* [PATCH] arm64: do not trace atomic operations
@ 2017-02-06 14:16 Pratyush Anand
0 siblings, 0 replies; only message in thread
From: Pratyush Anand @ 2017-02-06 14:16 UTC (permalink / raw)
To: linux-arm-kernel
Atomic operation function symbols are exported,when
CONFIG_ARM64_LSE_ATOMICS is defined. Prefix them with notrace, so that
an user can not trace these functions. Tracing these functions causes
kernel crash.
Signed-off-by: Pratyush Anand <panand@redhat.com>
---
arch/arm64/include/asm/lse.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/include/asm/lse.h b/arch/arm64/include/asm/lse.h
index fc756e22c84c..606b20910a5c 100644
--- a/arch/arm64/include/asm/lse.h
+++ b/arch/arm64/include/asm/lse.h
@@ -19,7 +19,7 @@
__asm__(".arch_extension lse");
/* Move the ll/sc atomics out-of-line */
-#define __LL_SC_INLINE
+#define __LL_SC_INLINE notrace
#define __LL_SC_PREFIX(x) __ll_sc_##x
#define __LL_SC_EXPORT(x) EXPORT_SYMBOL(__LL_SC_PREFIX(x))
--
2.9.3
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2017-02-06 14:16 [PATCH] arm64: do not trace atomic operations Pratyush Anand
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