niansa-misc/linux
1
0
Fork 0
mirror of synced 2025-03-06 20:59:54 +01:00
Code Issues Projects Releases Packages Wiki Activity

efi/cper: Fix cper_ia_proc_ctx alignment

Browse source 
According to the UEFI Common Platform Error Record appendix, the
IA32/X64 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 09:12:42 +01:00 • committed by Ard Biesheuvel
parent bbc4578537
commit 174e5e9da4
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/firmware/efi/cper-x86.c
View file

@ -325,7 +325,7 @@ void cper_print_proc_ia(const char *pfx, const struct cper_sec_proc_ia *proc)
ctx_info = (struct cper_ia_proc_ctx *)err_info;
for (i = 0; i < VALID_PROC_CXT_INFO_NUM(proc->validation_bits); i++) {
int size = sizeof(*ctx_info) + ctx_info->reg_arr_size;
int size = ALIGN(sizeof(*ctx_info) + ctx_info->reg_arr_size, 16);
int groupsize = 4;
printk("%sContext Information Structure %d:\n", pfx, i);