Searched hist:"52 ea806a" (Results 1 – 1 of 1) sorted by relevance
| /openbmc/linux/io_uring/ |
| H A D | io_uring.c | 52ea806a Wed Dec 21 08:05:09 CST 2022 Jens Axboe <axboe@kernel.dk> io_uring: finish waiting before flushing overflow entries
If we have overflow entries being generated after we've done the
initial flush in io_cqring_wait(), then we could be flushing them in the
main wait loop as well. If that's done after having added ourselves
to the cq_wait waitqueue, then the task state can be != TASK_RUNNING
when we enter the overflow flush.
Check for the need to overflow flush, and finish our wait cycle first
if we have to do so.
Reported-and-tested-by: syzbot+cf6ea1d6bb30a4ce10b2@syzkaller.appspotmail.com
Link: https://lore.kernel.org/io-uring/000000000000cb143a05f04eee15@google.com/
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|