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Ilya Leoshkevich
89f42df66c
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/[email protected] Signed-off-by: Ilya Leoshkevich <[email protected]> Reported-by: Alexander Gordeev <[email protected]> Reviewed-by: Alexander Potapenko <[email protected]> Cc: Christian Borntraeger <[email protected]> Cc: Christoph Lameter <[email protected]> Cc: David Rientjes <[email protected]> Cc: Dmitry Vyukov <[email protected]> Cc: Heiko Carstens <[email protected]> Cc: Hyeonggon Yoo <[email protected]> Cc: Joonsoo Kim <[email protected]> Cc: <[email protected]> Cc: Marco Elver <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Masami Hiramatsu (Google) <[email protected]> Cc: Pekka Enberg <[email protected]> Cc: Roman Gushchin <[email protected]> Cc: Steven Rostedt (Google) <[email protected]> Cc: Sven Schnelle <[email protected]> Cc: Vasily Gorbik <[email protected]> Cc: Vlastimil Babka <[email protected]> Signed-off-by: Andrew Morton <[email protected]>