From: Stefan Raspl <raspl@linux.vnet.ibm.com>
Date: Mon, 24 Jun 2013 11:21:51 +0000 (+0200)
Subject: qeth: Fix crash on initial MTU size change
X-Git-Tag: v3.11-rc1~64^2~153
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ede88671664128b811e7c709bead39f5b3f3abcf;p=pandora-kernel.git

qeth: Fix crash on initial MTU size change

When the initial MTU size is changed prior to any activity on the device
(e.g. by attaching a z/VM vNIC already configured in Linux to a guestLAN),
we call dev_kfree_skb_irq(NULL) which results in a kernel panic.
Adding a proper check for NULL pointers to address this issue.

Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com>
Signed-off-by: Frank Blaschka <blaschka@linux.vnet.ibm.com>
Reviewed-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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