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Commit 23291a04 authored by Dan Carpenter's avatar Dan Carpenter Committed by Chris Mason
Browse files

Btrfs: fix error handling in __add_reloc_root() 



We dereferenced "node" in the error message after freeing it.  Also
btrfs_panic() can return so we should return an error code instead of
continuing.

Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
parent 44c44af2

fs/btrfs/relocation.c

+2 −1
Original line number Diff line number Diff line
@@ -1239,10 +1239,11 @@ static int __must_check __add_reloc_root(struct btrfs_root *root) 
			      node->bytenr, &node->rb_node);

	spin_unlock(&rc->reloc_root_tree.lock);

	if (rb_node) {

		kfree(node);

		btrfs_panic(root->fs_info, -EEXIST, "Duplicate root found "

			    "for start=%llu while inserting into relocation "

			    "tree\n");

		kfree(node);

		return -EEXIST;

	}



	list_add_tail(&root->root_list, &rc->reloc_roots);