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author | Robin Murphy <robin.murphy@arm.com> | 2020-01-17 15:48:39 +0000 |
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committer | Will Deacon <will@kernel.org> | 2020-01-17 16:05:50 +0000 |
commit | c2c24edb1d9c308011f5a1328563d8da8c92c849 (patch) | |
tree | 2b2438f62417db3238cb88b111fe24120fab8880 /arch/arm64/Kconfig | |
parent | arm64: Implement optimised checksum routine (diff) | |
download | linux-dev-c2c24edb1d9c308011f5a1328563d8da8c92c849.tar.xz linux-dev-c2c24edb1d9c308011f5a1328563d8da8c92c849.zip |
arm64: csum: Fix pathological zero-length calls
In validating the checksumming results of the new routine, I sadly
neglected to test its not-checksumming results. Thus it slipped through
that the one case where @buff is already dword-aligned and @len = 0
manages to defeat the tail-masking logic and behave as if @len = 8.
For a zero length it doesn't make much sense to deference @buff anyway,
so just add an early return (which has essentially zero impact on
performance).
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/Kconfig')
0 files changed, 0 insertions, 0 deletions