In request submission path it is possible that virtqueue is already gone due to driver->remove(). So do not access it in dev_dbg(). Use pr_debug() instead.
If virtuqueue is gone, this will result in NULL pointer deference. Signed-off-by: Vivek Goyal <[email protected]> --- fs/fuse/virtio_fs.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c index 40259368a6bd..01bbf2c0e144 100644 --- a/fs/fuse/virtio_fs.c +++ b/fs/fuse/virtio_fs.c @@ -888,10 +888,10 @@ __releases(fiq->waitq.lock) fs = fiq->priv; fc = fs->vqs[queue_id].fud->fc; - dev_dbg(&fs->vqs[queue_id].vq->vdev->dev, - "%s: opcode %u unique %#llx nodeid %#llx in.len %u out.len %u\n", - __func__, req->in.h.opcode, req->in.h.unique, req->in.h.nodeid, - req->in.h.len, fuse_len_args(req->out.numargs, req->out.args)); + pr_debug("%s: opcode %u unique %#llx nodeid %#llx in.len %u out.len %u" + "\n", __func__, req->in.h.opcode, req->in.h.unique, + req->in.h.nodeid, req->in.h.len, + fuse_len_args(req->out.numargs, req->out.args)); fpq = &fs->vqs[queue_id].fud->pq; spin_lock(&fpq->lock); -- 2.20.1
