inode_tree_del() will move the tree root into the dead root list, and then the tree will be destroyed by the cleaner. So if we remove the delayed node which is cached in the inode after inode_tree_del(), we may access a freed tree root. Fix it. Signed-off-by: Miao Xie <miaox@xxxxxxxxxxxxxx> --- fs/btrfs/inode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 1669c3b..7f6e78a 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -4723,6 +4723,7 @@ void btrfs_evict_inode(struct inode *inode) btrfs_end_transaction(trans, root); btrfs_btree_balance_dirty(root); no_delete: + btrfs_remove_delayed_node(inode); clear_inode(inode); return; } @@ -7978,7 +7979,6 @@ void btrfs_destroy_inode(struct inode *inode) inode_tree_del(inode); btrfs_drop_extent_cache(inode, 0, (u64)-1, 0); free: - btrfs_remove_delayed_node(inode); call_rcu(&inode->i_rcu, btrfs_i_callback); } -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
