From: Miklos Szeredi mszeredi@redhat.com
[ Upstream commit 66ab33bf6d4341574f88b511e856a73f6f2a921e ]
This can be triggered for example by adding the "-omand" mount option, which will be rejected and virtio_fs_fill_super() will return an error.
In such a case the allocations for fuse_conn and fuse_mount will leak due to s_root not yet being set and so ->put_super() not being called.
Fixes: a62a8ef9d97d ("virtio-fs: add virtiofs filesystem") Signed-off-by: Miklos Szeredi mszeredi@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/fuse/virtio_fs.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c index 21a9e534417c0..d2c0e58c6416f 100644 --- a/fs/fuse/virtio_fs.c +++ b/fs/fuse/virtio_fs.c @@ -1464,6 +1464,8 @@ static int virtio_fs_get_tree(struct fs_context *fsc) if (!sb->s_root) { err = virtio_fs_fill_super(sb, fsc); if (err) { + fuse_mount_put(fm); + sb->s_fs_info = NULL; deactivate_locked_super(sb); return err; }