From: Konstantin Khlebnikov <khlebnikov@openvz.org>
Date: Fri, 14 Dec 2012 01:02:36 +0000 (+0000)
Subject: mISDN: fix race in timer canceling on module unloading
X-Git-Tag: v3.8-rc1~40^2~41
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4a0ae7b0a9e55db9b85f8abda623f145311eb951;p=pandora-kernel.git

mISDN: fix race in timer canceling on module unloading

Using timer_pending() without additional syncronization is racy,
del_timer_sync() must be used here for waiting in-flight handler.
Bug caught with help from "debug-objects" during random insmod/rmmod.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: David S. Miller <davem@davemloft.net>
Cc: netdev <netdev@vger.kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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