  nfsd: move cb_need_restart flag into cb_flags
  nfsd: replace CB_GETATTR_BUSY with NFSD4_CALLBACK_RUNNING
  nfsd: eliminate cl_ra_cblist and NFSD4_CLIENT_CB_RECALL_ANY
  nfsd: prevent callback tasks running concurrently
  nfsd: disallow file locking and delegations for NFSv4 reexport
  nfsd: filecache: drop the list_lru lock during lock gc scans
  nfsd: filecache: don't repeatedly add/remove files on the lru list
  nfsd: filecache: introduce NFSD_FILE_RECENT
  nfsd: filecache: use list_lru_walk_node() in nfsd_file_gc()
  nfsd: filecache: use nfsd_file_dispose_list() in nfsd_file_close_inode_sync()
  NFSD: Re-organize nfsd_file_gc_worker()
  nfsd: filecache: remove race handling.
  fs: nfs: acl: Avoid -Wflex-array-member-not-at-end warning
  ...
 2025-03-31 17:28:17 -07:00
Linus Torvalds
1e7857b280 x86: don't re-generate cpufeaturemasks.h so eagerly 
It turns out the code to generate the x86 cpufeaturemasks.h header was
way too aggressive, and would re-generate it whenever the timestamp on
the kernel config file changed.

Now, the regular 'make *config' tools are fairly careful to not rewrite
the kernel config file unless the contents change, but other usecases
aren't that careful.

Michael Kelley reports that 'make-kpkg' ends up doing "make syncconfig"
multiple times in prepping to build, and will modify the config file in
the process (and then modify it back, but by then the timestamps have
changed).

Jakub Kicinski reports that the netdev CI does something similar in how
it generates the config file in multiple steps.

In both cases, the config file timestamp updates then cause the
cpufeaturemasks.h file to be regenerated, and that in turn then causes
lots of unnecessary rebuilds due to all the normal dependencies.

Fix it by using our 'filechk' infrastructure in the Makefile to generate
the header file.  That will only write a new version of the file if the
contents of the file have actually changed.

Fixes: 841326332bcb ("x86/cpufeatures: Generate the <asm/cpufeaturemasks.h> header based on build config")
Reported-by: Michael Kelley <mhklinux@outlook.com>
Reported-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/all/SN6PR02MB415756D1829740F6E8AC11D1D4D82@SN6PR02MB4157.namprd02.prod.outlook.com/
Link: https://lore.kernel.org/all/20250328162311.08134fa6@kernel.org/
Cc: Peter Anvin <hpa@zytor.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2025-03-31 14:19:55 -07:00
Linus Torvalds
46d29f23a7 ring-buffer updates for v6.15 
- Restructure the persistent memory to have a "scratch" area
 
   Instead of hard coding the KASLR offset in the persistent memory
   by the ring buffer, push that work up to the callers of the persistent
   memory as they are the ones that need this information. The offsets
   and such is not important to the ring buffer logic and it should
   not be part of that.
 
   A scratch pad is now created when the caller allocates a ring buffer
   from persistent memory by stating how much memory it needs to save.
 
 - Allow where modules are loaded to be saved in the new scratch pad
 
   Save the addresses of modules when they are loaded into the persistent
   memory scratch pad.
 
 - A new module_for_each_mod() helper function was created
 
   With the acknowledgement of the module maintainers a new module helper
   function was created to iterate over all the currently loaded modules.
   This has a callback to be called for each module. This is needed for
   when tracing is started in the persistent buffer and the currently loaded
   modules need to be saved in the scratch area.
 
 - Expose the last boot information where the kernel and modules were loaded
 
   The last_boot_info file is updated to print out the addresses of where
   the kernel "_text" location was loaded from a previous boot, as well
   as where the modules are loaded. If the buffer is recording the current
   boot, it only prints "# Current" so that it does not expose the KASLR
   offset of the currently running kernel.
 
 - Allow the persistent ring buffer to be released (freed)
 
   To have this in production environments, where the kernel command line can
   not be changed easily, the ring buffer needs to be freed when it is not
   going to be used. The memory for the buffer will always be allocated at
   boot up, but if the system isn't going to enable tracing, the memory needs
   to be freed. Allow it to be freed and added back to the kernel memory
   pool.
 
 - Allow stack traces to print the function names in the persistent buffer
 
   Now that the modules are saved in the persistent ring buffer, if the same
   modules are loaded, the printing of the function names will examine the
   saved modules. If the module is found in the scratch area and is also
   loaded, then it will do the offset shift and use kallsyms to display the
   function name. If the address is not found, it simply displays the address
   from the previous boot in hex.
 -----BEGIN PGP SIGNATURE-----
 
 iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCZ+cUERQccm9zdGVkdEBn
 b29kbWlzLm9yZwAKCRAp5XQQmuv6qrAsAQCFt2nfzxoe3wtF5EqIT1VHp/8bQVjG
 gBe8B6ouboreogD/dS7yK8MRy24ZAmObGwYG0RbVicd50S7P8Rf7+823ng8=
 =OJKk
 -----END PGP SIGNATURE-----

Merge tag 'trace-ringbuffer-v6.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull ring-buffer updates from Steven Rostedt:

 - Restructure the persistent memory to have a "scratch" area

   Instead of hard coding the KASLR offset in the persistent memory by
   the ring buffer, push that work up to the callers of the persistent
   memory as they are the ones that need this information. The offsets
   and such is not important to the ring buffer logic and it should not
   be part of that.

   A scratch pad is now created when the caller allocates a ring buffer
   from persistent memory by stating how much memory it needs to save.

 - Allow where modules are loaded to be saved in the new scratch pad

   Save the addresses of modules when they are loaded into the
   persistent memory scratch pad.

 - A new module_for_each_mod() helper function was created

   With the acknowledgement of the module maintainers a new module
   helper function was created to iterate over all the currently loaded
   modules. This has a callback to be called for each module. This is
   needed for when tracing is started in the persistent buffer and the
   currently loaded modules need to be saved in the scratch area.

 - Expose the last boot information where the kernel and modules were
   loaded

   The last_boot_info file is updated to print out the addresses of
   where the kernel "_text" location was loaded from a previous boot, as
   well as where the modules are loaded. If the buffer is recording the
   current boot, it only prints "# Current" so that it does not expose
   the KASLR offset of the currently running kernel.

 - Allow the persistent ring buffer to be released (freed)

   To have this in production environments, where the kernel command
   line can not be changed easily, the ring buffer needs to be freed
   when it is not going to be used. The memory for the buffer will
   always be allocated at boot up, but if the system isn't going to
   enable tracing, the memory needs to be freed. Allow it to be freed
   and added back to the kernel memory pool.

 - Allow stack traces to print the function names in the persistent
   buffer

   Now that the modules are saved in the persistent ring buffer, if the
   same modules are loaded, the printing of the function names will
   examine the saved modules. If the module is found in the scratch area
   and is also loaded, then it will do the offset shift and use kallsyms
   to display the function name. If the address is not found, it simply
   displays the address from the previous boot in hex.

* tag 'trace-ringbuffer-v6.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  tracing: Use _text and the kernel offset in last_boot_info
  tracing: Show last module text symbols in the stacktrace
  ring-buffer: Remove the unused variable bmeta
  tracing: Skip update_last_data() if cleared and remove active check for save_mod()
  tracing: Initialize scratch_size to zero to prevent UB
  tracing: Fix a compilation error without CONFIG_MODULES
  tracing: Freeable reserved ring buffer
  mm/memblock: Add reserved memory release function
  tracing: Update modules to persistent instances when loaded
  tracing: Show module names and addresses of last boot
  tracing: Have persistent trace instances save module addresses
  module: Add module_for_each_mod() function
  tracing: Have persistent trace instances save KASLR offset
  ring-buffer: Add ring_buffer_meta_scratch()
  ring-buffer: Add buffer meta data for persistent ring buffer
  ring-buffer: Use kaslr address instead of text delta
  ring-buffer: Fix bytes_dropped calculation issue
 2025-03-31 13:37:22 -07:00
Linus Torvalds
609706855d Documentation fix for runtime verifier 
The runtime verifier documents that were created were not referenced
 in the indices, which caused warning when building the documentation
 tree. Those documents are now added to the rv indices.
 -----BEGIN PGP SIGNATURE-----
 
 iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCZ+cRdhQccm9zdGVkdEBn
 b29kbWlzLm9yZwAKCRAp5XQQmuv6qhc3AQCm6C+HJZl28AT7jlFLBwUzgzHJdkQp
 hAVp0o6heMjRCwD/QAKUDKaTOeqmmvmP/u2CF/e/IFypBDauwsA3bhiKKA8=
 =2HEf
 -----END PGP SIGNATURE-----

Merge tag 'trace-latency-v6.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull tracing documentation fix from Steven Rostedt:
 "Documentation fix for runtime verifier

  The runtime verifier documents that were created were not referenced
  in the indices, which caused warning when building the documentation
  tree. Those documents are now added to the rv indices"

* tag 'trace-latency-v6.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  Documentation/rv: Add sched pages to the indices
 2025-03-31 09:56:08 -07:00
Linus Torvalds
802f0d58d5 perf tools changes for v6.15 
perf record
 -----------
 * Introduce latency profiling using scheduler information.  The latency
   profiling is to show impacts on wall-time rather than cpu-time.  By
   tracking context switches, it can weight samples and find which part
   of the code contributed more to the execution latency.
 
   The value (period) of the sample is weighted by dividing it by the
   number of parallel execution at the moment.  The parallelism is
   tracked in perf report with sched-switch records.  This will reduce
   the portion that are run in parallel and in turn increase the portion
   of serial executions.
 
   For now, it's limited to profile processes, IOW system-wide profiling
   is not supported.  You can add --latency option to enable this.
 
     $ perf record --latency -- make -C tools/perf
 
   I've run the above command for perf build which adds -j option to
   make with the number of CPUs in the system internally.  Normally
   it'd show something like below:
 
     $ perf report -F overhead,comm
     ...
     #
     # Overhead  Command
     # ........  ...............
     #
         78.97%  cc1
          6.54%  python3
          4.21%  shellcheck
          3.28%  ld
          1.80%  as
          1.37%  cc1plus
          0.80%  sh
          0.62%  clang
          0.56%  gcc
          0.44%  perl
          0.39%  make
 	 ...
 
   The cc1 takes around 80% of the overhead as it's the actual compiler.
   However it runs in parallel so its contribution to latency may be less
   than that.  Now, perf report will show both overhead and latency (if
   --latency was given at record time) like below:
 
     $ perf report -s comm
     ...
     #
     # Overhead   Latency  Command
     # ........  ........  ...............
     #
         78.97%    48.66%  cc1
          6.54%    25.68%  python3
          4.21%     0.39%  shellcheck
          3.28%    13.70%  ld
          1.80%     2.56%  as
          1.37%     3.08%  cc1plus
          0.80%     0.98%  sh
          0.62%     0.61%  clang
          0.56%     0.33%  gcc
          0.44%     1.71%  perl
          0.39%     0.83%  make
 	 ...
 
   You can see latency of cc1 goes down to around 50% and python3 and ld
   contribute a lot more than their overhead.  You can use --latency
   option in perf report to get the same result but ordered by latency.
 
     $ perf report --latency -s comm
 
 perf report
 -----------
 * As a side effect of the latency profiling work, it adds a new output
   field 'latency' and a sort key 'parallelism'.  The below is a result
   from my system with 64 CPUs.  The build was well-parallelized but
   contained some serial portions.
 
     $ perf report -s parallelism
     ...
     #
     # Overhead   Latency  Parallelism
     # ........  ........  ...........
     #
         16.95%     1.54%           62
         13.38%     1.24%           61
         12.50%    70.47%            1
         11.81%     1.06%           63
          7.59%     0.71%           60
          4.33%    12.20%            2
          3.41%     0.33%           59
          2.05%     0.18%           64
          1.75%     1.09%            9
          1.64%     1.85%            5
          ...
 
 * Support Feodra mini-debuginfo which is a LZMA compressed symbol table
   inside ".gnu_debugdata" ELF section.
 
 perf annotate
 -------------
 * Add --code-with-type option to enable data-type profiling with the
   usual annotate output.  Instead of focusing on data structure, it
   shows code annotation together with data type it accesses in case the
   instruction refers to a memory location (and it was able to resolve
   the target data type).  Currently it only works with --stdio.
 
     $ perf annotate --stdio --code-with-type
     ...
      Percent |      Source code & Disassembly of vmlinux for cpu/mem-loads,ldlat=30/pp (18 samples, percent: local period)
     ----------------------------------------------------------------------------------------------------------------------
              : 0                0xffffffff81050610 <__fdget>:
         0.00 :   ffffffff81050610:        callq   0xffffffff81c01b80 <__fentry__>           # data-type: (stack operation)
         0.00 :   ffffffff81050615:        pushq   %rbp              # data-type: (stack operation)
         0.00 :   ffffffff81050616:        movq    %rsp, %rbp
         0.00 :   ffffffff81050619:        pushq   %r15              # data-type: (stack operation)
         0.00 :   ffffffff8105061b:        pushq   %r14              # data-type: (stack operation)
         0.00 :   ffffffff8105061d:        pushq   %rbx              # data-type: (stack operation)
         0.00 :   ffffffff8105061e:        subq    $0x10, %rsp
         0.00 :   ffffffff81050622:        movl    %edi, %ebx
         0.00 :   ffffffff81050624:        movq    %gs:0x7efc4814(%rip), %rax  # 0x14e40 <current_task>              # data-type: struct task_struct* +0
         0.00 :   ffffffff8105062c:        movq    0x8d0(%rax), %r14         # data-type: struct task_struct +0x8d0 (files)
         0.00 :   ffffffff81050633:        movl    (%r14), %eax              # data-type: struct files_struct +0 (count.counter)
         0.00 :   ffffffff81050636:        cmpl    $0x1, %eax
         0.00 :   ffffffff81050639:        je      0xffffffff810506a9 <__fdget+0x99>
         0.00 :   ffffffff8105063b:        movq    0x20(%r14), %rcx          # data-type: struct files_struct +0x20 (fdt)
         0.00 :   ffffffff8105063f:        movl    (%rcx), %eax              # data-type: struct fdtable +0 (max_fds)
         0.00 :   ffffffff81050641:        cmpl    %ebx, %eax
         0.00 :   ffffffff81050643:        jbe     0xffffffff810506ef <__fdget+0xdf>
         0.00 :   ffffffff81050649:        movl    %ebx, %r15d
         5.56 :   ffffffff8105064c:        movq    0x8(%rcx), %rdx           # data-type: struct fdtable +0x8 (fd)
 	...
 
   The "# data-type:" part was added with this change.  The first few
   entries are not very interesting.  But later you can it accesses
   a couple of fields in the task_struct, files_struct and fdtable.
 
 perf trace
 ----------
 * Support syscall tracing for different ABI.  For example it can trace
   system calls for 32-bit applications on 64-bit kernel transparently.
 
 * Add --summary-mode=total option to show global syscall summary.  The
   default is 'thread' to show per-thread syscall summary.
 
 Python support
 --------------
 * Add more interfaces to 'perf' module to parse events, and config,
   enable or disable the event list properly so that it can implement
   basic functionalities purely in Python.  There is an example code
   for these new interfaces in python/tracepoint.py.
 
 * Add mypy and pylint support to enable build time checking.  Fix
   some code based on the findings from these tools.
 
 Internals
 ---------
 * Introduce io_dir__readdir() API to make directory traveral (usually
   for proc or sysfs) efficient with less memory footprint.
 
 JSON vendor events
 ------------------
 * Add events and metrics for ARM Neoverse N3 and V3
 * Update events and metrics on various Intel CPUs
 * Add/update events for a number of SiFive processors
 
 Signed-off-by: Namhyung Kim <namhyung@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYIAB0WIQSo2x5BnqMqsoHtzsmMstVUGiXMgwUCZ+Y/YQAKCRCMstVUGiXM
 g64CAP9sdUgKCe66JilZRAEy9d3Cp835v7KjHSlCXLXkRSoy6wD+KH96Y0OqVtGw
 GYON4s9ZoXAoH+J0lKIFSffVL9MhYgY=
 =7L7B
 -----END PGP SIGNATURE-----

Merge tag 'perf-tools-for-v6.15-2025-03-27' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools

Pull perf tools updates from Namhyung Kim:
 "perf record:

   - Introduce latency profiling using scheduler information.

     The latency profiling is to show impacts on wall-time rather than
     cpu-time. By tracking context switches, it can weight samples and
     find which part of the code contributed more to the execution
     latency.

     The value (period) of the sample is weighted by dividing it by the
     number of parallel execution at the moment. The parallelism is
     tracked in perf report with sched-switch records. This will reduce
     the portion that are run in parallel and in turn increase the
     portion of serial executions.

     For now, it's limited to profile processes, IOW system-wide
     profiling is not supported. You can add --latency option to enable
     this.

       $ perf record --latency -- make -C tools/perf

     I've run the above command for perf build which adds -j option to
     make with the number of CPUs in the system internally. Normally
     it'd show something like below:

       $ perf report -F overhead,comm
       ...
       #
       # Overhead  Command
       # ........  ...............
       #
           78.97%  cc1
            6.54%  python3
            4.21%  shellcheck
            3.28%  ld
            1.80%  as
            1.37%  cc1plus
            0.80%  sh
            0.62%  clang
            0.56%  gcc
            0.44%  perl
            0.39%  make
  	 ...

     The cc1 takes around 80% of the overhead as it's the actual
     compiler. However it runs in parallel so its contribution to
     latency may be less than that. Now, perf report will show both
     overhead and latency (if --latency was given at record time) like
     below:

       $ perf report -s comm
       ...
       #
       # Overhead   Latency  Command
       # ........  ........  ...............
       #
           78.97%    48.66%  cc1
            6.54%    25.68%  python3
            4.21%     0.39%  shellcheck
            3.28%    13.70%  ld
            1.80%     2.56%  as
            1.37%     3.08%  cc1plus
            0.80%     0.98%  sh
            0.62%     0.61%  clang
            0.56%     0.33%  gcc
            0.44%     1.71%  perl
            0.39%     0.83%  make
  	 ...

     You can see latency of cc1 goes down to around 50% and python3 and
     ld contribute a lot more than their overhead. You can use --latency
     option in perf report to get the same result but ordered by
     latency.

       $ perf report --latency -s comm

  perf report:

   - As a side effect of the latency profiling work, it adds a new
     output field 'latency' and a sort key 'parallelism'. The below is a
     result from my system with 64 CPUs. The build was well-parallelized
     but contained some serial portions.

       $ perf report -s parallelism
       ...
       #
       # Overhead   Latency  Parallelism
       # ........  ........  ...........
       #
           16.95%     1.54%           62
           13.38%     1.24%           61
           12.50%    70.47%            1
           11.81%     1.06%           63
            7.59%     0.71%           60
            4.33%    12.20%            2
            3.41%     0.33%           59
            2.05%     0.18%           64
            1.75%     1.09%            9
            1.64%     1.85%            5
            ...

   - Support Feodra mini-debuginfo which is a LZMA compressed symbol
     table inside ".gnu_debugdata" ELF section.

  perf annotate:

   - Add --code-with-type option to enable data-type profiling with the
     usual annotate output.

     Instead of focusing on data structure, it shows code annotation
     together with data type it accesses in case the instruction refers
     to a memory location (and it was able to resolve the target data
     type). Currently it only works with --stdio.

