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authorJens Axboe <axboe@kernel.dk>2021-03-05 16:14:08 +0100
committerJens Axboe <axboe@kernel.dk>2021-03-05 16:44:09 +0100
commit09ca6c40c2024211657fdb2c50522a355610c3b7 (patch)
tree5f7e881811b2efdd4b8ba1240f61caaaea7ee0b1 /drivers/hwmon/emc6w201.c
parentio_uring: clear IOCB_WAITQ for non -EIOCBQUEUED return (diff)
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io-wq: kill hashed waitqueue before manager exits
If we race with shutting down the io-wq context and someone queueing a hashed entry, then we can exit the manager with it armed. If it then triggers after the manager has exited, we can have a use-after-free where io_wqe_hash_wake() attempts to wake a now gone manager process. Move the killing of the hashed write queue into the manager itself, so that we know we've killed it before the task exits. Fixes: e941894eae31 ("io-wq: make buffered file write hashed work map per-ctx") Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/hwmon/emc6w201.c')
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