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efi/cper: Fix cper_arm_ctx_info alignment

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According to the UEFI Common Platform Error Record appendix, the
processor context information structure is a variable length structure,
but "is padded with zeros if the size is not a multiple of 16 bytes".

Currently this isn't honoured, causing all but the first structure to
be garbage when printed. Thus align the size to be a multiple of 16.

Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
This commit is contained in:
Patrick Rudolph 2025-02-21 12:15:16 +01:00 committed by Ard Biesheuvel
parent 174e5e9da4
commit d6a2d02aa0
1 changed files with 1 additions and 1 deletions
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2
drivers/firmware/efi/cper-arm.c
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@ -311,7 +311,7 @@ void cper_print_proc_arm(const char *pfx,
ctx_info = (struct cper_arm_ctx_info *)err_info;
max_ctx_type = ARRAY_SIZE(arm_reg_ctx_strs) - 1;
for (i = 0; i < proc->context_info_num; i++) {
int size = sizeof(*ctx_info) + ctx_info->size;
int size = ALIGN(sizeof(*ctx_info) + ctx_info->size, 16);
printk("%sContext info structure %d:\n", pfx, i);
if (len < size) {