diff options
| author | Dmitry Vyukov <dvyukov@google.com> | 2018-05-12 02:01:35 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-05-12 03:28:45 +0300 |
| commit | c9cf87ea6a4725bc586cc5776c3fb6042a264b7d (patch) | |
| tree | 0421706f27a0e1f2364d204405be93ca32cea867 | |
| parent | 1d1c8e5f0d95c2c97f29122741aed7d0dfb2b391 (diff) | |
| download | linux-c9cf87ea6a4725bc586cc5776c3fb6042a264b7d.tar.xz | |
KASAN: prohibit KASAN+STRUCTLEAK combination
Currently STRUCTLEAK inserts initialization out of live scope of variables
from KASAN point of view. This leads to KASAN false positive reports.
Prohibit this combination for now.
Link: http://lkml.kernel.org/r/20180419172451.104700-1-dvyukov@google.com
Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Dennis Zhou <dennisszhou@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | arch/Kconfig | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/Kconfig b/arch/Kconfig index 8e0d665c8d53..75dd23acf133 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -464,6 +464,10 @@ config GCC_PLUGIN_LATENT_ENTROPY config GCC_PLUGIN_STRUCTLEAK bool "Force initialization of variables containing userspace addresses" depends on GCC_PLUGINS + # Currently STRUCTLEAK inserts initialization out of live scope of + # variables from KASAN point of view. This leads to KASAN false + # positive reports. Prohibit this combination for now. + depends on !KASAN_EXTRA help This plugin zero-initializes any structures containing a __user attribute. This can prevent some classes of information |