From: Dan Carpenter <dan.carpenter@oracle.com>
To: Julian Andres Klode <jak@jak-linux.org>
Cc: devel@driverdev.osuosl.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
kernel-janitors@vger.kernel.org,
Rob Herring <rob.herring@calxeda.com>,
linux-tegra@vger.kernel.org,
Grant Likely <grant.likely@linaro.org>,
ac100@lists.launchpad.net
Subject: [patch] staging: nvec: potential NULL dereference on error path
Date: Thu, 07 Nov 2013 07:54:18 +0000 [thread overview]
Message-ID: <20131107075418.GL21844@elgon.mountain> (raw)
We assume nvec->rx can be NULL earlier so I have added a check here as
well.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/staging/nvec/nvec.c b/drivers/staging/nvec/nvec.c
index 3066ee2..c64e069 100644
--- a/drivers/staging/nvec/nvec.c
+++ b/drivers/staging/nvec/nvec.c
@@ -681,7 +681,8 @@ static irqreturn_t nvec_interrupt(int irq, void *dev)
dev_err(nvec->dev,
"RX buffer overflow on %p: "
"Trying to write byte %u of %u\n",
- nvec->rx, nvec->rx->pos, NVEC_MSG_SIZE);
+ nvec->rx, nvec->rx ? nvec->rx->pos : -1,
+ NVEC_MSG_SIZE);
break;
default:
nvec->state = 0;
WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com>
To: Julian Andres Klode <jak@jak-linux.org>
Cc: devel@driverdev.osuosl.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
kernel-janitors@vger.kernel.org,
Rob Herring <rob.herring@calxeda.com>,
linux-tegra@vger.kernel.org,
Grant Likely <grant.likely@linaro.org>,
ac100@lists.launchpad.net
Subject: [patch] staging: nvec: potential NULL dereference on error path
Date: Thu, 7 Nov 2013 10:54:18 +0300 [thread overview]
Message-ID: <20131107075418.GL21844@elgon.mountain> (raw)
We assume nvec->rx can be NULL earlier so I have added a check here as
well.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/staging/nvec/nvec.c b/drivers/staging/nvec/nvec.c
index 3066ee2..c64e069 100644
--- a/drivers/staging/nvec/nvec.c
+++ b/drivers/staging/nvec/nvec.c
@@ -681,7 +681,8 @@ static irqreturn_t nvec_interrupt(int irq, void *dev)
dev_err(nvec->dev,
"RX buffer overflow on %p: "
"Trying to write byte %u of %u\n",
- nvec->rx, nvec->rx->pos, NVEC_MSG_SIZE);
+ nvec->rx, nvec->rx ? nvec->rx->pos : -1,
+ NVEC_MSG_SIZE);
break;
default:
nvec->state = 0;
next reply other threads:[~2013-11-07 7:54 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-07 7:54 Dan Carpenter [this message]
2013-11-07 7:54 ` [patch] staging: nvec: potential NULL dereference on error path Dan Carpenter
2013-11-07 11:10 ` Julian Andres Klode
2013-11-07 11:10 ` Julian Andres Klode
2013-11-07 11:22 ` Dan Carpenter
2013-11-07 11:22 ` Dan Carpenter
2013-11-07 11:25 ` [patch v2] " Dan Carpenter
2013-11-07 11:25 ` Dan Carpenter
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