diff options
| author | Ilya Leoshkevich <iii@linux.ibm.com> | 2024-06-21 13:35:04 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-07-03 19:30:23 -0700 |
| commit | 89f42df66c32690a2d0087b12948bcf9e336d56e (patch) | |
| tree | a8f100a98abcf65f4416587d3ad36be686dad2fc /lib/zlib_dfltcc/dfltcc.h | |
| parent | 4d7b5a2cec6efb4dfd42a3fddf321d4d828e794d (diff) | |
lib/zlib: unpoison DFLTCC output buffers
The constraints of the DFLTCC inline assembly are not precise: they do not
communicate the size of the output buffers to the compiler, so it cannot
automatically instrument it.
Add the manual kmsan_unpoison_memory() calls for the output buffers. The
logic is the same as in [1].
[1] https://github.com/zlib-ng/zlib-ng/commit/1f5ddcc009ac3511e99fc88736a9e1a6381168c5
Link: https://lkml.kernel.org/r/20240621113706.315500-21-iii@linux.ibm.com
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reported-by: Alexander Gordeev <agordeev@linux.ibm.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: <kasan-dev@googlegroups.com>
Cc: Marco Elver <elver@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Steven Rostedt (Google) <rostedt@goodmis.org>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'lib/zlib_dfltcc/dfltcc.h')
| -rw-r--r-- | lib/zlib_dfltcc/dfltcc.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/zlib_dfltcc/dfltcc.h b/lib/zlib_dfltcc/dfltcc.h index b96232bdd44d..0f2a16d7a48a 100644 --- a/lib/zlib_dfltcc/dfltcc.h +++ b/lib/zlib_dfltcc/dfltcc.h @@ -80,6 +80,7 @@ struct dfltcc_param_v0 { uint8_t csb[1152]; }; +static_assert(offsetof(struct dfltcc_param_v0, csb) == 384); static_assert(sizeof(struct dfltcc_param_v0) == 1536); #define CVT_CRC32 0 |