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From: Martin Mokrejs <mmokrejs@fold.natur.cuni.cz>
To: Mike Galbraith <mgalbraith@novell.com>
Cc: Michael Wang <wangyun@linux.vnet.ibm.com>,
	LKML <linux-kernel@vger.kernel.org>,
	"paulmck@linux.vnet.ibm.com" <paulmck@linux.vnet.ibm.com>,
	mmokrejs@fold.natur.cuni.cz, dan.carpenter@oracle.com
Subject: Re: [QUESTION ON BUG] the rcu stall issue could not be reproduced
Date: Mon, 23 Jul 2012 20:46:20 +0200	[thread overview]
Message-ID: <500D9BFC.9090707@fold.natur.cuni.cz> (raw)
In-Reply-To: <1342767624.7432.54.camel@marge.simpson.net>

Hi,
  I see few more RCU bugs reported in bugzilla:

https://bugzilla.kernel.org/show_bug.cgi?id=43028
https://bugzilla.kernel.org/show_bug.cgi?id=40092
https://bugzilla.kernel.org/show_bug.cgi?id=42997

And, I placed my previous long email with logs at
https://bugzilla.kernel.org/show_bug.cgi?id=45091

Hope this helps eventually once.
Martin

Mike Galbraith wrote:
> On Fri, 2012-07-20 at 11:09 +0800, Michael Wang wrote: 
>> Hi, Mike, Martin, Dan
>>
>> I'm currently taking an eye on the rcu stall issue which was reported by
>> you in the mail:
>>
>> rcu: endless stalls
>> 	From: Mike Galbraith
>> linux-3.4-rc7: rcu_sched self-detected stall on CPU
>> 	From: Martin Mokrejs
>> RCU stalls in linux-next
>> 	From: Dan Carpenter
>>
>> I try to reproduce the issue on my X86 server with 12 cpu
> 
> The 'endless stalls' box was 341.33333 times larger.  Dunno if you can
> even set a serial port slow enough to approximate all cores trying to
> gripe through a single pinhole simultaneously.
> 
> -Mike
> 
> 



  parent reply	other threads:[~2012-07-23 18:46 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-07-20  3:09 Michael Wang
2012-07-20  6:41 ` Dan Carpenter
2012-07-20  8:24   ` Michael Wang
2012-07-20  8:36     ` Dan Carpenter
2012-07-20  8:53       ` Michael Wang
2012-07-20  7:00 ` Mike Galbraith
2012-07-20  8:30   ` Michael Wang
2012-07-20  9:08     ` Mike Galbraith
2012-07-20 10:18       ` Martin Mokrejs
2012-07-23  2:46         ` Michael Wang
2012-07-23  2:37       ` Michael Wang
2012-07-23 18:46   ` Martin Mokrejs [this message]
2012-07-24  1:19     ` Michael Wang

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