       $ perf annotate --stdio --code-with-type
       ...
        Percent |      Source code & Disassembly of vmlinux for cpu/mem-loads,ldlat=30/pp (18 samples, percent: local period)
       ----------------------------------------------------------------------------------------------------------------------
                : 0                0xffffffff81050610 <__fdget>:
           0.00 :   ffffffff81050610:        callq   0xffffffff81c01b80 <__fentry__>           # data-type: (stack operation)
           0.00 :   ffffffff81050615:        pushq   %rbp              # data-type: (stack operation)
           0.00 :   ffffffff81050616:        movq    %rsp, %rbp
           0.00 :   ffffffff81050619:        pushq   %r15              # data-type: (stack operation)
           0.00 :   ffffffff8105061b:        pushq   %r14              # data-type: (stack operation)
           0.00 :   ffffffff8105061d:        pushq   %rbx              # data-type: (stack operation)
           0.00 :   ffffffff8105061e:        subq    $0x10, %rsp
           0.00 :   ffffffff81050622:        movl    %edi, %ebx
           0.00 :   ffffffff81050624:        movq    %gs:0x7efc4814(%rip), %rax  # 0x14e40 <current_task>              # data-type: struct task_struct* +0
           0.00 :   ffffffff8105062c:        movq    0x8d0(%rax), %r14         # data-type: struct task_struct +0x8d0 (files)
           0.00 :   ffffffff81050633:        movl    (%r14), %eax              # data-type: struct files_struct +0 (count.counter)
           0.00 :   ffffffff81050636:        cmpl    $0x1, %eax
           0.00 :   ffffffff81050639:        je      0xffffffff810506a9 <__fdget+0x99>
           0.00 :   ffffffff8105063b:        movq    0x20(%r14), %rcx          # data-type: struct files_struct +0x20 (fdt)
           0.00 :   ffffffff8105063f:        movl    (%rcx), %eax              # data-type: struct fdtable +0 (max_fds)
           0.00 :   ffffffff81050641:        cmpl    %ebx, %eax
           0.00 :   ffffffff81050643:        jbe     0xffffffff810506ef <__fdget+0xdf>
           0.00 :   ffffffff81050649:        movl    %ebx, %r15d
           5.56 :   ffffffff8105064c:        movq    0x8(%rcx), %rdx           # data-type: struct fdtable +0x8 (fd)
  	...

     The "# data-type:" part was added with this change. The first few
     entries are not very interesting. But later you can it accesses a
     couple of fields in the task_struct, files_struct and fdtable.

  perf trace:

   - Support syscall tracing for different ABI. For example it can trace
     system calls for 32-bit applications on 64-bit kernel
     transparently.

   - Add --summary-mode=total option to show global syscall summary. The
     default is 'thread' to show per-thread syscall summary.

  Python support:

   - Add more interfaces to 'perf' module to parse events, and config,
     enable or disable the event list properly so that it can implement
     basic functionalities purely in Python. There is an example code
     for these new interfaces in python/tracepoint.py.

   - Add mypy and pylint support to enable build time checking. Fix some
     code based on the findings from these tools.

  Internals:

   - Introduce io_dir__readdir() API to make directory traveral (usually
     for proc or sysfs) efficient with less memory footprint.

  JSON vendor events:

   - Add events and metrics for ARM Neoverse N3 and V3

   - Update events and metrics on various Intel CPUs

   - Add/update events for a number of SiFive processors"

* tag 'perf-tools-for-v6.15-2025-03-27' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (229 commits)
  perf bpf-filter: Fix a parsing error with comma
  perf report: Fix a memory leak for perf_env on AMD
  perf trace: Fix wrong size to bpf_map__update_elem call
  perf tools: annotate asm_pure_loop.S
  perf python: Fix setup.py mypy errors
  perf test: Address attr.py mypy error
  perf build: Add pylint build tests
  perf build: Add mypy build tests
  perf build: Rename TEST_LOGS to SHELL_TEST_LOGS
  tools/build: Don't pass test log files to linker
  perf bench sched pipe: fix enforced blocking reads in worker_thread
  perf tools: Fix is_compat_mode build break in ppc64
  perf build: filter all combinations of -flto for libperl
  perf vendor events arm64 AmpereOneX: Fix frontend_bound calculation
  perf vendor events arm64: AmpereOne/AmpereOneX: Mark LD_RETIRED impacted by errata
  perf trace: Fix evlist memory leak
  perf trace: Fix BTF memory leak
  perf trace: Make syscall table stable
  perf syscalltbl: Mask off ABI type for MIPS system calls
  perf build: Remove Makefile.syscalls
  ...
 2025-03-31 08:52:33 -07:00
Andrei Lalaev
c1f4534b21 scripts: generate_rust_analyzer: fix pin-init name in kernel deps 
Because of different crate names ("pin-init" and "pin_init") passed to
"append_crate" and "append_crate_with_generated", the script fails with
"KeyError: 'pin-init'".

To overcome the issue, pass the same name to both functions.

Signed-off-by: Andrei Lalaev <andrei.lalaev@anton-paar.com>
Link: https://lore.kernel.org/r/AM9PR03MB7074692E5D24C288D2BBC801C8AD2@AM9PR03MB7074.eurprd03.prod.outlook.com
Fixes: 4e82c87058f4 ("Merge tag 'rust-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux")
[ Made author match the Signed-off-by one. Added newline. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
 2025-03-31 10:50:54 +02:00
Kent Overstreet
650f5353dc bcachefs: fix bch2_write_point_to_text() units 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2025-03-30 20:04:16 -04:00
Linus Torvalds
4e82c87058 Rust changes for v6.15 
Toolchain and infrastructure:
 
  - Extract the 'pin-init' API from the 'kernel' crate and make it into
    a standalone crate.
 
    In order to do this, the contents are rearranged so that they can
    easily be kept in sync with the version maintained out-of-tree that
    other projects have started to use too (or plan to, like QEMU).
 
    This will reduce the maintenance burden for Benno, who will now have
    his own sub-tree, and will simplify future expected changes like the
    move to use 'syn' to simplify the implementation.
 
  - Add '#[test]'-like support based on KUnit.
 
    We already had doctests support based on KUnit, which takes the
    examples in our Rust documentation and runs them under KUnit.
 
    Now, we are adding the beginning of the support for "normal" tests,
    similar to those the '#[test]' tests in userspace Rust. For instance:
 
        #[kunit_tests(my_suite)]
        mod tests {
            #[test]
            fn my_test() {
                assert_eq!(1 + 1, 2);
            }
        }
 
    Unlike with doctests, the 'assert*!'s do not map to the KUnit
    assertion APIs yet.
 
  - Check Rust signatures at compile time for functions called from C by
    name.
 
    In particular, introduce a new '#[export]' macro that can be placed
    in the Rust function definition. It will ensure that the function
    declaration on the C side matches the signature on the Rust function:
 
        #[export]
        pub unsafe extern "C" fn my_function(a: u8, b: i32) -> usize {
            // ...
        }
 
    The macro essentially forces the compiler to compare the types of
    the actual Rust function and the 'bindgen'-processed C signature.
 
    These cases are rare so far. In the future, we may consider
    introducing another tool, 'cbindgen', to generate C headers
    automatically. Even then, having these functions explicitly marked
    may be a good idea anyway.
 
  - Enable the 'raw_ref_op' Rust feature: it is already stable, and
    allows us to use the new '&raw' syntax, avoiding a couple macros.
    After everyone has migrated, we will disallow the macros.
 
  - Pass the correct target to 'bindgen' on Usermode Linux.
 
  - Fix 'rusttest' build in macOS.
 
 'kernel' crate:
 
  - New 'hrtimer' module: add support for setting up intrusive timers
    without allocating when starting the timer. Add support for
    'Pin<Box<_>>', 'Arc<_>', 'Pin<&_>' and 'Pin<&mut _>' as pointer types
    for use with timer callbacks. Add support for setting clock source
    and timer mode.
 
  - New 'dma' module: add a simple DMA coherent allocator abstraction and
    a test sample driver.
 
  - 'list' module: make the linked list 'Cursor' point between elements,
    rather than at an element, which is more convenient to us and allows
    for cursors to empty lists; and document it with examples of how to
    perform common operations with the provided methods.
 
  - 'str' module: implement a few traits for 'BStr' as well as the
    'strip_prefix()' method.
 
  - 'sync' module: add 'Arc::as_ptr'.
 
  - 'alloc' module: add 'Box::into_pin'.
 
  - 'error' module: extend the 'Result' documentation, including a few
    examples on different ways of handling errors, a warning about using
    methods that may panic, and links to external documentation.
 
 'macros' crate:
 
   - 'module' macro: add the 'authors' key to support multiple authors.
     The original key will be kept until everyone has migrated.
 
 Documentation:
 
  - Add error handling sections.
 
 MAINTAINERS:
 
  - Add Danilo Krummrich as reviewer of the Rust "subsystem".
 
  - Add 'RUST [PIN-INIT]' entry with Benno Lossin as maintainer. It has
    its own sub-tree.
 
  - Add sub-tree for 'RUST [ALLOC]'.
 
  - Add 'DMA MAPPING HELPERS DEVICE DRIVER API [RUST]' entry with Abdiel
    Janulgue as primary maintainer. It will go through the sub-tree of
    the 'RUST [ALLOC]' entry.
 
  - Add 'HIGH-RESOLUTION TIMERS [RUST]' entry with Andreas Hindborg as
    maintainer. It has its own sub-tree.
 
 And a few other cleanups and improvements.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEPjU5OPd5QIZ9jqqOGXyLc2htIW0FAmfpQgAACgkQGXyLc2ht
 IW35CQ//VOIFKtG6qgHVMIxrmpT7YFsrAU41h+cHT2lzy5KiTqSYlCgd18SJ+Iyy
 vi1ylfdyqOpH5EoO+opPN2H4E+VUlRJg7BkZrT4p1lgGDEKg1mtR/825TxquLNFM
 A653f3FvK/scMb6X43kWNKGK/jnxlfxBGmUwIY4/p7+adIuZzXnNbPkV9XYGLx3r
 8KIBKJ9gM52eXoCoF8XJpg6Vg/0rYWIet32OzYF0PvzSAOqUlH4keu15jeUo+59V
 tgCzAkc2yV3oSo721KYlpPeCPKI5iVCzIcwT0n8fqraXtgGnaFPe5XF16U9Qvrjv
 vRp5/dePAHwsOcj5ErzOgLMqGa1sqY76lxDI05PNcBJ8fBAhNEV/rpCTXs/wRagQ
 xUZOdsQyEn0V/BOtV+dnwu410dElEeJdOAeojSYFm1gUay43a0e6yIboxn3Ylnfx
 8jONSokZ/UFHX3wOFNqHeXsY+REB8Qq8OZXjNBZVFpKHNsICWA0G3BcCRnB1815k
 0v7seSdrST78EJ/A5nM0a9gghuLzYgAN04SDx0FzKjb2mHs3PiVfXDvrNMCJ0pBW
 zbF9RlvszKZStY5tpxdZ5Zh+f7rfYcnJHYhNpoP7DJr136iWP+NnHbk1lK6+o4WY
 lPVdMMgUSUlEXIHgK2ebcb/I1KBrDYiPktmvKAFLrH3qVzhkLAU=
 =PCxf
 -----END PGP SIGNATURE-----

Merge tag 'rust-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux

Pull Rust updates from Miguel Ojeda:
 "Toolchain and infrastructure:

   - Extract the 'pin-init' API from the 'kernel' crate and make it into
     a standalone crate.

