linux-kernel - Re: [PATCH] mm/oom_kill.c: don't kill TASK

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: <20150919082506.GC28815@dhcp22.suse.cz>
Date:	Sat, 19 Sep 2015 10:25:06 +0200
From:	Michal Hocko <mhocko@...nel.org>
To:	Christoph Lameter <cl@...ux.com>
Cc:	Oleg Nesterov <oleg@...hat.com>, Kyle Walker <kwalker@...hat.com>,
	akpm@...ux-foundation.org, rientjes@...gle.com, hannes@...xchg.org,
	vdavydov@...allels.com, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
	Stanislav Kozina <skozina@...hat.com>
Subject: Re: [PATCH] mm/oom_kill.c: don't kill TASK_UNINTERRUPTIBLE tasks

On Fri 18-09-15 10:41:09, Christoph Lameter wrote:
[...]
>  	if (test_tsk_thread_flag(task, TIF_MEMDIE)) {
> -		if (oc->order != -1)
> -			return OOM_SCAN_ABORT;
> +		if (unlikely(frozen(task)))
> +			__thaw_task(task);

TIF_MEMDIE processes will get thawed automatically and then cannot be
frozen again. Have a look at mark_oom_victim.

>  	}
>  	if (!task->mm)
>  		return OOM_SCAN_CONTINUE;

-- 
Michal Hocko
SUSE Labs
--
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/