Commit-ID: 3b770a2128423a687e6e9c57184a584fb4ba4c77 Gitweb: http://git.kernel.org/tip/3b770a2128423a687e6e9c57184a584fb4ba4c77 Author: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx> AuthorDate: Tue, 13 Jul 2010 14:57:50 -0700 Committer: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx> CommitDate: Tue, 13 Jul 2010 14:57:50 -0700 x86, alternatives: BUG on encountering an invalid CPU feature number Make the alternatives-patching code BUG on encountering an invalid CPU feature number. Should have done this a long time ago. Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx> Cc: Yinghai Lu <yinhai@xxxxxxxxxx> Cc: Suresh Siddha <suresh.b.siddha@xxxxxxxxx> LKML-Reference: <tip-df378ccfc4dd04e263426ad805516915874774aa@xxxxxxxxxxxxxx> --- arch/x86/kernel/alternative.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c index 7023773..f65ab8b 100644 --- a/arch/x86/kernel/alternative.c +++ b/arch/x86/kernel/alternative.c @@ -214,6 +214,7 @@ void __init_or_module apply_alternatives(struct alt_instr *start, u8 *instr = a->instr; BUG_ON(a->replacementlen > a->instrlen); BUG_ON(a->instrlen > sizeof(insnbuf)); + BUG_ON(a->cpuid >= NCAPINTS*32); if (!boot_cpu_has(a->cpuid)) continue; #ifdef CONFIG_X86_64 -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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