Unverified Commit 5b481526 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!14945 btrfs: avoid NULL pointer dereference if no valid extent tree 

Merge Pull Request from: @ci-robot 
 
PR sync from: Yifan Qiao <qiaoyifan4@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/LYPTBIHJ2WNEKZNR2QZAVALOLH2PIABK/ 
 
https://gitee.com/src-openeuler/kernel/issues/IBJ6RT 
 
Link:https://gitee.com/openeuler/kernel/pulls/14945

 

Reviewed-by: default avatarZhang Peng <zhangpeng362@huawei.com>
Signed-off-by: default avatarZhang Peng <zhangpeng362@huawei.com>
parents ed17ddff 467f4fd5

fs/btrfs/scrub.c

+4 −0
Original line number Diff line number Diff line
@@ -1538,6 +1538,10 @@ static int scrub_find_fill_first_stripe(struct btrfs_block_group *bg, 
	u64 extent_gen;

	int ret;



	if (unlikely(!extent_root)) {

		btrfs_err(fs_info, "no valid extent root for scrub");

		return -EUCLEAN;

	}

	memset(stripe->sectors, 0, sizeof(struct scrub_sector_verification) *

				   stripe->nr_sectors);

	scrub_stripe_reset_bitmaps(stripe);