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| author | Will Deacon <will.deacon@arm.com> | 2019-04-10 12:49:11 +0200 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2019-04-26 14:57:49 +0200 |
| commit | 8e4e0ac02b449297b86498ac24db5786ddd9f647 (patch) | |
| tree | fb89e32a00cffd6f64c652571bd51aa783472c4a /Documentation/robust-futexes.txt | |
| parent | arm64: futex: Bound number of LDXR/STXR loops in FUTEX_WAKE_OP (diff) | |
| download | linux-8e4e0ac02b449297b86498ac24db5786ddd9f647.tar.xz linux-8e4e0ac02b449297b86498ac24db5786ddd9f647.zip | |
arm64: futex: Avoid copying out uninitialised stack in failed cmpxchg()
Returning an error code from futex_atomic_cmpxchg_inatomic() indicates
that the caller should not make any use of *uval, and should instead act
upon on the value of the error code. Although this is implemented
correctly in our futex code, we needlessly copy uninitialised stack to
*uval in the error case, which can easily be avoided.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'Documentation/robust-futexes.txt')
0 files changed, 0 insertions, 0 deletions