From: Al Viro <viro@zeniv.linux.org.uk>
Date: Mon, 15 Apr 2013 20:31:13 +0000 (-0400)
Subject: mISDN: fix the races with timers going off just as they are deleted
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~74^2~60
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c08c464d6f4136d9e48ffa23c0bcd93442343b2a;p=pandora-kernel.git

mISDN: fix the races with timers going off just as they are deleted

timer callback in timerdev.c both accesses struct mISDNtimer it's
called for *and* moves it to dev->expired.  We need del_timer_sync(),
or we risk kfree() freeing it right under dev_expire_timer() *and*
dev->expired getting corrupted.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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