linux-kernel - Re: + freezer-check-oom-kill-while-being-frozen.patch added to -mm tree

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: <CAM_iQpUyCR3Bv1QhFkVmii9vB=fjMAUiWZ4T+mj60=FUZOXS+A@mail.gmail.com>
Date:	Thu, 16 Oct 2014 13:53:28 -0700
From:	Cong Wang <xiyou.wangcong@...il.com>
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	Michal Hocko <mhocko@...e.cz>,
	David Rientjes <rientjes@...gle.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>, Tejun Heo <tj@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: + freezer-check-oom-kill-while-being-frozen.patch added to -mm tree

On Thu, Oct 16, 2014 at 1:39 PM, Oleg Nesterov <oleg@...hat.com> wrote:
>> Fix the issue by checking for TIF_MEMDIE thread flag and get away from the
>> fridge if it is set.  oom_scan_process_thread doesn't have to check for
>> the frozen task anymore because do_send_sig_info will wake up the thread
>> and TIF_MEMDIE is already set by that time.
>
> I must have missed something... but __refrigerator() sleeps in
> TASK_UNINTERRUPTIBLE and do_send_sig_info() won't wake it up?
>

This is exactly what we are trying to fix. Make sure you read the patch
as well before reply? Otherwise, I must have missed your point. :)
--
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/