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9p/trans_virtio: Remove sysfs file on probe failure 

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@bytedance.com
Fixes: 86c8437383 ("net/9p: Add sysfs mount_tag file for virtio 9P device")
Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Xie Yongji 2021-05-17 16:35:57 +08:00 committed by Greg Kroah-Hartman
parent c3b45ea0a3
commit b40301607c
1 changed files with 3 additions and 1 deletions
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4
net/9p/trans_virtio.c
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@ -605,7 +605,7 @@ static int p9_virtio_probe(struct virtio_device *vdev)
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;
@ -623,6 +623,8 @@ static int p9_virtio_probe(struct virtio_device *vdev)
return 0;
out_remove_file:
sysfs_remove_file(&vdev->dev.kobj, &dev_attr_mount_tag.attr);
out_free_tag:
kfree(tag);
out_free_vq: