Btrfs: check for NULL pointer in updating reloc roots · 8f71f3e0e4 - Gogs

Btrfs: check for NULL pointer in updating reloc roots

Add a check for NULL pointer to avoid invalid reference.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>

Liu Bo 12 years ago

parent

00d71c9c17

commit

8f71f3e0e4

1 changed files with 2 additions and 0 deletions

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							+ 2
							
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fs/btrfs/relocation.c
							 
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				@@ -1269,6 +1269,8 @@ static int __update_reloc_root(struct btrfs_root *root, int del)
			
				 	}
			
				 	spin_unlock(&rc->reloc_root_tree.lock);
			
				+	if (!node)
			
				+		return 0;
			
				 	BUG_ON((struct btrfs_root *)node->data != root);
			
				 	if (!del) {