Andrey Ryabinin 4b5d4bdfd1
compiler.h: Add read_word_at_a_time() function. ...
[ Upstream commit 7f1e541fc8d57a143dd5df1d0a1276046e08c083 ]
Sometimes we know that it's safe to do potentially out-of-bounds access
because we know it won't cross a page boundary. Still, KASAN will
report this as a bug.
Add read_word_at_a_time() function which is supposed to be used in such
cases. In read_word_at_a_time() KASAN performs relaxed check - only the
first byte of access is validated.
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com >
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org >
Signed-off-by: Sasha Levin <sashal@kernel.org >
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