iommu/io-pgtable-arm: Ensure we free the final level on teardown

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When tearing down page tables, we return early for the final level
since we know that we won't have any table pointers to follow.
Unfortunately, this also means that we forget to free the final level,
so we end up leaking memory.

Fix the issue by always freeing the current level, but just don't bother
to iterate over the ptes if we're at the final level.

Cc: <stable@vger.kernel.org>
Reported-by: Zhang Bo <zhangbo_a@xiaomi.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

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This commit is contained in:

Will Deacon 2015-12-15 16:08:12 +00:00

parent 6380be0535

commit 12c2ab0957

1 changed files with 6 additions and 5 deletions

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drivers/iommu/io-pgtable-arm.c

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