From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Fri, 18 Feb 2011 22:35:56 +0000 (+0000)
Subject: tcp: fix inet_twsk_deschedule()
X-Git-Tag: v2.6.37.3~64
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ee9c1a61d8d131503faaead0d7636bdc1e44e3c3;p=pandora-kernel.git

tcp: fix inet_twsk_deschedule()

commit 91035f0b7d89291af728b6f3e370c3be58fcbe1b upstream.

Eric W. Biederman reported a lockdep splat in inet_twsk_deschedule()

This is caused by inet_twsk_purge(), run from process context,
and commit 575f4cd5a5b6394577 (net: Use rcu lookups in inet_twsk_purge.)
removed the BH disabling that was necessary.

Add the BH disabling but fine grained, right before calling
inet_twsk_deschedule(), instead of whole function.

With help from Linus Torvalds and Eric W. Biederman

Reported-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Daniel Lezcano <daniel.lezcano@free.fr>
CC: Pavel Emelyanov <xemul@openvz.org>
CC: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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