s390/vmem: fix empty page tables cleanup under KASAN

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[ Upstream commit 108303b0a2 ]

Commit b9ff81003c ("s390/vmem: cleanup empty page tables") introduced
empty page tables cleanup in vmem code, but when the kernel is built
with KASAN enabled the code has no effect due to wrong KASAN shadow
memory intersection condition, which effectively ignores any memory
range below KASAN shadow. Fix intersection condition to make code
work as anticipated.

Fixes: b9ff81003c ("s390/vmem: cleanup empty page tables")
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Vasily Gorbik 2023-01-28 17:35:12 +01:00 • committed by Greg Kroah-Hartman

parent 9e1e58525d

commit 76b53cd95d

1 changed files with 3 additions and 3 deletions

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arch/s390/mm/vmem.c

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