Commit 6379ef9f authored Jun 06, 2013 by Naohiro Aota Committed by Chris Mason Jun 08, 2013

btrfs: Drop inode if inode root is NULL



There is a path where btrfs_drop_inode() is called with its inode's root
is NULL: In btrfs_new_inode(), when btrfs_set_inode_index() fails,
iput() is called. We should handle this case before taking look at the
root->root_item.

Signed-off-by: Naohiro Aota <naota@elisp.net>
Reviewed-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

parent 7b5ff90e

fs/btrfs/inode.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -8011,6 +8011,9 @@ int btrfs_drop_inode(struct inode *inode)
		{
		struct btrfs_root *root = BTRFS_I(inode)->root;

		if (root == NULL)
		return 1;

		/* the snap/subvol tree is on deleting */
		if (btrfs_root_refs(&root->root_item) == 0 &&
		root != root->fs_info->tree_root)