Unverified Commit ef5e9d04 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!11706 btrfs: replace BUG_ON() with error handling at update_ref_for_cow() 

Merge Pull Request from: @ci-robot 
 
PR sync from: Yifan Qiao <qiaoyifan4@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/XD7W72UM6ARDM4XCLL5YQ2XOVB6FWLNI/ 
 
https://gitee.com/src-openeuler/kernel/issues/IARX1T 
 
Link:https://gitee.com/openeuler/kernel/pulls/11706

 

Reviewed-by: default avatarYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: default avatarYang Yingliang <yangyingliang@huawei.com>
parents 6f47baa3 5763226a

fs/btrfs/ctree.c

+10 −2
Original line number Diff line number Diff line
@@ -896,8 +896,16 @@ static noinline int update_ref_for_cow(struct btrfs_trans_handle *trans, 
	}



	owner = btrfs_header_owner(buf);

	BUG_ON(owner == BTRFS_TREE_RELOC_OBJECTID &&

	       !(flags & BTRFS_BLOCK_FLAG_FULL_BACKREF));

	if (unlikely(owner == BTRFS_TREE_RELOC_OBJECTID &&

		     !(flags & BTRFS_BLOCK_FLAG_FULL_BACKREF))) {

		btrfs_crit(fs_info,

"found tree block at bytenr %llu level %d root %llu refs %llu flags %llx without full backref flag set",

			   buf->start, btrfs_header_level(buf),

			   root->root_key.objectid, refs, flags);

		ret = -EUCLEAN;

		btrfs_abort_transaction(trans, ret);

		return ret;

	}



	if (refs > 1) {

		if ((owner == root->root_key.objectid ||