linux-kernel - [PATCH 13/27] staging: lustre: fix api-ni.c issues found by Klocwork Insight tool

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Date:	Wed,  2 Mar 2016 17:01:56 -0500
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>,
	Dmitry Eremin <dmitry.eremin@...el.com>
Subject: [PATCH 13/27] staging: lustre: fix api-ni.c issues found by Klocwork Insight tool

From: Dmitry Eremin <dmitry.eremin@...el.com>

Pointer 'ni' checked for NULL at line 1569 may be passed to
function and may be dereferenced there by passing argument 1 to
function 'lnet_ni_notify_locked' at line 1621.

Signed-off-by: Dmitry Eremin <dmitry.eremin@...el.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4629
Reviewed-on: http://review.whamcloud.com/9386
Reviewed-by: John L. Hammond <john.hammond@...el.com>
Reviewed-by: Isaac Huang <he.huang@...el.com>
Reviewed-by: Oleg Drokin <oleg.drokin@...el.com>
---
 drivers/staging/lustre/lnet/lnet/router.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/staging/lustre/lnet/lnet/router.c b/drivers/staging/lustre/lnet/lnet/router.c
index 9543ba3..6a44601 100644
--- a/drivers/staging/lustre/lnet/lnet/router.c
+++ b/drivers/staging/lustre/lnet/lnet/router.c
@@ -1800,7 +1800,8 @@ lnet_notify(lnet_ni_t *ni, lnet_nid_t nid, int alive, unsigned long when)
 
 	lnet_notify_locked(lp, !ni, alive, when);
 
-	lnet_ni_notify_locked(ni, lp);
+	if (ni)
+		lnet_ni_notify_locked(ni, lp);
 
 	lnet_peer_decref_locked(lp);
 
-- 
1.7.1