Commit aea05eb5 authored by Anton Ivanov's avatar Anton Ivanov Committed by Richard Weinberger

um: Fix for a possible OOPS in ubd initialization

If the ubd device failed to allocate a queue during
initialization it tried call blk_cleanup_queue resulting
in an oops.

This patch simplifies the cleanup logic and ensures that
blk_queue_cleanup is called only if there is a valid queue.
Reported-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarAnton Ivanov <anton.ivanov@cambridgegreys.com>
Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
parent df20af1e
......@@ -938,7 +938,7 @@ static int ubd_add(int n, char **error_out)
ubd_dev->queue = blk_mq_init_queue(&ubd_dev->tag_set);
if (IS_ERR(ubd_dev->queue)) {
err = PTR_ERR(ubd_dev->queue);
goto out_cleanup;
goto out_cleanup_tags;
}
ubd_dev->queue->queuedata = ubd_dev;
......@@ -968,7 +968,7 @@ static int ubd_add(int n, char **error_out)
out_cleanup_tags:
blk_mq_free_tag_set(&ubd_dev->tag_set);
out_cleanup:
if (!(IS_ERR(ubd_dev->queue)))
blk_cleanup_queue(ubd_dev->queue);
goto out;
}
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment