Commit c412a769 authored Mar 28, 2019 by Qian Cai Committed by Linus Torvalds Mar 29, 2019

kasan: fix variable 'tag' set but not used warning

set_tag() compiles away when CONFIG_KASAN_SW_TAGS=n, so make
arch_kasan_set_tag() a static inline function to fix warnings below.

  mm/kasan/common.c: In function '__kasan_kmalloc':
  mm/kasan/common.c:475:5: warning: variable 'tag' set but not used [-Wunused-but-set-variable]
    u8 tag;
       ^~~

Link: http://lkml.kernel.org/r/20190307185244.54648-1-cai@lca.pw


Signed-off-by: Qian Cai <cai@lca.pw>
Reviewed-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 8c7ae38d

mm/kasan/kasan.h

+4 −1

Original line number	Diff line number	Diff line
		@@ -163,7 +163,10 @@ static inline u8 random_tag(void)
		#endif

		#ifndef arch_kasan_set_tag
		#define arch_kasan_set_tag(addr, tag) ((void *)(addr))
		static inline const void arch_kasan_set_tag(const void addr, u8 tag)
		{
		return addr;
		}
		#endif
		#ifndef arch_kasan_reset_tag
		#define arch_kasan_reset_tag(addr) ((void *)(addr))

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