From: Patrick Rudolph Date: Fri, 21 Feb 2025 08:12:42 +0000 (+0100) Subject: efi/cper: Fix cper_ia_proc_ctx alignment X-Git-Tag: v6.14-rc5~21^2~5 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=174e5e9da4f5946de3d09c32ee56cbbc9d70505b;p=thirdparty%2Fkernel%2Flinux.git efi/cper: Fix cper_ia_proc_ctx alignment 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 Signed-off-by: Ard Biesheuvel --- diff --git a/drivers/firmware/efi/cper-x86.c b/drivers/firmware/efi/cper-x86.c index 438ed9eff6d01..3949d7b5e808f 100644 --- a/drivers/firmware/efi/cper-x86.c +++ b/drivers/firmware/efi/cper-x86.c @@ -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);