This is a note to let you know that I've just added the patch titled
9p/trans_virtio: Remove sysfs file on probe failure
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
9p-trans_virtio-remove-sysfs-file-on-probe-failure.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f997ea3b7afc108eb9761f321b57de2d089c7c48 Mon Sep 17 00:00:00 2001
From: Xie Yongji <xieyongji@xxxxxxxxxxxxx>
Date: Mon, 17 May 2021 16:35:57 +0800
Subject: 9p/trans_virtio: Remove sysfs file on probe failure
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
@@ -602,7 +602,7 @@ 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;
@@ -620,6 +620,8 @@ 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:
Patches currently in stable-queue which might be from xieyongji@xxxxxxxxxxxxx are
queue-4.9/9p-trans_virtio-remove-sysfs-file-on-probe-failure.patch
