Commit 0eeff236 authored by Liu Bo's avatar Liu Bo Committed by Chris Mason

Btrfs: fix use-after-free in btrfs_replay_log

@log_root_tree should not be referenced after kfree.
Signed-off-by: default avatarLiu Bo <bo.li.liu@oracle.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.cz>
Reported-by: default avatarJulia Lawall <julia.lawall@lip6.fr>
Signed-off-by: default avatarChris Mason <clm@fb.com>
parent 9a4e7276
......@@ -2321,8 +2321,9 @@ static int btrfs_replay_log(struct btrfs_fs_info *fs_info,
fs_info->generation + 1);
if (IS_ERR(log_tree_root->node)) {
printk(KERN_ERR "BTRFS: failed to read log tree\n");
ret = PTR_ERR(log_tree_root->node);
kfree(log_tree_root);
return PTR_ERR(log_tree_root->node);
return ret;
} else if (!extent_buffer_uptodate(log_tree_root->node)) {
printk(KERN_ERR "BTRFS: failed to read log tree\n");
free_extent_buffer(log_tree_root->node);
......
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