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| author | Jens Axboe <[email protected]> | 2021-09-13 19:08:51 +0000 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2021-09-14 01:44:29 +0000 |
| commit | 41d3a6bd1d37149b18331fc4bb789c5456a7aeb0 (patch) | |
| tree | 41f4a7141c942781867487cb0cd7104fd7b386ce /lib/netdev-notifier-error-inject.c | |
| parent | io-wq: provide IO_WQ_* constants for IORING_REGISTER_IOWQ_MAX_WORKERS arg items (diff) | |
| download | kernel-41d3a6bd1d37149b18331fc4bb789c5456a7aeb0.tar.gz kernel-41d3a6bd1d37149b18331fc4bb789c5456a7aeb0.zip | |
io_uring: pin SQPOLL data before unlocking ring lock
We need to re-check sqd->thread after we've dropped the lock. Pin
the sqd before doing the lockdep lock dance, and check if the thread
is alive after that. It's either NULL or alive, as the SQPOLL thread
cannot exit without holding the same sqd->lock.
Reported-and-tested-by: [email protected]
Fixes: fa84693b3c89 ("io_uring: ensure IORING_REGISTER_IOWQ_MAX_WORKERS works with SQPOLL")
Signed-off-by: Jens Axboe <[email protected]>
Diffstat (limited to 'lib/netdev-notifier-error-inject.c')
0 files changed, 0 insertions, 0 deletions