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Marco Elver e64f81946a kfence: skip __GFP_THISNODE allocations on NUMA systems

On NUMA systems, __GFP_THISNODE indicates that an allocation _must_ be on
a particular node, and failure to allocate on the desired node will result
in a failed allocation.

Skip __GFP_THISNODE allocations if we are running on a NUMA system, since
KFENCE can't guarantee which node its pool pages are allocated on.

Link: https://lkml.kernel.org/r/20250124120145.410066-1-elver@google.com
Fixes: 236e9f153852 ("kfence: skip all GFP_ZONEMASK allocations")
Signed-off-by: Marco Elver <elver@google.com>
Reported-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Christoph Lameter <cl@linux.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Chistoph Lameter <cl@linux.com>
Cc: Dmitriy Vyukov <dvyukov@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

2025-02-01 03:53:26 -08:00

.kunitconfig

kfence: test: use new suite_{init/exit} support, add .kunitconfig

2022-05-02 12:35:57 -06:00

core.c

kfence: skip __GFP_THISNODE allocations on NUMA systems

2025-02-01 03:53:26 -08:00

kfence_test.c

mm/kfence: use str_write_read() helper in get_access_type()

2025-01-25 20:22:45 -08:00

kfence.h

kfence: save freeing stack trace at calling time instead of freeing time