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Date: Tue, 24 Jul 2007 10:44:56 +0800 From: Micah Gruber <micah.gruber@...il.com> To: linux-kernel@...r.kernel.org, netdev@...r.kernel.org, jgarzik@...ox.com Subject: [PATCH] [2.6.22] Fix a potential NULL pointer dereference in mace_interrupt() in drivers/net/pcmcia/nmclan_cs.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@...il.com> --- --- a/drivers/net/pcmcia/nmclan_cs.c +++ b/drivers/net/pcmcia/nmclan_cs.c @@ -996,7 +996,7 @@ { struct net_device *dev = (struct net_device *) dev_id; mace_private *lp = netdev_priv(dev); - kio_addr_t ioaddr = dev->base_addr; + kio_addr_t ioaddr; int status; int IntrCnt = MACE_MAX_IR_ITERATIONS; @@ -1006,6 +1006,8 @@ return IRQ_NONE; } + ioaddr = dev->base_addr; + if (lp->tx_irq_disabled) { printk( (lp->tx_irq_disabled? - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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