     In order to do this, the contents are rearranged so that they can
     easily be kept in sync with the version maintained out-of-tree that
     other projects have started to use too (or plan to, like QEMU).

     This will reduce the maintenance burden for Benno, who will now
     have his own sub-tree, and will simplify future expected changes
     like the move to use 'syn' to simplify the implementation.

   - Add '#[test]'-like support based on KUnit.

     We already had doctests support based on KUnit, which takes the
     examples in our Rust documentation and runs them under KUnit.

     Now, we are adding the beginning of the support for "normal" tests,
     similar to those the '#[test]' tests in userspace Rust. For
     instance:

         #[kunit_tests(my_suite)]
         mod tests {
             #[test]
             fn my_test() {
                 assert_eq!(1 + 1, 2);
             }
         }

     Unlike with doctests, the 'assert*!'s do not map to the KUnit
     assertion APIs yet.

   - Check Rust signatures at compile time for functions called from C
     by name.

     In particular, introduce a new '#[export]' macro that can be placed
     in the Rust function definition. It will ensure that the function
     declaration on the C side matches the signature on the Rust
     function:

         #[export]
         pub unsafe extern "C" fn my_function(a: u8, b: i32) -> usize {
             // ...
         }

     The macro essentially forces the compiler to compare the types of
     the actual Rust function and the 'bindgen'-processed C signature.

     These cases are rare so far. In the future, we may consider
     introducing another tool, 'cbindgen', to generate C headers
     automatically. Even then, having these functions explicitly marked
     may be a good idea anyway.

   - Enable the 'raw_ref_op' Rust feature: it is already stable, and
     allows us to use the new '&raw' syntax, avoiding a couple macros.
     After everyone has migrated, we will disallow the macros.

   - Pass the correct target to 'bindgen' on Usermode Linux.

   - Fix 'rusttest' build in macOS.

  'kernel' crate:

   - New 'hrtimer' module: add support for setting up intrusive timers
     without allocating when starting the timer. Add support for
     'Pin<Box<_>>', 'Arc<_>', 'Pin<&_>' and 'Pin<&mut _>' as pointer
     types for use with timer callbacks. Add support for setting clock
     source and timer mode.

   - New 'dma' module: add a simple DMA coherent allocator abstraction
     and a test sample driver.

   - 'list' module: make the linked list 'Cursor' point between
     elements, rather than at an element, which is more convenient to us
     and allows for cursors to empty lists; and document it with
     examples of how to perform common operations with the provided
     methods.

   - 'str' module: implement a few traits for 'BStr' as well as the
     'strip_prefix()' method.

   - 'sync' module: add 'Arc::as_ptr'.

   - 'alloc' module: add 'Box::into_pin'.

   - 'error' module: extend the 'Result' documentation, including a few
     examples on different ways of handling errors, a warning about
     using methods that may panic, and links to external documentation.

  'macros' crate:

   - 'module' macro: add the 'authors' key to support multiple authors.
     The original key will be kept until everyone has migrated.

  Documentation:

   - Add error handling sections.

  MAINTAINERS:

   - Add Danilo Krummrich as reviewer of the Rust "subsystem".

   - Add 'RUST [PIN-INIT]' entry with Benno Lossin as maintainer. It has
     its own sub-tree.

   - Add sub-tree for 'RUST [ALLOC]'.

   - Add 'DMA MAPPING HELPERS DEVICE DRIVER API [RUST]' entry with
     Abdiel Janulgue as primary maintainer. It will go through the
     sub-tree of the 'RUST [ALLOC]' entry.

   - Add 'HIGH-RESOLUTION TIMERS [RUST]' entry with Andreas Hindborg as
     maintainer. It has its own sub-tree.

  And a few other cleanups and improvements"

* tag 'rust-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: (71 commits)
  rust: dma: add `Send` implementation for `CoherentAllocation`
  rust: macros: fix `make rusttest` build on macOS
  rust: block: refactor to use `&raw mut`
  rust: enable `raw_ref_op` feature
  rust: uaccess: name the correct function
  rust: rbtree: fix comments referring to Box instead of KBox
  rust: hrtimer: add maintainer entry
  rust: hrtimer: add clocksource selection through `ClockId`
  rust: hrtimer: add `HrTimerMode`
  rust: hrtimer: implement `HrTimerPointer` for `Pin<Box<T>>`
  rust: alloc: add `Box::into_pin`
  rust: hrtimer: implement `UnsafeHrTimerPointer` for `Pin<&mut T>`
  rust: hrtimer: implement `UnsafeHrTimerPointer` for `Pin<&T>`
  rust: hrtimer: add `hrtimer::ScopedHrTimerPointer`
  rust: hrtimer: add `UnsafeHrTimerPointer`
  rust: hrtimer: allow timer restart from timer handler
  rust: str: implement `strip_prefix` for `BStr`
  rust: str: implement `AsRef<BStr>` for `[u8]` and `BStr`
  rust: str: implement `Index` for `BStr`
  rust: str: implement `PartialEq` for `BStr`
  ...
 2025-03-30 17:03:26 -07:00
Linus Torvalds
01d5b167dc Modules changes for 6.15-rc1 
- Use RCU instead of RCU-sched
 
   The mix of rcu_read_lock(), rcu_read_lock_sched() and preempt_disable()
   in the module code and its users has been replaced with just
   rcu_read_lock().
 
 - The rest of changes are smaller fixes and updates.
 
 The changes have been on linux-next for at least 2 weeks, with the RCU
 cleanup present for 2 months. One performance problem was reported with the
 RCU change when KASAN + lockdep were enabled, but it was effectively
 addressed by the already merged ee57ab5a3212 ("locking/lockdep: Disable
 KASAN instrumentation of lockdep.c").
 -----BEGIN PGP SIGNATURE-----
 
 iQFIBAABCAAyFiEEIduBR9MnFA82q/jtumpXJwqY6poFAmfmwrsUHHBldHIucGF2
 bHVAc3VzZS5jb20ACgkQumpXJwqY6prWxgf/S7Pvdywm10vJ6fooYa+GxXNMwhyh
 XRjZ4m9gjeTNf2KLwX0XHv0XZeFHOmHfjd3iI+pS6CXZnCFTN9J3XPLYsrTxXUb6
 U6zzLf8Zsz8TzeI4dgvSBsZln7oICSACkAgdJCq23hpNKeaeRo91dgiZaIwyZJG3
 FekqSFtP7pYhfFoNkrFKysqbgl1+RWWZ79L2qRJA0bPzVFlvRUuh6cOHQw+8RMqf
 BYLwnArjTkW8AcXpxIXSiwphDHVZ81B96xoplavyoprA5FDpv1W+8y4DtxdWFn+1
 QVWCs/ZV3KrwXWpZev625w3fIOOIXILqRINOzLfvXTw+1xFS3TzSQEpVeg==
 =4OKc
 -----END PGP SIGNATURE-----

Merge tag 'modules-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux

Pull modules updates from Petr Pavlu:

 - Use RCU instead of RCU-sched

   The mix of rcu_read_lock(), rcu_read_lock_sched() and
   preempt_disable() in the module code and its users has
   been replaced with just rcu_read_lock()

 - The rest of changes are smaller fixes and updates

* tag 'modules-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux: (32 commits)
  MAINTAINERS: Update the MODULE SUPPORT section
  module: Remove unnecessary size argument when calling strscpy()
  module: Replace deprecated strncpy() with strscpy()
  params: Annotate struct module_param_attrs with __counted_by()
  bug: Use RCU instead RCU-sched to protect module_bug_list.
  static_call: Use RCU in all users of __module_text_address().
  kprobes: Use RCU in all users of __module_text_address().
  bpf: Use RCU in all users of __module_text_address().
  jump_label: Use RCU in all users of __module_text_address().
  jump_label: Use RCU in all users of __module_address().
  x86: Use RCU in all users of __module_address().
  cfi: Use RCU while invoking __module_address().
  powerpc/ftrace: Use RCU in all users of __module_text_address().
  LoongArch: ftrace: Use RCU in all users of __module_text_address().
  LoongArch/orc: Use RCU in all users of __module_address().
  arm64: module: Use RCU in all users of __module_text_address().
  ARM: module: Use RCU in all users of __module_text_address().
  module: Use RCU in all users of __module_text_address().
  module: Use RCU in all users of __module_address().
  module: Use RCU in search_module_extables().
  ...
 2025-03-30 15:44:36 -07:00
Linus Torvalds
7405c0f01a Miscellaneous x86 fixes and updates: 
- Fix a large number of x86 Kconfig dependency and help text accuracy
    bugs/problems, by Mateusz Jończyk and David Heideberg.
 
  - Fix a VM_PAT interaction with fork() crash. This also touches
    core kernel code.
 
  - Fix an ORC unwinder bug for interrupt entries
 
  - Fixes and cleanups.
 
  - Fix an AMD microcode loader bug that can promote verification failures
    into success.
 
