From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Tue, 14 Apr 2009 09:09:43 +0000 (-0700)
Subject: tun: Fix crash with non-GSO users
X-Git-Tag: v2.6.30-rc3~78^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0eca93bcf73e5939053a94f7c48f8d6fe6199e00;p=pandora-kernel.git

tun: Fix crash with non-GSO users

When I made the tun driver use non-linear packets as the preferred
option, it broke non-GSO users because they would end up allocating
a completely non-linear packet, which triggers a crash when we call
eth_type_trans.

This patch reverts non-GSO users to using linear packets and adds
a check to ensure that GSO users can't cause crashes in the same
way.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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