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compiler: introduce __no_sanitize_address_or_inline

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Due to conflict between kasan instrumentation and inlining
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67368 functions which are
defined as inline could not be called from functions defined with
__no_sanitize_address.

Introduce __no_sanitize_address_or_inline which would expand to
__no_sanitize_address when the kernel is built with kasan support and
to inline otherwise. This helps to avoid disabling kasan
instrumentation for entire files.

Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Vasily Gorbik
2017-11-20 11:16:14 +01:00
committed by Martin Schwidefsky
parent d58106c3ec
commit dde709d136
1 changed files with 7 additions and 0 deletions
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7
include/linux/compiler-gcc.h
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@@ -208,6 +208,12 @@
* Conflicts with inlining: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67368 * Conflicts with inlining: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67368
*/ */
#define __no_sanitize_address __attribute__((no_sanitize_address)) #define __no_sanitize_address __attribute__((no_sanitize_address))
#ifdef CONFIG_KASAN
#define __no_sanitize_address_or_inline \
__no_sanitize_address __maybe_unused notrace
#else
#define __no_sanitize_address_or_inline inline
#endif
#endif #endif
#if GCC_VERSION >= 50100 #if GCC_VERSION >= 50100
@@ -225,6 +231,7 @@
#if !defined(__no_sanitize_address) #if !defined(__no_sanitize_address)
#define __no_sanitize_address #define __no_sanitize_address
#define __no_sanitize_address_or_inline inline
#endif #endif
/* /*