io_uring: add missing finish_wait() in io_sq_thread()

Hillf Danton · axboe · commit 10bea96dcc13 · 2020-04-01T07:02:55.000-06:00
Add it to pair with prepare_to_wait() in an attempt to avoid anything weird in the field. Fixes: b41e985 ("io_uring: add per-task callback handler") Reported-by: syzbot+0c3370f235b74b3cfd97@syzkaller.appspotmail.com Signed-off-by: Hillf Danton <hdanton@sina.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/fs/io_uring.c b/fs/io_uring.c
@@ -5968,6 +5968,7 @@ static int io_sq_thread(void *data)
 				}
 				if (current->task_works) {
 					task_work_run();
+					finish_wait(&ctx->sqo_wait, &wait);
 					continue;
 				}
 				if (signal_pending(current))

Original file line number	Diff line number	Diff line change
`@@ -5968,6 +5968,7 @@ static int io_sq_thread(void *data)`
`5968`	`5968`	`}`
`5969`	`5969`	`if (current->task_works) {`
`5970`	`5970`	`task_work_run();`
	`5971`	`+ finish_wait(&ctx->sqo_wait, &wait);`
`5971`	`5972`	`continue;`
`5972`	`5973`	`}`
`5973`	`5974`	`if (signal_pending(current))`