From: Dan Carpenter <dan.carpenter@oracle.com>
To: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>,
Hannes Reinecke <hare@suse.de>,
Bart Van Assche <bart.vanassche@sandisk.com>,
Johannes Thumshirn <jthumshirn@suse.de>,
Ewan Milne <emilne@redhat.com>,
linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel-janitors@vger.kernel.org
Subject: [patch v2] scsi_dh_alua: uninitialized variable in alua_rtpg()
Date: Thu, 14 Apr 2016 18:20:34 +0000 [thread overview]
Message-ID: <20160414182034.GA32469@mwanda> (raw)
In-Reply-To: <570FBB0E.9030902@sandisk.com>
It's possible to use "err" without initializing it. If it happens to be
a 2 which is SCSI_DH_RETRY then that could cause a bug. Bart Van Assche
pointed out that we should probably re-initialize it for every iteration
through the retry loop.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
v2: The first version just initialized it at the start of the function.
diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c
index 8eaed05..a655cf2 100644
--- a/drivers/scsi/device_handler/scsi_dh_alua.c
+++ b/drivers/scsi/device_handler/scsi_dh_alua.c
@@ -532,6 +532,7 @@ static int alua_rtpg(struct scsi_device *sdev, struct alua_port_group *pg)
return SCSI_DH_DEV_TEMP_BUSY;
retry:
+ err = 0;
retval = submit_rtpg(sdev, buff, bufflen, &sense_hdr, pg->flags);
if (retval) {
WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com>
To: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>,
Hannes Reinecke <hare@suse.de>,
Bart Van Assche <bart.vanassche@sandisk.com>,
Johannes Thumshirn <jthumshirn@suse.de>,
Ewan Milne <emilne@redhat.com>,
linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel-janitors@vger.kernel.org
Subject: [patch v2] scsi_dh_alua: uninitialized variable in alua_rtpg()
Date: Thu, 14 Apr 2016 21:20:34 +0300 [thread overview]
Message-ID: <20160414182034.GA32469@mwanda> (raw)
In-Reply-To: <570FBB0E.9030902@sandisk.com>
It's possible to use "err" without initializing it. If it happens to be
a 2 which is SCSI_DH_RETRY then that could cause a bug. Bart Van Assche
pointed out that we should probably re-initialize it for every iteration
through the retry loop.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
v2: The first version just initialized it at the start of the function.
diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c
index 8eaed05..a655cf2 100644
--- a/drivers/scsi/device_handler/scsi_dh_alua.c
+++ b/drivers/scsi/device_handler/scsi_dh_alua.c
@@ -532,6 +532,7 @@ static int alua_rtpg(struct scsi_device *sdev, struct alua_port_group *pg)
return SCSI_DH_DEV_TEMP_BUSY;
retry:
+ err = 0;
retval = submit_rtpg(sdev, buff, bufflen, &sense_hdr, pg->flags);
if (retval) {
next prev parent reply other threads:[~2016-04-14 18:20 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-11 10:17 [patch] scsi_dh_alua: uninitialized variable in alua_check_vpd() Dan Carpenter
2016-03-11 10:17 ` Dan Carpenter
2016-03-11 10:50 ` Hannes Reinecke
2016-03-11 10:50 ` Hannes Reinecke
2016-03-11 10:50 ` Hannes Reinecke
2016-03-11 11:19 ` [patch v2] " Dan Carpenter
2016-03-11 11:19 ` Dan Carpenter
2016-03-11 11:48 ` Hannes Reinecke
2016-03-11 11:48 ` Hannes Reinecke
2016-03-11 11:48 ` Hannes Reinecke
2016-03-11 14:40 ` Manoj Kumar
2016-03-11 14:40 ` Manoj Kumar
2016-03-14 20:02 ` Martin K. Petersen
2016-03-14 20:02 ` Martin K. Petersen
2016-03-11 11:19 ` [patch] " Dan Carpenter
2016-03-11 11:19 ` Dan Carpenter
2016-04-14 9:39 ` [patch] scsi_dh_alua: uninitialized variable in alua_rtpg() Dan Carpenter
2016-04-14 9:39 ` Dan Carpenter
2016-04-14 15:45 ` Bart Van Assche
2016-04-14 15:45 ` Bart Van Assche
2016-04-14 15:45 ` Bart Van Assche
2016-04-14 18:20 ` Dan Carpenter [this message]
2016-04-14 18:20 ` [patch v2] " Dan Carpenter
2016-04-14 18:55 ` Bart Van Assche
2016-04-14 18:55 ` Bart Van Assche
2016-04-14 18:55 ` Bart Van Assche
2016-04-15 5:59 ` Hannes Reinecke
2016-04-15 5:59 ` Hannes Reinecke
2016-04-15 5:59 ` Hannes Reinecke
2016-04-15 20:26 ` Martin K. Petersen
2016-04-15 20:26 ` Martin K. Petersen
2016-04-14 18:20 ` [patch] " Dan Carpenter
2016-04-14 18:20 ` Dan Carpenter
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