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| author | Alexander Potapenko <glider@google.com> | 2022-09-15 17:04:09 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-10-03 14:03:24 -0700 |
| commit | ff901d80fff6d65ada6f2a60a1f7d180ee2e0416 (patch) | |
| tree | 5c17d8b1109182bd9b3747b1798318c6494d28e1 /include/linux/fortify-string.h | |
| parent | 9245ec01ce848eb5147e2e5030cf33ffbf1befff (diff) | |
| download | lwn-ff901d80fff6d65ada6f2a60a1f7d180ee2e0416.tar.gz lwn-ff901d80fff6d65ada6f2a60a1f7d180ee2e0416.zip | |
x86: kmsan: use __msan_ string functions where possible.
Unless stated otherwise (by explicitly calling __memcpy(), __memset() or
__memmove()) we want all string functions to call their __msan_ versions
(e.g. __msan_memcpy() instead of memcpy()), so that shadow and origin
values are updated accordingly.
Bootloader must still use the default string functions to avoid crashes.
Link: https://lkml.kernel.org/r/20220915150417.722975-36-glider@google.com
Signed-off-by: Alexander Potapenko <glider@google.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Eric Biggers <ebiggers@google.com>
Cc: Eric Biggers <ebiggers@kernel.org>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Ilya Leoshkevich <iii@linux.ibm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Marco Elver <elver@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vegard Nossum <vegard.nossum@oracle.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/fortify-string.h')
| -rw-r--r-- | include/linux/fortify-string.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/fortify-string.h b/include/linux/fortify-string.h index 3b401fa0f374..6c8a1a29d0b6 100644 --- a/include/linux/fortify-string.h +++ b/include/linux/fortify-string.h @@ -285,8 +285,10 @@ __FORTIFY_INLINE void fortify_memset_chk(__kernel_size_t size, * __builtin_object_size() must be captured here to avoid evaluating argument * side-effects further into the macro layers. */ +#ifndef CONFIG_KMSAN #define memset(p, c, s) __fortify_memset_chk(p, c, s, \ __builtin_object_size(p, 0), __builtin_object_size(p, 1)) +#endif /* * To make sure the compiler can enforce protection against buffer overflows, |