[natty/oneiric][SRU][PATCH] bug #905219 - Linux Kernel crash in Netfilter

[Chris J Arges]

BugLink: https://bugs.launchpad.net/bugs/905219

== Natty/Oneiric SRU Justification ==

    Impact: When running KVM with a few VM's with physical eth bridges
and TAP interfaces connected between KVM (via libvirt) and the bridge,
occasionally kernel panics will occur.

== Fix ==

Cherry-pick from a504b86e718a425ea4a34e2f95b5cf0545ddfd8d. This is
present in Precise onwards. This fixes an issue in netfilter/tun where
tun's allocation is problematic and requires additional padding.


== Testcase ==

See bug for reproducible testcase.

Thanks,
--chris j arges

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