linux-kernel - [PATCH 012/124] staging: lustre: lmv: fix some byte order issues

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1474231143-4061-13-git-send-email-jsimmons@infradead.org>
Date:   Sun, 18 Sep 2016 16:37:11 -0400
From:   James Simmons <jsimmons@...radead.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        devel@...verdev.osuosl.org,
        Andreas Dilger <andreas.dilger@...el.com>,
        Oleg Drokin <oleg.drokin@...el.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Lustre Development List <lustre-devel@...ts.lustre.org>,
        "John L. Hammond" <john.hammond@...el.com>,
        James Simmons <jsimmons@...radead.org>
Subject: [PATCH 012/124] staging: lustre: lmv: fix some byte order issues

From: John L. Hammond <john.hammond@...el.com>

In the handler for LL_IOC_LMV_GETSTRIPE convert stripe FIDs from
little to CPU endian when unpacking lmv_user_md. In lmv_unpack_md_v1()
fix a double conversion of the stripe count.

Signed-off-by: John L. Hammond <john.hammond@...el.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5342
Reviewed-on: http://review.whamcloud.com/11106
Reviewed-by: Dmitry Eremin <dmitry.eremin@...el.com>
Reviewed-by: Jian Yu <jian.yu@...el.com>
Reviewed-by: Oleg Drokin <oleg.drokin@...el.com>
Signed-off-by: James Simmons <jsimmons@...radead.org>
---
 drivers/staging/lustre/lustre/llite/dir.c   |    8 ++++----
 drivers/staging/lustre/lustre/lmv/lmv_obd.c |    2 +-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/staging/lustre/lustre/llite/dir.c b/drivers/staging/lustre/lustre/llite/dir.c
index c97a4a0..97815cf 100644
--- a/drivers/staging/lustre/lustre/llite/dir.c
+++ b/drivers/staging/lustre/lustre/llite/dir.c
@@ -1252,16 +1252,16 @@ lmv_out_free:
 		tmp->lum_stripe_count = 0;
 		tmp->lum_stripe_offset = mdt_index;
 		for (i = 0; i < stripe_count; i++) {
-			struct lu_fid   *fid;
+			struct lu_fid fid;
 
-			fid = &lmm->lmv_md_v1.lmv_stripe_fids[i];
-			mdt_index = ll_get_mdt_idx_by_fid(sbi, fid);
+			fid_le_to_cpu(&fid, &lmm->lmv_md_v1.lmv_stripe_fids[i]);
+			mdt_index = ll_get_mdt_idx_by_fid(sbi, &fid);
 			if (mdt_index < 0) {
 				rc = mdt_index;
 				goto out_tmp;
 			}
 			tmp->lum_objects[i].lum_mds = mdt_index;
-			tmp->lum_objects[i].lum_fid = *fid;
+			tmp->lum_objects[i].lum_fid = fid;
 			tmp->lum_stripe_count++;
 		}
 
diff --git a/drivers/staging/lustre/lustre/lmv/lmv_obd.c b/drivers/staging/lustre/lustre/lmv/lmv_obd.c
index 11dcbb6..e1fac0b 100644
--- a/drivers/staging/lustre/lustre/lmv/lmv_obd.c
+++ b/drivers/staging/lustre/lustre/lmv/lmv_obd.c
@@ -2909,7 +2909,7 @@ static int lmv_unpack_md_v1(struct obd_export *exp, struct lmv_stripe_md *lsm,
 	       lsm->lsm_md_hash_type, lsm->lsm_md_layout_version);
 
 	stripe_count = le32_to_cpu(lmm1->lmv_stripe_count);
-	for (i = 0; i < le32_to_cpu(stripe_count); i++) {
+	for (i = 0; i < stripe_count; i++) {
 		fid_le_to_cpu(&lsm->lsm_md_oinfo[i].lmo_fid,
 			      &lmm1->lmv_stripe_fids[i]);
 		rc = lmv_fld_lookup(lmv, &lsm->lsm_md_oinfo[i].lmo_fid,
-- 
1.7.1