Commit 8f71f3e0 authored by Liu Bo's avatar Liu Bo Committed by Josef Bacik
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Btrfs: check for NULL pointer in updating reloc roots 



Add a check for NULL pointer to avoid invalid reference.

Signed-off-by: default avatarLiu Bo <bo.li.liu@oracle.com>
Signed-off-by: default avatarJosef Bacik <jbacik@fusionio.com>
parent 00d71c9c

fs/btrfs/relocation.c

+2 −0
Original line number Diff line number Diff line
@@ -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) {