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(parent: e4b4a13) | patch
io-wq: ensure all pending work is canceled on exit
authorJens Axboe <axboe@kernel.dk>
Wed, 3 Mar 2021 22:47:04 +0000 (15:47 -0700)
committerJens Axboe <axboe@kernel.dk>
Thu, 4 Mar 2021 13:38:10 +0000 (06:38 -0700)
commitf01272541d2cd7b7f24909d63ea2b028a6a66293
tree94b31ecf630b34f0bb9c686aced0dabedaac470atree | snapshot
parente4b4a13f494120c475580927864cc1dd96f595d1commit | diff
io-wq: ensure all pending work is canceled on exit

If we race on shutting down the io-wq, then we should ensure that any
work that was queued after workers shutdown is canceled. Harden the
add work check a bit too, checking for IO_WQ_BIT_EXIT and cancel if
it's set.

Add a WARN_ON() for having any work before we kill the io-wq context.

Reported-by: syzbot+91b4b56ead187d35c9d3@syzkaller.appspotmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
fs/io-wq.c diff | blob | history
Domain: System / Kernel;