  - Add early-printk support for MMIO based UARTs on an x86 board that
    had no other serial debugging facility and also experienced early
    boot crashes.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmfnFBERHG1pbmdvQGtl
 cm5lbC5vcmcACgkQEnMQ0APhK1iVDxAAmiB4soT3/WbaWJJdeVyxEL7sOmUNOm04
 5kAVHJVK8QGdje0eWa6h7xmuQD3UOxafE2coCrOxHhZi2qpAAY6CPIIy6oIBRwZK
 gLgT5xn1CHojfm4UFC3YUOyecBRPUF2C5jfkajWdZHumyPP/sOObqvGanpQRAYd5
 bfPHEvrBpeEeS7WkATCdyF2j+I5xYflD4g/MDAsMmqasQHOnjBuFX5VBeVxxkysC
 dMsFkFpxqcA95MnnyOnxXzgOtRTY0UystX07D3Bk1pqhG9zor+mp8OynsTRCU87T
 ZPPbUr2qACNmCqEEXl+F1mAkgj5H66xE2gaJdYx0/jBAIbX8Nwih7mMxhJShVU07
 Lhc0tukmVrDoDaVIr2HsxqI8iokuYLszUjDAqEQmQDrgelL6usPYghN1b2bDSJ9r
 0hCO/s79024H/U9oMrC+CF52D5UH/fE98ipigrbKRIO/hOsoxiiniF3DG2NVWZM2
 n5nPnOdbperqjCEteN1nxQfr7XZkvP95Bwmuqqc90XH+tzKJdHruUkbm4ua7NEEz
 WKgsUIYFjeN5ZrHbJaNtHlQueTyvsyGmL1nlaLi/MaJbSXPsM/WfwvHsaKTh3NrE
 BFwEAhMZVLDHEfnFT0Ev7Mm1MGpW8MbHoRBR1+E5FWWNS4X0yGLKXWRp8diw25Tm
 W3ZVsn65E6U=
 =/qKX
 -----END PGP SIGNATURE-----

Merge tag 'x86-urgent-2025-03-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull misc x86 fixes and updates from Ingo Molnar:

 - Fix a large number of x86 Kconfig dependency and help text accuracy
   bugs/problems, by Mateusz Jończyk and David Heideberg

 - Fix a VM_PAT interaction with fork() crash. This also touches core
   kernel code

 - Fix an ORC unwinder bug for interrupt entries

 - Fixes and cleanups

 - Fix an AMD microcode loader bug that can promote verification
   failures into success

 - Add early-printk support for MMIO based UARTs on an x86 board that
   had no other serial debugging facility and also experienced early
   boot crashes

* tag 'x86-urgent-2025-03-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/microcode/AMD: Fix __apply_microcode_amd()'s return value
  x86/mm/pat: Fix VM_PAT handling when fork() fails in copy_page_range()
  x86/fpu: Update the outdated comment above fpstate_init_user()
  x86/early_printk: Add support for MMIO-based UARTs
  x86/dumpstack: Fix inaccurate unwinding from exception stacks due to misplaced assignment
  x86/entry: Fix ORC unwinder for PUSH_REGS with save_ret=1
  x86/Kconfig: Fix lists in X86_EXTENDED_PLATFORM help text
  x86/Kconfig: Correct X86_X2APIC help text
  x86/speculation: Remove the extra #ifdef around CALL_NOSPEC
  x86/Kconfig: Document release year of glibc 2.3.3
  x86/Kconfig: Make CONFIG_PCI_CNB20LE_QUIRK depend on X86_32
  x86/Kconfig: Document CONFIG_PCI_MMCONFIG
  x86/Kconfig: Update lists in X86_EXTENDED_PLATFORM
  x86/Kconfig: Move all X86_EXTENDED_PLATFORM options together
  x86/Kconfig: Always enable ARCH_SPARSEMEM_ENABLE
  x86/Kconfig: Enable X86_X2APIC by default and improve help text
 2025-03-30 15:25:15 -07:00
Kent Overstreet
7fdc3fa3cb bcachefs: Log original key being moved in data updates 
There's something going on with the data move path; log the original key
being moved for debugging.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2025-03-30 18:25:12 -04:00
Kent Overstreet
edaed8ee8c bcachefs: BCH_JSET_ENTRY_log_bkey 
Add a journal entry type for logging - but logging a bkey, not a string;
to be used for data move path debugging.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2025-03-30 18:25:12 -04:00
Linus Torvalds
b4c5c57c2d Miscellaneous locking fixes and updates: 
- Fix a locking self-test FAIL on PREEMPT_RT kernels
  - Fix nr_unused_locks accounting bug
  - Simplify the split-lock debugging feature's fast-path
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmfnDqERHG1pbmdvQGtl
 cm5lbC5vcmcACgkQEnMQ0APhK1jXVw/+IGVWjYnw5Ac+HyccKwY7+OEmKiGx+9C4
 yS3pc1wrofkpIVRsr0GuOv2h5V+YZJvuRrZPbatVidUkEJAQ++Iaeef+gnunfMX2
 0mRk5B0CG1M+y3lNFOhIEafkGDQOtdFTOmoRv508Xj3mb8cRMRCgkf8S3600l2IB
 ZEw67f8waHy1PwKC+dFlr0QjGL0+qbkrDqB1m4VSy0/egaSNMFjYVLLBAe6gn+/X
 zU/SWBqyV9jSfmwABSiKCpjt/GziuwGoADJpxAbSR/1NaCy866VSBLRjiiLI/c5q
 xdKd3GyD3IhLDCbzKrwVugeioxoPzXLmZKajVhZARv2kPW8DbzUMymP/eVkOf7VJ
 6dDNV3Yyq568YQBi3PQu2vESumHRctLOsRSAr2TnXlbFzBvjBM+Ia11e+p4mg9FU
 Hcn98Rt3FfgigrzH4IeLaYTbm6A5amj2ymoMwjR/vchnB8tlXddc3/KumIdak04Q
 hHRHA0cyNg1YvB/8yB0NKf5jETpbYaaKhCO9KlsceLDjuhrwlmi/XFz+bwBJIBgD
 zug2hevSW2RVRGidJ5Qz91qG76xBkhH038qorcegzGybMQ0p+Hw+/BN7OzPSueaq
 ZMRFde3CtrB332SS73KToG5XvyuffhW8XyCvkOt5W6z9P7n3UOFzDcKr/wrePV9d
 9kEJPdOCOwM=
 =jcdr
 -----END PGP SIGNATURE-----

Merge tag 'locking-urgent-2025-03-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull misc locking fixes and updates from Ingo Molnar:

 - Fix a locking self-test FAIL on PREEMPT_RT kernels

 - Fix nr_unused_locks accounting bug

 - Simplify the split-lock debugging feature's fast-path

* tag 'locking-urgent-2025-03-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/lockdep: Decrease nr_unused_locks if lock unused in zap_class()
  lockdep: Fix wait context check on softirq for PREEMPT_RT
  x86/split_lock: Simplify reenabling
 2025-03-30 15:18:36 -07:00
Linus Torvalds
aa918db707 bpf_try_alloc_pages 
-----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEE+soXsSLHKoYyzcli6rmadz2vbToFAmfkHCQACgkQ6rmadz2v
 bTrzWhAAnDcJsGgSJ9EbElpTfgBWE7aijXo/MsPxxRhORc0uR6MnhPx1iADP4KYj
 lTGEIBgRuDG3qaM4EXpPd32rUJJHv8hot7z9zfvUgSuFNLZEHWXJtz/i4ileOxin
 08zV+zA5WL2fqamAmMRFMI37DeSWy3xU0/qlbWgNnURjPjRri6CF4rVFUWq+QMY+
 XP8ITD/6nOLUR6Bq2M18aHnk2VJWkxVP9Oi+vz1VHbOjKaJC7ATa1+Q4qMqWyTb1
 8IAYWiZR1ZPc214ITaspVzLoLb/wxHxy3QMrdAWAL6sjp0B4J8YxIq1qsBuR1FN7
 TxTRQND/+LjqrAgs5AmFqz3ndKmahjGQWnQEh/rDYJtx+sLJk9hfsMIDF8Wmxuwl
 RftdV0g9bPljR5Qgc9i8DNtEjoAbNjoP8xLjt9HfQakVl8V9jPe0bxZ5tJDf+T0M
 n/VgEjaRzdXqFOLal6Z5wl/jkIn1l1kWQuCMI2z5Z0Ls+PlYX56xdZxfK2Rh3m+e
 3W89vqj9ytJ3rZKG8DRsxukuHwnJ+Gia3XI2h/5cc8kEM5ss1Ase8oIkmrwaLd9x
 +zVXNoDCCPRQgTStwItW+2YdFmE9uijhEZh9yPwT1/rtFuKd0oSebVIpjih/bGqH
 mMN9gYO4+ArSbqku9X2lP3VjMOf6M6SZGm+PzG25PAMGzjqGqwk=
 =AHTr
 -----END PGP SIGNATURE-----

Merge tag 'bpf_try_alloc_pages' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Pull bpf try_alloc_pages() support from Alexei Starovoitov:
 "The pull includes work from Sebastian, Vlastimil and myself with a lot
  of help from Michal and Shakeel.

  This is a first step towards making kmalloc reentrant to get rid of
  slab wrappers: bpf_mem_alloc, kretprobe's objpool, etc. These patches
  make page allocator safe from any context.

  Vlastimil kicked off this effort at LSFMM 2024:

    https://lwn.net/Articles/974138/

  and we continued at LSFMM 2025:

    https://lore.kernel.org/all/CAADnVQKfkGxudNUkcPJgwe3nTZ=xohnRshx9kLZBTmR_E1DFEg@mail.gmail.com/

  Why:

  SLAB wrappers bind memory to a particular subsystem making it
  unavailable to the rest of the kernel. Some BPF maps in production
  consume Gbytes of preallocated memory. Top 5 in Meta: 1.5G, 1.2G,
  1.1G, 300M, 200M. Once we have kmalloc that works in any context BPF
  map preallocation won't be necessary.

  How:

  Synchronous kmalloc/page alloc stack has multiple stages going from
  fast to slow: cmpxchg16 -> slab_alloc -> new_slab -> alloc_pages ->
  rmqueue_pcplist -> __rmqueue, where rmqueue_pcplist was already
  relying on trylock.

