* [PATCH] locking/refcounts: Switch to UD2 for exceptions
@ 2018-02-25 16:50 Kees Cook
2018-02-28 14:21 ` [tip:x86/urgent] x86/refcounts: " tip-bot for Kees Cook
0 siblings, 1 reply; 2+ messages in thread
From: Kees Cook @ 2018-02-25 16:50 UTC (permalink / raw)
To: Ingo Molnar; +Cc: Thomas Gleixner, Peter Zijlstra, linux-kernel
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>
---
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 4e44250e7d0d..ebe0ae2548b6 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" \
--
2.7.4
--
Kees Cook
Pixel Security
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [tip:x86/urgent] x86/refcounts: Switch to UD2 for exceptions
2018-02-25 16:50 [PATCH] locking/refcounts: Switch to UD2 for exceptions Kees Cook
@ 2018-02-28 14:21 ` tip-bot for Kees Cook
0 siblings, 0 replies; 2+ messages in thread
From: tip-bot for Kees Cook @ 2018-02-28 14:21 UTC (permalink / raw)
To: linux-tip-commits; +Cc: linux-kernel, hpa, peterz, keescook, mingo, tglx
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" \
^ permalink raw reply related [flat|nested] 2+ messages in thread
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2018-02-25 16:50 [PATCH] locking/refcounts: Switch to UD2 for exceptions Kees Cook
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