Commit 8b07a65a authored Oct 17, 2019 by yangerkun Committed by Jens Axboe Oct 17, 2019

io_uring: fix logic error in io_timeout



If ctx->cached_sq_head < nxt_sq_head, we should add UINT_MAX to tmp, not
tmp_nxt.

Fixes: 5da0fb1a ("io_uring: consider the overflow of sequence for timeout req")
Signed-off-by: yangerkun <yangerkun@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent 491381ce

fs/io_uring.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1949,7 +1949,7 @@ static int io_timeout(struct io_kiocb req, const struct io_uring_sqe sqe)
		* once there is some timeout req still be valid.
		*/
		if (ctx->cached_sq_head < nxt_sq_head)
		tmp_nxt += UINT_MAX;
		tmp += UINT_MAX;

		if (tmp >= tmp_nxt)
		break;