From: Steffen Klassert <steffen.klassert@secunet.com>
Date: Wed, 19 Feb 2014 09:07:34 +0000 (+0100)
Subject: xfrm: Fix unlink race when policies are deleted.
X-Git-Tag: v3.14-rc6~30^2~22^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3a9016f97fdc8bfbb26ff36ba8f3dc9162eb691b;p=pandora-kernel.git

xfrm: Fix unlink race when policies are deleted.

When a policy is unlinked from the lists in thread context,
the xfrm timer can fire before we can mark this policy as dead.
So reinitialize the bydst hlist, then hlist_unhashed() will
notice that this policy is not linked and will avoid a
doulble unlink of that policy.

Reported-by: Xianpeng Zhao <673321875@qq.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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