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| author | Jens Axboe <axboe@kernel.dk> | 2018-04-17 17:08:52 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-04-17 17:08:52 -0600 |
| commit | 72961c4e6082be79825265d9193272b8a1634dec (patch) | |
| tree | db6b683240483097d30a95f1de6abaff2414dd55 /net | |
| parent | f4560231ec42092c6662acccabb28c6cac9f5dfb (diff) | |
| download | linux-0-day-72961c4e6082be79825265d9193272b8a1634dec.tar.gz linux-0-day-72961c4e6082be79825265d9193272b8a1634dec.tar.xz | |
bfq-iosched: ensure to clear bic/bfqq pointers when preparing request
Even if we don't have an IO context attached to a request, we still
need to clear the priv[0..1] pointers, as they could be pointing
to previously used bic/bfqq structures. If we don't do so, we'll
either corrupt memory on dispatching a request, or cause an
imbalance in counters.
Inspired by a fix from Kees.
Reported-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Reported-by: Kees Cook <keescook@chromium.org>
Cc: stable@vger.kernel.org
Fixes: aee69d78dec0 ("block, bfq: introduce the BFQ-v0 I/O scheduler as an extra scheduler")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'net')
0 files changed, 0 insertions, 0 deletions