  This set changes rmqueue_bulk/rmqueue_buddy to attempt a trylock and
  return ENOMEM if alloc_flags & ALLOC_TRYLOCK. It then wraps this
  functionality into try_alloc_pages() helper. We make sure that the
  logic is sane in PREEMPT_RT.

  End result: try_alloc_pages()/free_pages_nolock() are safe to call
  from any context.

  try_kmalloc() for any context with similar trylock approach will
  follow. It will use try_alloc_pages() when slab needs a new page.
  Though such try_kmalloc/page_alloc() is an opportunistic allocator,
  this design ensures that the probability of successful allocation of
  small objects (up to one page in size) is high.

  Even before we have try_kmalloc(), we already use try_alloc_pages() in
  BPF arena implementation and it's going to be used more extensively in
  BPF"

* tag 'bpf_try_alloc_pages' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next:
  mm: Fix the flipped condition in gfpflags_allow_spinning()
  bpf: Use try_alloc_pages() to allocate pages for bpf needs.
  mm, bpf: Use memcg in try_alloc_pages().
  memcg: Use trylock to access memcg stock_lock.
  mm, bpf: Introduce free_pages_nolock()
  mm, bpf: Introduce try_alloc_pages() for opportunistic page allocation
  locking/local_lock: Introduce localtry_lock_t
 2025-03-30 13:45:28 -07:00
Kent Overstreet
2b47102b93 bcachefs: Reorder error messages that include journal debug 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2025-03-30 16:36:27 -04:00
Kent Overstreet
393a05a741 bcachefs: Don't use designated initializers for disk_accounting_pos 
Not all compilers fully initialize these - they're not guaranteed to
because of the union shenanigans.

Fixes: https://github.com/koverstreet/bcachefs/issues/844
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2025-03-30 16:35:13 -04:00
Kent Overstreet
f548db4d31 bcachefs: Silence errors after emergency shutdown 
We don't care about errors from asynchronous ops that were because we
did an emergency shutdown; silence them.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2025-03-30 16:35:13 -04:00
Kent Overstreet
458e2ef882 bcachefs: fix units in rebalance_status 
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2025-03-30 16:35:13 -04:00
Kent Overstreet
707549600c bcachefs: bch2_ioctl_subvolume_destroy() fixes 
bch2_evict_subvolume_inodes() was getting stuck - due to incorrectly
pruning the dcache.

Also, fix missing permissions checks.

Reported-by: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
 2025-03-30 16:33:22 -04:00
Linus Torvalds
494e7fe591 bpf_res_spin_lock 
-----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEE+soXsSLHKoYyzcli6rmadz2vbToFAmfcq3kACgkQ6rmadz2v
 bToxkw/8DHIqjVnzU2O9hbRM1anYo6yM8e34IxCt0ajHTSEVJ93+C161QDWo/6Dk
 +RNlaeGekaBUk+QOLb4u+rzZ2eR/pWSm37xuDRAiBCQ+3MgR60gGRaSljpS3IUem
 0FvS6C1HObBCEUXMU2rNv/5cJB5/qrQYa9FEEjRvBTLqgQkdS7yaW/KKuZaNb+Ts
 KiEeWvPrPSZXStfRGy8Wr4eS2rYhxPAikUR+xde9CM+HtMWwKTCTSp8qXrqA92Dj
 Cz9ix01scznuf78QCRDZp09im3lZys8ZQprmPgMxyEscN+CDL7n68wAhmTJq0uo3
 3NqIv7zBQ8wMChj0f0HjwZ0Wrj7BJAveY2Q0RterxdzT4vMKdtNkThX46ISaCoX/
 XQAAhZHemK6MvBJk+LKkqqMgrD+3FAzvY7O+SCyUBAMs4FK1myRJQihdLXHGfiBU
 DMDZE1jsE8qBaeUbz4LIuCy8fx2LhtVwVNwbNIBUZHdyfjxIXnQT/8Cnrgklwy2i
 tnYekhAsHDQY+QDkrvJpc4E1vUtiXwSDI5ErcnWdSzctEOyVeUg7OuuGD4riCd1c
 emdJmtASM1z9Ajqa1dytDxVaF6wjKlbhQgnKamuex5JLGCK6makk8ZoB+DBfKYHD
 VoWummTu8ldf+Dp4ehBh7AbeF2vn4kLqcF1PLRsBO6ytJs4HIt8=
 =5O7h
 -----END PGP SIGNATURE-----

Merge tag 'bpf_res_spin_lock' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Pull bpf relisient spinlock support from Alexei Starovoitov:
 "This patch set introduces Resilient Queued Spin Lock (or rqspinlock
  with res_spin_lock() and res_spin_unlock() APIs).

  This is a qspinlock variant which recovers the kernel from a stalled
  state when the lock acquisition path cannot make forward progress.
  This can occur when a lock acquisition attempt enters a deadlock
  situation (e.g. AA, or ABBA), or more generally, when the owner of the
  lock (which we’re trying to acquire) isn’t making forward progress.
  Deadlock detection is the main mechanism used to provide instant
  recovery, with the timeout mechanism acting as a final line of
  defense. Detection is triggered immediately when beginning the waiting
  loop of a lock slow path.

  Additionally, BPF programs attached to different parts of the kernel
  can introduce new control flow into the kernel, which increases the
  likelihood of deadlocks in code not written to handle reentrancy.
  There have been multiple syzbot reports surfacing deadlocks in
  internal kernel code due to the diverse ways in which BPF programs can
  be attached to different parts of the kernel. By switching the BPF
  subsystem’s lock usage to rqspinlock, all of these issues are
  mitigated at runtime.

  This spin lock implementation allows BPF maps to become safer and
  remove mechanisms that have fallen short in assuring safety when
  nesting programs in arbitrary ways in the same context or across
  different contexts.

  We run benchmarks that stress locking scalability and perform
  comparison against the baseline (qspinlock). For the rqspinlock case,
  we replace the default qspinlock with it in the kernel, such that all
  spin locks in the kernel use the rqspinlock slow path. As such,
  benchmarks that stress kernel spin locks end up exercising rqspinlock.

  More details in the cover letter in commit 6ffb9017e932 ("Merge branch
  'resilient-queued-spin-lock'")"

* tag 'bpf_res_spin_lock' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (24 commits)
  selftests/bpf: Add tests for rqspinlock
  bpf: Maintain FIFO property for rqspinlock unlock
  bpf: Implement verifier support for rqspinlock
  bpf: Introduce rqspinlock kfuncs
  bpf: Convert lpm_trie.c to rqspinlock
  bpf: Convert percpu_freelist.c to rqspinlock
  bpf: Convert hashtab.c to rqspinlock
  rqspinlock: Add locktorture support
  rqspinlock: Add entry to Makefile, MAINTAINERS
  rqspinlock: Add macros for rqspinlock usage
  rqspinlock: Add basic support for CONFIG_PARAVIRT
  rqspinlock: Add a test-and-set fallback
  rqspinlock: Add deadlock detection and recovery
  rqspinlock: Protect waiters in trylock fallback from stalls
  rqspinlock: Protect waiters in queue from stalls
  rqspinlock: Protect pending bit owners from stalls
  rqspinlock: Hardcode cond_acquire loops for arm64
  rqspinlock: Add support for timeouts
  rqspinlock: Drop PV and virtualization support
  rqspinlock: Add rqspinlock.h header
  ...
 2025-03-30 13:06:27 -07:00
Linus Torvalds
fa593d0f96 bpf-next-6.15 
-----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEE+soXsSLHKoYyzcli6rmadz2vbToFAmfi6ZAACgkQ6rmadz2v
 bTpLOg/+J7xUddPMhlpFAUlifQEadE5hmw6v1tXpM3zyKHzUWJiv/qsx3j8/ckgD
 D+d4P8bqIbI9SSuIS4oZ0+D9pr/g7GYztnoYZmPiYJ7v2AijPuof5dsagFQE8E2y
 rhfbt9KHTMzzkdkTvaAZaITS/HWAoJ2YVRB6gfLex2ghcXYHcgmtKRZniQrbBiFZ
 MIXBN8Rg6HP+pUdIVllSXFcQCb3XIgjPONRAos4hr5tIm+3Ku7Jvkgk2H/9vUcoF
 bdXAcg8xygyH7eY+1l3e7nEPQlG0jUZEsL+tq+vpdoLRLqlIpAUYmwUvqcmq4dPS
 QGFjiUcpDbXlxsUFpzjXHIFto7fXCfND7HEICQPwAncdflIIfYaATSQUfkEexn0a
 wBCFlAChrEzAmg2vFl4EeEr0fdSe/3jswrgKx0m6ctKieMjgloBUeeH4fXOpfkhS
 9tvhuduVFuronlebM8ew4w9T/mBgbyxkE5KkvP4hNeB3ni3N0K6Mary5/u2HyN1e
 lqTlnZxRA4p6lrvxce/mDrR4VSwlKLcSeQVjxAL1afD5KRkuZJnUv7bUhS361vkG
 IjNrQX30EisDAz+X7tMn3ndBf9vVatwFT4+c3yaxlQRor1WofhDfT88HPiyB4QqQ
 Kdx2EHgbQxJp4vkzhp4/OXlTfkihsMEn8egzZuphdPEQ9Y+Jdwg=
 =aN/V
 -----END PGP SIGNATURE-----

Merge tag 'bpf-next-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Pull bpf updates from Alexei Starovoitov:
 "For this merge window we're splitting BPF pull request into three for
  higher visibility: main changes, res_spin_lock, try_alloc_pages.

