Commit ea1164e5 authored by Pavel Begunkov's avatar Pavel Begunkov Committed by Jens Axboe
Browse files

io_uring: fix NULL mm in io_poll_task_func() 



io_poll_task_func() hand-coded link submission forgetting to set
TASK_RUNNING, acquire mm, etc. Call existing helper for that,
i.e. __io_req_task_submit().

Signed-off-by: default avatarPavel Begunkov <asml.silence@gmail.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent cf2f5425

fs/io_uring.c

+2 −7
Original line number Diff line number Diff line
@@ -4518,13 +4518,8 @@ static void io_poll_task_func(struct callback_head *cb) 
	struct io_kiocb *nxt = NULL;



	io_poll_task_handler(req, &nxt);

	if (nxt) {

		struct io_ring_ctx *ctx = nxt->ctx;



		mutex_lock(&ctx->uring_lock);

		__io_queue_sqe(nxt, NULL, NULL);

		mutex_unlock(&ctx->uring_lock);

	}

	if (nxt)

		__io_req_task_submit(nxt);

}



static int io_poll_double_wake(struct wait_queue_entry *wait, unsigned mode,

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