lkml.org 
[lkml]   [2007]   [Sep]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[CORRECTION][PATCH] Fix a potential NULL pointer dereference in uli526x_interrupt() in drivers/net/tulip/uli526x.c
This patch fixes a potential null dereference bug where we dereference dev before a null check. This patch simply moves the dereferencing after the null check.

Signed-off-by: Micah Gruber <micah.gruber@gmail.com>
---

--- a/drivers/net/tulip/uli526x.c
+++ b/drivers/net/tulip/uli526x.c
@@ -663,7 +663,7 @@
{
struct net_device *dev = dev_id;
struct uli526x_board_info *db = netdev_priv(dev);
- unsigned long ioaddr = dev->base_addr;
+ unsigned long ioaddr;
unsigned long flags;

if (!dev) {
@@ -671,6 +671,8 @@
return IRQ_NONE;
}

+ ioaddr = dev->base_addr;
+
spin_lock_irqsave(&db->lock, flags);
outl(0, ioaddr + DCR7);

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
\
 
 \ /
  Last update: 2007-09-04 10:15    [W:0.047 / U:0.476 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site