fuse: fix memleak in cuse_channel_open

If cuse_send_init fails, need to fuse_conn_put cc->fc.

cuse_channel_open->fuse_conn_init->refcount_set(&fc->count, 1)
                 ->fuse_dev_alloc->fuse_conn_get
                 ->fuse_dev_free->fuse_conn_put

Fixes: cc080e9e9be1 ("fuse: introduce per-instance fuse_dev structure")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

diff --git a/fs/fuse/cuse.c b/fs/fuse/cuse.c
index 45762bb7a934e318bfb00da7dfef2349bfc0f1d0..00015d85138297b1c5e87158d75714e4a49a23dd 100644 (file)
--- a/fs/fuse/cuse.c
+++ b/fs/fuse/cuse.c
@@ -521,6 +521,7 @@ static int cuse_channel_open(struct inode *inode, struct file *file)
        rc = cuse_send_init(cc);
        if (rc) {
                fuse_dev_free(fud);
+               fuse_conn_put(&cc->fc);
                return rc;
        }
        file->private_data = fud;