The btrfs_get_subvol_name_from_objectid() function never
returns NULL, it returns error pointers. Update the check
accordinglingly to prevent an Oops.
Fixes: ca346708eb17 ("btrfs: don't show full path of bind mounts in subvol=")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
fs/btrfs/super.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 53639de3a064..e529ddb35b87 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -1475,7 +1475,7 @@ static int btrfs_show_options(struct seq_file *seq, struct dentry *dentry)
BTRFS_I(d_inode(dentry))->root->root_key.objectid);
subvol_name = btrfs_get_subvol_name_from_objectid(info,
BTRFS_I(d_inode(dentry))->root->root_key.objectid);
- if (subvol_name) {
+ if (!IS_ERR(subvol_name)) {
seq_puts(seq, ",subvol=");
seq_escape(seq, subvol_name, " \t\n\\");
kfree(subvol_name);
--
2.27.0
