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| author | Jens Axboe <axboe@kernel.dk> | 2022-03-18 11:28:13 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-04-08 14:40:03 +0200 |
| commit | 509565faed7e6a4d27b9df2b8f7ffeedae0067aa (patch) | |
| tree | 80afbcbb3b28c63392221e6b37f861bcd0b4b588 /kernel | |
| parent | 44a77e52bd791ffea565c49d7a5322bb9ea21ae8 (diff) | |
io_uring: terminate manual loop iterator loop correctly for non-vecs
[ Upstream commit 5e929367468c8f97cd1ffb0417316cecfebef94b ]
The fix for not advancing the iterator if we're using fixed buffers is
broken in that it can hit a condition where we don't terminate the loop.
This results in io-wq looping forever, asking to read (or write) 0 bytes
for every subsequent loop.
Reported-by: Joel Jaeschke <joel.jaeschke@gmail.com>
Link: https://github.com/axboe/liburing/issues/549
Fixes: 16c8d2df7ec0 ("io_uring: ensure symmetry in handling iter types in loop_rw_iter()")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions