btrfs: fix transaction handle leak after verity rollback failure

[platform/kernel/linux-rpi.git] / fs / btrfs / verity.c

diff --git a/fs/btrfs/verity.c b/fs/btrfs/verity.c
index 28d443d..4968535 100644 (file)
--- a/fs/btrfs/verity.c
+++ b/fs/btrfs/verity.c
@@ -451,7 +451,7 @@ static int del_orphan(struct btrfs_trans_handle *trans, struct btrfs_inode *inod
  */
 static int rollback_verity(struct btrfs_inode *inode)
 {
-       struct btrfs_trans_handle *trans;
+       struct btrfs_trans_handle *trans = NULL;
        struct btrfs_root *root = inode->root;
        int ret;
 
@@ -473,6 +473,7 @@ static int rollback_verity(struct btrfs_inode *inode)
        trans = btrfs_start_transaction(root, 2);
        if (IS_ERR(trans)) {
                ret = PTR_ERR(trans);
+               trans = NULL;
                btrfs_handle_fs_error(root->fs_info, ret,
                        "failed to start transaction in verity rollback %llu",
                        (u64)inode->vfs_inode.i_ino);
@@ -490,8 +491,9 @@ static int rollback_verity(struct btrfs_inode *inode)
                btrfs_abort_transaction(trans, ret);
                goto out;
        }
-       btrfs_end_transaction(trans);
 out:
+       if (trans)
+               btrfs_end_transaction(trans);
        return ret;
 }