Commit 47b228ce authored by Pavel Begunkov's avatar Pavel Begunkov Committed by Jens Axboe
Browse files

io_uring: fix unchecked error in switch_start() 



io_rsrc_node_switch_start() can fail, don't forget to check returned
error code.

Reported-by: default avatar <syzbot+a4715dd4b7c866136f79@syzkaller.appspotmail.com>
Fixes: eae071c9 ("io_uring: prepare fixed rw for dynanic buffers")
Signed-off-by: default avatarPavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/c4c06e2f3f0c8e43bd8d0a266c79055bcc6b6e60.1619693112.git.asml.silence@gmail.com


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 6224843d

fs/io_uring.c

+3 −1
Original line number Diff line number Diff line
@@ -9627,7 +9627,9 @@ static int io_uring_create(unsigned entries, struct io_uring_params *p, 
	if (ret)

		goto err;

	/* always set a rsrc node */

	io_rsrc_node_switch_start(ctx);

	ret = io_rsrc_node_switch_start(ctx);

	if (ret)

		goto err;

	io_rsrc_node_switch(ctx, NULL);



	memset(&p->sq_off, 0, sizeof(p->sq_off));