Nathan Chancellor 0600597c85 kasan: initialize tag to 0xff in __kasan_kmalloc ... When building with -Wuninitialized and CONFIG_KASAN_SW_TAGS unset, Clang warns: mm/kasan/common.c:484:40: warning: variable 'tag' is uninitialized when used here [-Wuninitialized] kasan_unpoison_shadow(set_tag(object, tag), size); ^~~ set_tag ignores tag in this configuration but clang doesn't realize it at this point in its pipeline, as it points to arch_kasan_set_tag as being the point where it is used, which will later be expanded to (void *)(object) without a use of tag. Initialize tag to 0xff, as it removes this warning and doesn't change the meaning of the code. Link: https://github.com/ClangBuiltLinux/linux/issues/465 Link: http://lkml.kernel.org/r/20190502163057.6603-1-natechancellor@gmail.com Fixes: 7f94ffbc4c ("kasan: add hooks implementation for tag-based mode") Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Reviewed-by: Andrey Konovalov <andreyknvl@google.com> Reviewed-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2019-06-01 15:51:31 -07:00
..
common.c	kasan: initialize tag to 0xff in __kasan_kmalloc	2019-06-01 15:51:31 -07:00
generic.c
generic_report.c
init.c
kasan.h
Makefile	arm64 updates for 5.2	2019-05-06 17:54:22 -07:00
quarantine.c
report.c	Merge branch 'core-stacktrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-05-06 13:11:48 -07:00
tags.c
tags_report.c