From: Jarek Poplawski <jarkao2@gmail.com>
Date: Sun, 4 May 2008 03:46:29 +0000 (-0700)
Subject: sch_htb: remove from event queue in htb_parent_to_leaf()
X-Git-Tag: v2.6.26-rc2~60^2~18
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3ba08b00e0d8413d79be9cab8ec085ceb6ae6fd6;p=pandora-kernel.git

sch_htb: remove from event queue in htb_parent_to_leaf()

There is lack of removing a class from the event queue while changing
from parent to leaf which can cause corruption of this rb tree. This
patch fixes a bug introduced by my patch: "sch_htb: turn intermediate
classes into leaves" commit: 160d5e10f87b1dc88fd9b84b31b1718e0fd76398.

Many thanks to Jan 'yanek' Bortl for finding a way to reproduce this
rare bug and narrowing the test case, which made possible proper
diagnosing.

This patch is recommended for all kernels starting from 2.6.20.

Reported-and-tested-by: Jan 'yanek' Bortl <yanek@ya.bofh.cz>
Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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