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| author | Stefano Garzarella <[email protected]> | 2020-02-21 15:42:16 +0000 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2020-02-21 16:16:10 +0000 |
| commit | 7143b5ac5750f404ff3a594b34fdf3fc2f99f828 (patch) | |
| tree | d6bf0edaaf6f0f994d2043d91a91644b2e6ca461 /net/unix/af_unix.c | |
| parent | io_uring: fix use-after-free by io_cleanup_req() (diff) | |
| download | kernel-7143b5ac5750f404ff3a594b34fdf3fc2f99f828.tar.gz kernel-7143b5ac5750f404ff3a594b34fdf3fc2f99f828.zip | |
io_uring: prevent sq_thread from spinning when it should stop
This patch drops 'cur_mm' before calling cond_resched(), to prevent
the sq_thread from spinning even when the user process is finished.
Before this patch, if the user process ended without closing the
io_uring fd, the sq_thread continues to spin until the
'sq_thread_idle' timeout ends.
In the worst case where the 'sq_thread_idle' parameter is bigger than
INT_MAX, the sq_thread will spin forever.
Fixes: 6c271ce2f1d5 ("io_uring: add submission polling")
Signed-off-by: Stefano Garzarella <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions