On Fri, Dec 6, 2013 at 7:19 AM, Oleg Nesterov wrote:
> On 12/05, David Rientjes wrote:
>>
>> On Thu, 5 Dec 2013, Oleg Nesterov wrote:
>>
>> > > Your v2 series looks good and I suspect anybody trying them doesn't have
>> > > additional reports of the infinite loop? Should they be marked for
>> > >
On 12/06, Oleg Nesterov wrote:
>
> And this is risky. For example, 1/4 depends on (at least) another patch
> I sent in preparation for this change, commit 81907739851
> "kernel/fork.c:copy_process(): don't add the uninitialized
> child to thread/task/pid lists", perhaps on something else.
Hmm. not
On 12/05, David Rientjes wrote:
>
> On Thu, 5 Dec 2013, Oleg Nesterov wrote:
>
> > > Your v2 series looks good and I suspect anybody trying them doesn't have
> > > additional reports of the infinite loop? Should they be marked for
> > > stable?
> >
> > Unlikely...
> >
> > I think the patch from Sa
On Thu, 5 Dec 2013, Oleg Nesterov wrote:
> > > OK, I am going to send the initial fixes today. This means (I hope)
> > > that we do not need this or Sameer's "[PATCH] mm, oom: Fix race when
> > > selecting process to kill".
> >
> > Your v2 series looks good and I suspect anybody trying them doesn'
On 12/04, David Rientjes wrote:
>
> On Mon, 2 Dec 2013, Oleg Nesterov wrote:
>
> > OK, I am going to send the initial fixes today. This means (I hope)
> > that we do not need this or Sameer's "[PATCH] mm, oom: Fix race when
> > selecting process to kill".
>
> Your v2 series looks good and I suspect
On Mon, 2 Dec 2013, Oleg Nesterov wrote:
> OK, I am going to send the initial fixes today. This means (I hope)
> that we do not need this or Sameer's "[PATCH] mm, oom: Fix race when
> selecting process to kill".
>
Your v2 series looks good and I suspect anybody trying them doesn't have
addition
On 11/28, Oleg Nesterov wrote:
>
> 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 che
...@kvack.org;
linux-kernel@vger.kernel.org; Peter Zijlstra; gre...@linuxfoundation.org; Tu,
Xiaobing; azurIt; Sameer Nanda
Subject: RE: [PATCH] Fix race between oom kill and task exit
> From: Oleg Nesterov [mailto:o...@redhat.com]
> Sent: Friday, November 29, 2013 2:39 AM
> To: Michal H
.kernel.org; Peter Zijlstra;
> gre...@linuxfoundation.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
> > optim
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.
--
To
On 11/28, Ma, Xindong wrote:
>
> --- a/mm/oom_kill.c
> +++ b/mm/oom_kill.c
> @@ -412,16 +412,6 @@ void oom_kill_process(struct task_struct *p, gfp_t
> gfp_mask, int order,
> static DEFINE_RATELIMIT_STATE(oom_rs, DEFAULT_RATELIMIT_INTERVAL,
> DEFAUL
On Thu, Nov 28, 2013 at 01:00:18PM +0100, Michal Hocko wrote:
> [CCing Oleg - the thread started here:
> https://lkml.org/lkml/2013/11/28/2]
>
> On Thu 28-11-13 09:41:40, William Dauchy wrote:
> [...]
> > However, I'm now wondering if this present patch is a replacement of
> > Sameer Nanda's patch
[CCing Oleg - the thread started here:
https://lkml.org/lkml/2013/11/28/2]
On Thu 28-11-13 09:41:40, William Dauchy wrote:
[...]
> However, I'm now wondering if this present patch is a replacement of
> Sameer Nanda's patch or if this a complementary patch.
They are both trying to solve the same i
> Od: Johannes Weiner
> Komu: "Ma, Xindong"
> Dátum: 28.11.2013 07:54
> Predmet: Re: [PATCH] Fix race between oom kill and task exit
>
> CC: "a...@linux-foundation.org" , "mho...@suse.cz"
> , "rient...@google.com" ,
> &
Hi Johannes,
On Thu, Nov 28, 2013 at 7:35 AM, Johannes Weiner wrote:
> Cc William and azur who might have encountered this problem.
Thank you for letting me know.
Note that before this patch I saw the one from Sameer Nanda
mm, oom: Fix race when selecting process to kill
https://lkml.org/lkml/20
Cc William and azur who might have encountered this problem.
On Thu, Nov 28, 2013 at 05:09:16AM +, Ma, Xindong wrote:
> From: Leon Ma
> Date: Thu, 28 Nov 2013 12:46:09 +0800
> Subject: [PATCH] Fix race between oom kill and task exit
>
> There is a race between oom kil
From: Leon Ma
Date: Thu, 28 Nov 2013 12:46:09 +0800
Subject: [PATCH] Fix race between oom kill and task exit
There is a race between oom kill and task exit. Scenario is:
TASK A TASK B
TASK B is selected to oom kill
in oom_kill_process()
check PF_EXITING of TASK B
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