Qgroup id 0 is a special number, we should set the id of a qgroup to 0.
Fix it.
Signed-off-by: Miao Xie <mi...@cn.fujitsu.com>
---
fs/btrfs/ioctl.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 8e5b7fa..922a33a 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -3574,6 +3574,11 @@ static long btrfs_ioctl_qgroup_create(struct btrfs_root
*root, void __user *arg)
if (IS_ERR(sa))
return PTR_ERR(sa);
+ if (!sa->qgroupid) {
+ ret = -EINVAL;
+ goto out;
+ }
+
trans = btrfs_join_transaction(root);
if (IS_ERR(trans)) {
ret = PTR_ERR(trans);
--
1.7.11.7
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