linux-kernel - [PATCH] scsi: myrs: Fix uninitialized variable

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Date:   Thu, 9 May 2019 23:22:47 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <hare@...nel.org>, <jejb@...ux.ibm.com>,
        <martin.petersen@...cle.com>
CC:     <linux-kernel@...r.kernel.org>, <linux-scsi@...r.kernel.org>,
        YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH] scsi: myrs: Fix uninitialized variable

drivers/scsi/myrs.c: In function 'myrs_log_event':
drivers/scsi/myrs.c:821:24: warning: 'sshdr.sense_key' may be used uninitialized in this function [-Wmaybe-uninitialized]
  struct scsi_sense_hdr sshdr;

If ev->ev_code is not 0x1C, sshdr.sense_key may
be used uninitialized. Fix this by initializing
variable 'sshdr' to 0.

Fixes: 77266186397c ("scsi: myrs: Add Mylex RAID controller (SCSI interface)")
Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
 drivers/scsi/myrs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/myrs.c b/drivers/scsi/myrs.c
index b8d54ef..eb0dd56 100644
--- a/drivers/scsi/myrs.c
+++ b/drivers/scsi/myrs.c
@@ -818,7 +818,7 @@ static void myrs_log_event(struct myrs_hba *cs, struct myrs_event *ev)
 	unsigned char ev_type, *ev_msg;
 	struct Scsi_Host *shost = cs->host;
 	struct scsi_device *sdev;
-	struct scsi_sense_hdr sshdr;
+	struct scsi_sense_hdr sshdr = {0};
 	unsigned char sense_info[4];
 	unsigned char cmd_specific[4];
 
-- 
2.7.4