linux-kernel - Re: 3.9-rc1 NULL pointer crash at find_pid

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Message-ID: <20130314200054.GA5924@redhat.com>
Date:	Thu, 14 Mar 2013 16:00:54 -0400
From:	Dave Jones <davej@...hat.com>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	Li Zefan <lizefan@...wei.com>,
	Sasha Levin <sasha.levin@...cle.com>, ebiederm@...ssion.com,
	Eric Dumazet <eric.dumazet@...il.com>,
	CAI Qian <caiqian@...hat.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Containers <containers@...ts.linux-foundation.org>
Subject: Re: 3.9-rc1 NULL pointer crash at find_pid_ns

On Sat, Mar 09, 2013 at 07:51:46AM -0800, Paul E. McKenney wrote:
 > On Sat, Mar 09, 2013 at 04:01:41PM +0800, Li Zefan wrote:
 > 
 > [ . . . ]
 > 
 > > > This way, "ptr" is executed exactly once, and the check and the
 > > > hlist_entry() are both using the same value.
 > > 
 > > I just played with trinity, and triggered this bug in just a few mins,
 > > and I tried Paul's proposed fix and it works.
 > 
 > Thank you for testing this!  Please see below for the patch.
 > 
 > Sasha, will you be pushing this or would you like me to do so?

[crickets]

Given this has been hanging for the better part of another week,
Paul why not send it Linus so hopefully rc3 doesn't have this bug ?

	Dave

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