From: Xie Yongji <xieyongji@xxxxxxxxxxxxx> commit f997ea3b7afc108eb9761f321b57de2d089c7c48 upstream. This ensures we don't leak the sysfs file if we failed to allocate chan->vc_wq during probe. Link: http://lkml.kernel.org/r/20210517083557.172-1-xieyongji@xxxxxxxxxxxxx Fixes: 86c8437383ac ("net/9p: Add sysfs mount_tag file for virtio 9P device") Signed-off-by: Xie Yongji <xieyongji@xxxxxxxxxxxxx> Signed-off-by: Dominique Martinet <asmadeus@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- net/9p/trans_virtio.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/net/9p/trans_virtio.c +++ b/net/9p/trans_virtio.c @@ -620,7 +620,7 @@ static int p9_virtio_probe(struct virtio chan->vc_wq = kmalloc(sizeof(wait_queue_head_t), GFP_KERNEL); if (!chan->vc_wq) { err = -ENOMEM; - goto out_free_tag; + goto out_remove_file; } init_waitqueue_head(chan->vc_wq); chan->ring_bufs_avail = 1; @@ -638,6 +638,8 @@ static int p9_virtio_probe(struct virtio return 0; +out_remove_file: + sysfs_remove_file(&vdev->dev.kobj, &dev_attr_mount_tag.attr); out_free_tag: kfree(tag); out_free_vq:
