Unverified Commit c565fa97 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!14351 jfs: array-index-out-of-bounds fix in dtReadFirst 

Merge Pull Request from: @ci-robot 
 
PR sync from: Yifan Qiao <qiaoyifan4@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/TS5GGGEUUJ4GIFJBGNCF3C5CFVPY5G3S/ 
 
https://gitee.com/src-openeuler/kernel/issues/IBEAP0 
 
Link:https://gitee.com/openeuler/kernel/pulls/14351

 

Reviewed-by: default avatarLi Nan <linan122@huawei.com>
Signed-off-by: default avatarLi Nan <linan122@huawei.com>
parents b5c230e2 c4b57287

fs/jfs/jfs_dtree.c

+7 −0
Original line number Diff line number Diff line
@@ -3384,6 +3384,13 @@ static int dtReadFirst(struct inode *ip, struct btstack * btstack) 


		/* get the leftmost entry */

		stbl = DT_GETSTBL(p);



		if (stbl[0] < 0 || stbl[0] > 127) {

			DT_PUTPAGE(mp);

			jfs_error(ip->i_sb, "stbl[0] out of bound\n");

			return -EIO;

		}



		xd = (pxd_t *) & p->slot[stbl[0]];



		/* get the child page block address */