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

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(Upstream commit c412a769d2452161e97f163c4c4f31efc6626f06).

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>
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Bug: 128674696
Change-Id: I46b33353a25e5e3e0ef7b61dba56ae52922a5452
This commit is contained in:
Qian Cai 2019-03-28 20:43:15 -07:00 committed by Alistair Delva
parent 2a548c12ba
commit 0ee9b4391a
1 changed files with 4 additions and 1 deletions
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5
mm/kasan/kasan.h
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@ -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))