From: Wang Shilong <[email protected]> I hit a BUG_ON() when inserting reloc root into rc->reloc_root_tree.rb_root, the fact is block bytenr has been inserted before, this is really a redicious bug, the reason is that we freed root node after we have allocated root node block,and this block bytenr will be reused and then oops happens.
Signed-off-by: Wang Shilong <[email protected]> --- fs/btrfs/relocation.c | 1 - 1 file changed, 1 deletion(-) diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index ce459a7..4dc7f26 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -1361,7 +1361,6 @@ static struct btrfs_root *create_reloc_root(struct btrfs_trans_handle *trans, } btrfs_tree_unlock(eb); - free_extent_buffer(eb); ret = btrfs_insert_root(trans, root->fs_info->tree_root, &root_key, root_item); -- 1.8.4 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
