linux-kernel - Re: [Bug #10815] 2.6.26-rc4: RIP find_pid

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Message-ID: <20080614145839.GA10523@tv-sign.ru>
Date:	Sat, 14 Jun 2008 18:58:39 +0400
From:	Oleg Nesterov <oleg@...sign.ru>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	Adrian Bunk <bunk@...nel.org>, "Rafael J. Wysocki" <rjw@...k.pl>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0

On 06/14, Paul E. McKenney wrote:
>
> On Fri, Jun 13, 2008 at 04:52:55PM +0300, Adrian Bunk wrote:
> > On Sat, Jun 07, 2008 at 10:42:57PM +0200, Rafael J. Wysocki wrote:
> > > This message has been generated automatically as a part of a report
> > > of recent regressions.
> > > 
> > > The following bug entry is on the current list of known regressions
> > > from 2.6.25.  Please verify if it still should be listed.
> > > 
> > > 
> > > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10815
> > > Subject		: 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0
> > > Submitter	: Alexey Dobriyan <adobriyan@...il.com>
> > > Date		: 2008-05-27 09:23 (12 days old)
> > > References	: http://lkml.org/lkml/2008/5/27/9
> > > Handled-By	: Oleg Nesterov <oleg@...sign.ru>
> > > 		  Linus Torvalds <torvalds@...ux-foundation.org>
> > > 		  Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
> > > Patch		: http://lkml.org/lkml/2008/5/28/16
> > 
> > What happened with this issue?
> 
> The patch listed above works for me, passes rcutorture, &c.  However,
> I never have been able to reproduce the original problem, so cannot say
> whether it qualifies as a fix.

I doubt very much RCU was the reason of this problem.

Alexey, how did you trigger this problem?

Oleg.

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