Messages in this thread Patch in this message | | | Date | Wed, 28 Feb 2018 06:21:48 -0800 | From | tip-bot for Kees Cook <> | Subject | [tip:x86/urgent] x86/refcounts: Switch to UD2 for exceptions |
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Commit-ID: cb097be7036aa325adba33d8c41fe77b980b0e77 Gitweb: https://git.kernel.org/tip/cb097be7036aa325adba33d8c41fe77b980b0e77 Author: Kees Cook <keescook@chromium.org> AuthorDate: Sun, 25 Feb 2018 08:50:56 -0800 Committer: Thomas Gleixner <tglx@linutronix.de> CommitDate: Wed, 28 Feb 2018 15:18:40 +0100
x86/refcounts: Switch to UD2 for exceptions
As done in commit 3b3a371cc9bc ("x86/debug: Use UD2 for WARN()"), this switches to UD2 from UD0 to keep disassembly readable.
Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lkml.kernel.org/r/20180225165056.GA11719@beast
--- arch/x86/include/asm/refcount.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/refcount.h b/arch/x86/include/asm/refcount.h index d65171120e90..4cf11d88d3b3 100644 --- a/arch/x86/include/asm/refcount.h +++ b/arch/x86/include/asm/refcount.h @@ -17,7 +17,7 @@ #define _REFCOUNT_EXCEPTION \ ".pushsection .text..refcount\n" \ "111:\tlea %[counter], %%" _ASM_CX "\n" \ - "112:\t" ASM_UD0 "\n" \ + "112:\t" ASM_UD2 "\n" \ ASM_UNREACHABLE \ ".popsection\n" \ "113:\n" \
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