linux-kernel - Re: [patch 2/6] arch: mm: do not invoke OOM killer on kernel fault OOM

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]

Date:	Mon, 29 Jul 2013 14:58:05 -0400
From:	KOSAKI Motohiro <kosaki.motohiro@...il.com>
To:	Johannes Weiner <hannes@...xchg.org>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Michal Hocko <mhocko@...e.cz>,
	David Rientjes <rientjes@...gle.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	azurIt <azurit@...ox.sk>, linux-mm@...ck.org,
	cgroups@...r.kernel.org, x86@...nel.org,
	linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
	kosaki.motohiro@...il.com
Subject: Re: [patch 2/6] arch: mm: do not invoke OOM killer on kernel fault
 OOM

(7/25/13 6:25 PM), Johannes Weiner wrote:
> Kernel faults are expected to handle OOM conditions gracefully (gup,
> uaccess etc.), so they should never invoke the OOM killer.  Reserve
> this for faults triggered in user context when it is the only option.
> 
> Most architectures already do this, fix up the remaining few.
> 
> Signed-off-by: Johannes Weiner <hannes@...xchg.org>

OK. but now almost all arch have the same page fault handler. So, I think
we can implement arch generic page fault handler in future. Ah, ok, never
mind if you are not interest.

Acked-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>

--
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/