linux-kernel - [PATCH 05/48] staging/lustre: fix 'program hangs' errors

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Message-Id: <1374509230-3324-6-git-send-email-bergwolf@gmail.com>
Date:	Tue, 23 Jul 2013 00:06:26 +0800
From:	Peng Tao <bergwolf@...il.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org,
	Sebastien Buisson <sebastien.buisson@...l.net>,
	Peng Tao <tao.peng@....com>,
	Andreas Dilger <andreas.dilger@...el.com>
Subject: [PATCH 05/48] staging/lustre: fix 'program hangs' errors

From: Sebastien Buisson <sebastien.buisson@...l.net>

Fix 'program hangs' defects found by Coverity version 6.5.1:
Missing unlock (LOCK)
Returning without unlocking.

Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3054
Lustre-change: http://review.whamcloud.com/5870
Signed-off-by: Sebastien Buisson <sebastien.buisson@...l.net>
Reviewed-by: Dmitry Eremin <dmitry.eremin@...el.com>
Reviewed-by: Andreas Dilger <andreas.dilger@...el.com>
Signed-off-by: Peng Tao <tao.peng@....com>
Signed-off-by: Andreas Dilger <andreas.dilger@...el.com>
---
 drivers/staging/lustre/lnet/selftest/rpc.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/lustre/lnet/selftest/rpc.c b/drivers/staging/lustre/lnet/selftest/rpc.c
index bc1f38b..0dfc76e 100644
--- a/drivers/staging/lustre/lnet/selftest/rpc.c
+++ b/drivers/staging/lustre/lnet/selftest/rpc.c
@@ -661,8 +661,10 @@ srpc_finish_service(struct srpc_service *sv)
 
 	cfs_percpt_for_each(scd, i, sv->sv_cpt_data) {
 		spin_lock(&scd->scd_lock);
-		if (!swi_deschedule_workitem(&scd->scd_buf_wi))
+		if (!swi_deschedule_workitem(&scd->scd_buf_wi)) {
+			spin_unlock(&scd->scd_lock);
 			return 0;
+		}
 
 		if (scd->scd_buf_nposted > 0) {
 			CDEBUG(D_NET, "waiting for %d posted buffers to unlink",
-- 
1.7.9.5

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