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linux/lib/zlib_dfltcc
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Ilya Leoshkevich 89f42df66c 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] 1f5ddcc009

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>
History 2024-07-03 19:30:23 -07:00
..
dfltcc.c lib/zlib: Split deflate and inflate states for DFLTCC 2023-02-02 22:50:09 -08:00
dfltcc.h lib/zlib: unpoison DFLTCC output buffers 2024-07-03 19:30:23 -07:00
dfltcc_deflate.c lib/zlib: remove redundation assignement of avail_in dfltcc_gdht() 2023-02-02 22:50:10 -08:00
dfltcc_deflate.h lib/zlib: Split deflate and inflate states for DFLTCC 2023-02-02 22:50:09 -08:00
dfltcc_inflate.c lib/zlib: DFLTCC always switch to software inflate for Z_PACKET_FLUSH option 2023-02-02 22:50:09 -08:00
dfltcc_inflate.h lib/zlib: Split deflate and inflate states for DFLTCC 2023-02-02 22:50:09 -08:00
dfltcc_util.h lib/zlib: unpoison DFLTCC output buffers 2024-07-03 19:30:23 -07:00
Makefile zlib: move EXPORT_SYMBOL() and MODULE_LICENSE() out of dfltcc_syms.c 2020-12-29 15:36:49 -08:00