linux-kernel - RE: [PATCH] Fix race between oom kill and task exit

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <EE928378561BF1449699C96571234A741231A21A@SHSMSX103.ccr.corp.intel.com>
Date:	Fri, 29 Nov 2013 02:08:23 +0000
From:	"Tu, Xiaobing" <xiaobing.tu@...el.com>
To:	"Ma, Xindong" <xindong.ma@...el.com>,
	Oleg Nesterov <oleg@...hat.com>, Michal Hocko <mhocko@...e.cz>
CC:	William Dauchy <wdauchy@...il.com>,
	Johannes Weiner <hannes@...xchg.org>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"rientjes@...gle.com" <rientjes@...gle.com>,
	"rusty@...tcorp.com.au" <rusty@...tcorp.com.au>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	azurIt <azurit@...ox.sk>, Sameer Nanda <snanda@...omium.org>
Subject: RE: [PATCH] Fix race between oom kill and task exit

We will do more stress test in more machine at the same time

-----Original Message-----
From: Ma, Xindong 
Sent: Friday, November 29, 2013 10:06 AM
To: Oleg Nesterov; Michal Hocko
Cc: William Dauchy; Johannes Weiner; akpm@...ux-foundation.org; rientjes@...gle.com; rusty@...tcorp.com.au; linux-mm@...ck.org; linux-kernel@...r.kernel.org; Peter Zijlstra; gregkh@...uxfoundation.org; Tu, Xiaobing; azurIt; Sameer Nanda
Subject: RE: [PATCH] Fix race between oom kill and task exit

> From: Oleg Nesterov [mailto:oleg@...hat.com]
> Sent: Friday, November 29, 2013 2:39 AM
> To: Michal Hocko
> Cc: William Dauchy; Johannes Weiner; Ma, Xindong; 
> akpm@...ux-foundation.org; rientjes@...gle.com; rusty@...tcorp.com.au; 
> linux-mm@...ck.org; linux-kernel@...r.kernel.org; Peter Zijlstra; 
> gregkh@...uxfoundation.org; Tu, Xiaobing; azurIt; Sameer Nanda
> Subject: Re: [PATCH] Fix race between oom kill and task exit
> 
> On 11/28, Michal Hocko wrote:
> >
> > They are both trying to solve the same issue. Neither of them is 
> > optimal unfortunately.
> 
> yes, but this one doesn't look right.
> 
> > Oleg said he would look into this and I have seen some patches but 
> > didn't geto check them.
> 
> Only preparations so far.
> 
> Oleg.

I was not aware there's a long story for this issue. I hit this issue a lot of times during stress test and root caused it. After applying my patch, I did extensive test on 5 machines for a long time, it does not reproduced anymore so I submitted the patch.

I will do more research on this issue.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/