From: Michael S. Tsirkin <mst@redhat.com>
Date: Sun, 23 Jun 2013 14:19:03 +0000 (+0300)
Subject: tun: fix recovery from gup errors
X-Git-Tag: v3.10~13^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7e24bfbe43b545b1689a5f134ed83645b9e34b86;p=pandora-kernel.git

tun: fix recovery from gup errors

get user pages might fail partially in tun zero copy
mode. To recover we need to put all pages that we got,
but code used a wrong index resulting in double-free
errors.

Reported-by: Brad Hubbard <bhubbard@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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