From: Pavel Emelyanov <xemul@openvz.org>
Date: Fri, 14 Dec 2007 19:38:04 +0000 (-0800)
Subject: [XFRM]: Fix potential race vs xfrm_state(only)_find and xfrm_hash_resize.
X-Git-Tag: v2.6.25-rc1~1162^2~1080
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4bda4f250d21c3e4f2a2da5f4cef829a434a4046;p=pandora-kernel.git

[XFRM]: Fix potential race vs xfrm_state(only)_find and xfrm_hash_resize.

The _find calls calculate the hash value using the
xfrm_state_hmask, without the xfrm_state_lock. But the
value of this mask can change in the _resize call under
the state_lock, so we risk to fail in finding the desired
entry in hash.

I think, that the hash value is better to calculate
under the state lock.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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