  These are the main BPF changes:

   - Add DFA-based live registers analysis to improve verification of
     programs with loops (Eduard Zingerman)

   - Introduce load_acquire and store_release BPF instructions and add
     x86, arm64 JIT support (Peilin Ye)

   - Fix loop detection logic in the verifier (Eduard Zingerman)

   - Drop unnecesary lock in bpf_map_inc_not_zero() (Eric Dumazet)

   - Add kfunc for populating cpumask bits (Emil Tsalapatis)

   - Convert various shell based tests to selftests/bpf/test_progs
     format (Bastien Curutchet)

   - Allow passing referenced kptrs into struct_ops callbacks (Amery
     Hung)

   - Add a flag to LSM bpf hook to facilitate bpf program signing
     (Blaise Boscaccy)

   - Track arena arguments in kfuncs (Ihor Solodrai)

   - Add copy_remote_vm_str() helper for reading strings from remote VM
     and bpf_copy_from_user_task_str() kfunc (Jordan Rome)

   - Add support for timed may_goto instruction (Kumar Kartikeya
     Dwivedi)

   - Allow bpf_get_netns_cookie() int cgroup_skb programs (Mahe Tardy)

   - Reduce bpf_cgrp_storage_busy false positives when accessing cgroup
     local storage (Martin KaFai Lau)

   - Introduce bpf_dynptr_copy() kfunc (Mykyta Yatsenko)

   - Allow retrieving BTF data with BTF token (Mykyta Yatsenko)

   - Add BPF kfuncs to set and get xattrs with 'security.bpf.' prefix
     (Song Liu)

   - Reject attaching programs to noreturn functions (Yafang Shao)

   - Introduce pre-order traversal of cgroup bpf programs (Yonghong
     Song)"

* tag 'bpf-next-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (186 commits)
  selftests/bpf: Add selftests for load-acquire/store-release when register number is invalid
  bpf: Fix out-of-bounds read in check_atomic_load/store()
  libbpf: Add namespace for errstr making it libbpf_errstr
  bpf: Add struct_ops context information to struct bpf_prog_aux
  selftests/bpf: Sanitize pointer prior fclose()
  selftests/bpf: Migrate test_xdp_vlan.sh into test_progs
  selftests/bpf: test_xdp_vlan: Rename BPF sections
  bpf: clarify a misleading verifier error message
  selftests/bpf: Add selftest for attaching fexit to __noreturn functions
  bpf: Reject attaching fexit/fmod_ret to __noreturn functions
  bpf: Only fails the busy counter check in bpf_cgrp_storage_get if it creates storage
  bpf: Make perf_event_read_output accessible in all program types.
  bpftool: Using the right format specifiers
  bpftool: Add -Wformat-signedness flag to detect format errors
  selftests/bpf: Test freplace from user namespace
  libbpf: Pass BPF token from find_prog_btf_id to BPF_BTF_GET_FD_BY_ID
  bpf: Return prog btf_id without capable check
  bpf: BPF token support for BPF_BTF_GET_FD_BY_ID
  bpf, x86: Fix objtool warning for timed may_goto
  bpf: Check map->record at the beginning of check_and_free_fields()
  ...
 2025-03-30 12:43:03 -07:00
Linus Torvalds
7f2ff7b626 misc: Constify amba_id table 
pcc: cleanup and refactoring of shmem and irq handling
 qcom: add MSM8226 compatible
 fsl,mu: add i.MX94 compatible
 core: misc rejig of header includes
 	  minor const fixes
 mediatek: remove cl in struct cmdq_pkt
 tegra: define dimensioning masks in SoC data
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEE6EwehDt/SOnwFyTyf9lkf8eYP5UFAmfohkwACgkQf9lkf8eY
 P5UzGBAAjQLoHWxsQeaBu3iWKOlp4oCNOiDNZDnRc1h3eOtyk3UTxe58AHMs4egv
 aC76zW7Op3e2JhJ5Rw+G6nfg++l+wdU0x6Wa8hT9W9UCMZGcjYQZ/AUbeKLBTcrC
 oGCoUxA/XCeFMFxVQbZWAs0Zt8t0JBWMxzgv6bChKHMGwdd1j7/9mnor3VJSWWGz
 ESoWNnzp9leABPW/rund7Gv05MGxVv6j2AuQF5S90GE3JBUBck4Wh0qQDAxylf6v
 Z6ap+GZn1c+X26MfXSE5FRe/wefs94050/WrYDCmkHbgYf7kfaxjfD+WKd9mH3JW
 hYvCSwHA8raDI6F8J01Q/BP+0lD7Ixh7Ko3HLCDly30HNPNQnApCMOoGLi0P7BSd
 KZAnlwqvYen+9i3mh217OFwXNEa97Q9GRrBIIMhPleJLnweXR7A1KmMTHj0TaKPV
 FxlnPYunH37MDyipTd9Ml2kXpiTfQtTgS7zfceYoNyn7q74g3wUToxqmoN/cn33v
 6hg7XKOKaIWWmM1I6it2r/F0psnLWgh60RSblsN9lMo48Rq89tU1wLAnhdwEOzoL
 6C/zi8Q6cJ+5wxRROfjkSmEtcKftbKX+e/xzUtNQSqiWojAY9p88VtA1mAY3990T
 xVgHlPxy8bh1GN16DZ9BGO/qTUpfjIwFhuzucpAF2Oj3cDd2Or8=
 =Jii1
 -----END PGP SIGNATURE-----

Merge tag 'mailbox-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox

Pull mailbox updates from Jassi Brar:
 "Core:
   - misc rejig of header includes
   - minor const fixes

  Misc:
   - constify amba_id table

  pcc:
   - cleanup and refactoring of shmem and irq handling

  qcom:
   - add MSM8226 compatible

  fsl,mu:
   - add i.MX94 compatible

  mediatek:
   - remove cl in struct cmdq_pkt

  tegra:
   - define dimensioning masks in SoC data"

* tag 'mailbox-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox: (25 commits)
  mailbox: Remove unneeded semicolon
  mailbox: pcc: Refactor and simplify check_and_ack()
  mailbox: pcc: Always map the shared memory communication address
  mailbox: pcc: Refactor error handling in irq handler into separate function
  mailbox: pcc: Use acpi_os_ioremap() instead of ioremap()
  mailbox: pcc: Return early if no GAS register from pcc_mbox_cmd_complete_check
  mailbox: pcc: Drop unnecessary endianness conversion of pcc_hdr.flags
  mailbox: pcc: Always clear the platform ack interrupt first
  mailbox: pcc: Fix the possible race in updation of chan_in_use flag
  dt-bindings: mailbox: qcom: add compatible for MSM8226 SoC
  dt-bindings: mailbox: fsl,mu: Add i.MX94 compatible
  MAINTAINERS: add mailbox API's tree type and location
  mailbox: remove unused header files
  mailbox: explicitly include <linux/bits.h>
  mailbox: sort headers alphabetically
  mailbox: don't protect of_parse_phandle_with_args with con_mutex
  mailbox: use error ret code of of_parse_phandle_with_args()
  mailbox: arm_mhuv2: Constify amba_id table
  mailbox: arm_mhu_db: Constify amba_id table
  mailbox: arm_mhu: Constify amba_id table
  ...
 2025-03-29 18:25:34 -07:00
Linus Torvalds
91481c4ad0 HSI changes for the 6.15 series 
* ssi_protocol: fix potential use after free after module removal
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEE72YNB0Y/i3JqeVQT2O7X88g7+poFAmfl4sUACgkQ2O7X88g7
 +poPpBAAhN2NUlSaK4jnyhc0LZFqRLo6X6Cyuco2RTv3O6h3qza6DBaba0+Fs+6M
 APi30tu2gcjzTjCylyDUovOnl6iARJaksWWG1CUDxZLHl9NxvkzVD3cQACP3vKVZ
 wqDg1ZIA00uQvdJEoksu5XZ3+F/dDvp7KLn4ToXAdpiQZPiih5qUO0lKXdGYlwtT
 tZORr2uao1Br1FGE3HPiWqfA7ezanlOV0n4MRitEg4Hw+oRGaKmOqbQGA71so+mJ
 rmocBa+Iui91DdJAIZ2phHrxgBhIkWek2lUwsExvelEZCtlsaY+k9TarYFwrGzyI
 yU4dqKGEH4BpE1q4ZZ2VCOT6E8hQY72FWQBx/oJCeog6Y38R4V9oHTaQXxSFcUps
 G77ouK4O4kVQYnO4kB0TIALVyUBemYI6GBTdmrTvAl7vbvZA4kOZnUwTXknUull6
 notK/UrhBeNCEVEFvTPOS5bbCgPYTzhmVT2WYRRqGRh7YxsgqpF7gRg3A4n8Cilb
 mp88UVrTRkeQo/ZPiwiwEjyX6bVDRL6d8NE8pbj4wgEJ2Y5Gfs7GvX0/DGr5mxkm
 EFzIyBw8awti/RCWL/AIcaqzlO7u8Qlas0k8nsRYjwkjOB0WlBR+663H+sdPx0s6
 P4MQc5ne3g8zFEdo1y4BDUlXh/GjjjMeQMI0bBgn8MiKOcxphjo=
 =Q7rz
 -----END PGP SIGNATURE-----

Merge tag 'hsi-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi

Pull HSI update from Sebastian Reichel:

 - ssi_protocol: fix potential use after free after module removal

* tag 'hsi-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi:
  HSI: ssi_protocol: Fix use after free vulnerability in ssi_protocol Driver Due to Race Condition
 2025-03-29 18:23:44 -07:00
Linus Torvalds
556f1b4874 power supply and reset changes for the 6.15 series 
* power-supply core
   - remove unused set_charged infrastructure
   - drop of_node from power_supply struct
  * power-supply drivers
   - axp717: support devices without thermistors
   - bq27xxx: support max design voltage for bq270x0 and bq27x10
   - pcf50633: drop charger driver
   - max1720x: add battery health support
   - switch all power-supply devices from of_node to fwnode
   - convert regmap users to maple tree register cache
   - convert drivers to devm_kmemdup_array
   - misc cleanups and fixes
  * reset drivers
   - at91-sama5d2_shdwc: add sama7d65 support
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEE72YNB0Y/i3JqeVQT2O7X88g7+poFAmfmAhAACgkQ2O7X88g7
 +pqUVA//QoohKXgC1WOsias7WU0pw+D+zjpGUtiCTyw0EVBjEGcRiK1Fa2mhgn0x
 jQnB84K0WbNZN9uuquMZXBBU7lMQIX/Lltjsy04Y0ZpEdvaO7XpbHXfumy/O5q/3
 xqQzJm+sscE/jBLABauLchSu3Ro3/RlazG9N6XWA8MS9cqUx0wJqsXaITLvrFAsP
 mgV+Ybnusnd1oHjbceccPZzUHqWeBVHE5+fpJlB8HfrmovG3jvfjRtaUabsmhHVM
 afpDXHx7amGJVU3Ild8CRp7UGM0w3RXk7HT3e98o6lzVsULP6JwyCBKq7pUivjF8
 xnGROrpyuYl8yZ8U55cROk0kxEu984o7h1b+SU6ZEXtXwOCUn6Cb+eOSxNUmCKi4
 orl8iEdO/Elxe+L6LnbQUcSgnGg3w6Ugl9rAb+MJ/8R6srrFpghAv7WnnRgJFmKW
 Yt58NtQzCs6yLtgMcnhE98sGgBCD/uBV8xxqtntiKXReTREfVy+dFGlRCJJCSmBN
 TNg49PgOKUyAOYR/7NBBlco9YKMgsKzb3vfOmoO+o3VQy0WYRrC3wOOGkUTQVfTb
 oPXdB3H4hD+eZ5SvGtwSm3E23LWhBlLfb8Zoo45oRpYzqmfQ3vUekKuuzGlScgPY
 Anpua874fJk07SYyz8nE/VMR2BjVyz3Jf98zKdO0Gw35FXDcaTQ=
 =C0aa
 -----END PGP SIGNATURE-----

