Unverified Commit ed0fbaa8 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!7670 btrfs: send: handle path ref underflow in header iterate_inode_ref() 

Merge Pull Request from: @ci-robot 
 
PR sync from: Wang Zhaolong <wangzhaolong1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/44G2H7SHAOEJ4LDHQPXZSXTJLF2P3AXF/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9QGIK 
 
Link:https://gitee.com/openeuler/kernel/pulls/7670

 

Reviewed-by: default avatarzhangyi (F) <yi.zhang@huawei.com>
Signed-off-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
parents a4456347 df5290b8

fs/btrfs/send.c

+9 −1
Original line number Diff line number Diff line
@@ -966,7 +966,15 @@ static int iterate_inode_ref(struct btrfs_root *root, struct btrfs_path *path, 
					ret = PTR_ERR(start);

					goto out;

				}

				BUG_ON(start < p->buf);

				if (unlikely(start < p->buf)) {

					btrfs_err(root->fs_info,

			"send: path ref buffer underflow for key (%llu %u %llu)",

						  found_key->objectid,

						  found_key->type,

						  found_key->offset);

					ret = -EINVAL;

					goto out;

				}

			}

			p->start = start;

		} else {