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x86/refcounts: Switch to UD2 for exceptions 

As done in commit 3b3a371cc9 ("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
This commit is contained in:
Kees Cook 2018-02-25 08:50:56 -08:00 committed by Thomas Gleixner
parent f3afe530d6
commit cb097be703
1 changed files with 1 additions and 1 deletions
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2
arch/x86/include/asm/refcount.h
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@ -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" \