Merge tag 'for-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply

Pull power supply and reset updates from Sebastian Reichel:
 "Power-supply core:
   - remove unused set_charged infrastructure
   - drop of_node from power_supply struct

  Power-supply drivers:
   - axp717: support devices without thermistors
   - bq27xxx: support max design voltage for bq270x0 and bq27x10
   - pcf50633: drop charger driver
   - max1720x: add battery health support
   - switch all power-supply devices from of_node to fwnode
   - convert regmap users to maple tree register cache
   - convert drivers to devm_kmemdup_array
   - misc cleanups and fixes

  Reset drivers:
   - at91-sama5d2_shdwc: add sama7d65 support

* tag 'for-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (30 commits)
  power: supply: mt6370: Remove redundant 'flush_workqueue()' calls
  Revert "power: supply: bq27xxx: do not report bogus zero values"
  power: supply: max77693: Fix wrong conversion of charge input threshold value
  power: supply: pcf50633: Remove charger
  power: supply: all: switch psy_cfg from of_node to fwnode
  power: supply: core: get rid of of_node
  power: reset: at91-sama5d2_shdwc: Add sama7d65 PMC
  power: supply: smb347: convert to use maple tree register cache
  power: supply: rt9455: convert to use maple tree register cache
  power: supply: max1720x: convert to use maple tree register cache
  power: supply: ltc4162l: convert to use maple tree register cache
  power: supply: bq25980: convert to use maple tree register cache
  power: supply: bq25890: convert to use maple tree register cache
  power: supply: bq2515x: convert to use maple tree register cache
  power: supply: bq24257: convert to use maple tree register cache
  power: supply: bd99954: convert to use maple tree register cache
  power: supply: Remove unused set_charged method
  power: supply: ds2760: Remove unused ds2760_battery_set_charged
  power: supply: core: Remove unused power_supply_set_battery_charged
  power: supply: sc27xx: use devm_kmemdup_array()
  ...
 2025-03-29 18:11:12 -07:00
Linus Torvalds
59c35416f4 Here's the pile of clk driver patches. The usual suspects^Wsilicon 
vendors are all here, adding new SoC support and fixing existing code.
 There are a few patches to the clk framework here as well. They've been
 baking in linux-next for weeks so I'm hoping we don't have to revert
 them. The disable OF node patch is probably the scariest one although it
 seems unlikely that a system would be relying on a driver _not_ probing
 because the clk never appeared, but you never know. Nothing looks out of
 the ordinary on the driver side but that's because it's mostly a bunch
 of data.
 
 Core:
  - Use dev_err_probe() in the clk registration path (Peering into the
    crystal ball shows many patches that remove printks)
  - Check for disabled OF nodes in of_clk_get_hw_from_clkspec()
 
 New Drivers:
  - Allwinner A523/T527 clk driver
  - Qualcomm IPQ9574 NSS clk driver
  - Qualcomm QCS8300 GPU and video clk drivers
  - Qualcomm SDM429 RPM clks
  - Qualcomm QCM6490 LPASS (low power audio) resets
  - Samsung Exynos2200: driver for several clock controllers (Alive,
    CMGP, HSI, PERIC/PERIS, TOP, UFS and VFS)
  - Samsung Exynos7870: Driver for several clock controllers (Alive, MIF,
    DISP AUD, FSYS, G3D, ISP, MFC and PERI)
  - Rockchip rk3528 and rk3562 clk driver
 
 Updates:
  - Various fixes to SoC clk drivers for incorrect data, avoid touching
    protected registers, etc.
  - Additions for some missing clks in existing SoC clk drivers
  - DT schema conversions from text to YAML
  - Kconfig cleanups to allow drivers to be compiled on moar
    architectures
 -----BEGIN PGP SIGNATURE-----
 
 iQJFBAABCAAvFiEE9L57QeeUxqYDyoaDrQKIl8bklSUFAmfm9fYRHHNib3lkQGtl
 cm5lbC5vcmcACgkQrQKIl8bklSWl9w/9Ed68QreuOgHOo8tnOeqtGMvYEaJ7fnA4
 4P4nsLtSwD1J5ZxOMgE4d2PpyRAFeaRhcbqYhiyk/DJZ0qnkXfQWOwhRS33IS7A/
 cf+n0liMMXDDjQ5E0mLqbjzrJVKnb1q9Y0QnKaPJBtl/Ehn8l2bPluJlO5AdmgkE
 /wn9uCxY/5qaffaLWjVp/el5QnwixCbYsn5NV/gBwSCj8quTAGu5MNIE547gjhXK
 p2zfAcQ66r+Sdd2MT5sXnMpvuzvFxhRl21Nz7Ea9yo8legzdbrVqNuH1WSlvLHUV
 w1rshP1IcEBRseiP96eTlz6BJfjGfFClbzP9dv5s+XxinRpxTh+izp8xaEQGcsGP
 VrDIAo6vW9TO5U3HQHt7u2LgzGNB+kLKmXzxYvPyCB4lW8dIKfPv4QE+EGGCiMM/
 KHGeukREObqW7vOvTMejBGxwer7qUB75DWRDMtTQJYmncvPn9efO0+cl0SbT8M9b
 fXJsTI4PuGoFEowwq4VPoELhiafB9hXlzaFF58IHwssLEjM4GgdUePuDizsfNYzr
 zD0k+o6zWXXP5jJLvHsdxuiRK99rEHRb03s+v4yAilTK+cRislQIvyUy3mSw6LBF
 bZe77U/9aEINMsxTehVXmsG7aaf3B32RHi03YOXWu8JtC36hhRhdJQKXMgl2G0gZ
 ND7dptBkM9M=
 =RRKz
 -----END PGP SIGNATURE-----

Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk updates from Stephen Boyd:
 "Here's the pile of clk driver patches. The usual suspects^Wsilicon
  vendors are all here, adding new SoC support and fixing existing code.

  There are a few patches to the clk framework here as well. They've
  been baking in linux-next for weeks so I'm hoping we don't have to
  revert them. The disable OF node patch is probably the scariest one
  although it seems unlikely that a system would be relying on a driver
  _not_ probing because the clk never appeared, but you never know.

  Nothing looks out of the ordinary on the driver side but that's
  because it's mostly a bunch of data.

  Core:
   - Use dev_err_probe() in the clk registration path (Peering into the
     crystal ball shows many patches that remove printks)
   - Check for disabled OF nodes in of_clk_get_hw_from_clkspec()

  New Drivers:
   - Allwinner A523/T527 clk driver
   - Qualcomm IPQ9574 NSS clk driver
   - Qualcomm QCS8300 GPU and video clk drivers
   - Qualcomm SDM429 RPM clks
   - Qualcomm QCM6490 LPASS (low power audio) resets
   - Samsung Exynos2200: driver for several clock controllers (Alive,
     CMGP, HSI, PERIC/PERIS, TOP, UFS and VFS)
   - Samsung Exynos7870: Driver for several clock controllers (Alive,
     MIF, DISP AUD, FSYS, G3D, ISP, MFC and PERI)
   - Rockchip rk3528 and rk3562 clk driver

  Updates:
   - Various fixes to SoC clk drivers for incorrect data, avoid touching
     protected registers, etc.
   - Additions for some missing clks in existing SoC clk drivers
   - DT schema conversions from text to YAML
   - Kconfig cleanups to allow drivers to be compiled on moar
     architectures"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (125 commits)
  clk: qcom: Add NSS clock Controller driver for IPQ9574
  clk: qcom: gcc-ipq9574: Add support for gpll0_out_aux clock
  dt-bindings: clock: Add ipq9574 NSSCC clock and reset definitions
  dt-bindings: clock: gcc-ipq9574: Add definition for GPLL0_OUT_AUX
  clk: qcom: gcc-msm8953: fix stuck venus0_core0 clock
  clk: qcom: mmcc-sdm660: fix stuck video_subcore0 clock
  dt-bindings: clock: qcom,x1e80100-camcc: Fix the list of required-opps
  clk: amlogic: a1: fix a typo
  clk: amlogic: gxbb: drop non existing 32k clock parent
  clk: amlogic: gxbb: drop incorrect flag on 32k clock
  clk: amlogic: g12b: fix cluster A parent data
  clk: amlogic: g12a: fix mmc A peripheral clock
  dt-bindings: clocks: atmel,at91rm9200-pmc: add missing compatibles
  dt-bindings: reset: fix double id on rk3562-cru reset ids
  drivers: clk: qcom: ipq5424: fix the freq table of sdcc1_apps clock
  clk: qcom: lpassaudiocc-sc7280: Add support for LPASS resets for QCM6490
  dt-bindings: clock: qcom: Add compatible for QCM6490 boards
  clk: qcom: gdsc: Update the status poll timeout for GDSC
  clk: qcom: gdsc: Set retain_ff before moving to HW CTRL
  clk: davinci: remove support for da830
  ...
 2025-03-29 17:23:34 -07:00