linux-kernel - Re: [PATCH 0/8] make vfork killable/restartable/traceable

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:	Thu, 28 Jul 2011 16:58:02 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Roland McGrath <roland@...k.frob.com>, Tejun Heo <tj@...nel.org>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Matt Fleming <matt.fleming@...ux.intel.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/8] make vfork killable/restartable/traceable

On 07/28, Oleg Nesterov wrote:
>
> On 07/27, Linus Torvalds wrote:
> >
> > I *suspect* that the killable() thing could be done more nicely by
> > moving the vfork_completion into the parent instead, and maybe the
> > vfork cleanup could just use
> > "complete(&task->parent->vfork_completion);" instead
>
> I thought about moving the "vfork_done" thing (in some form) from
> child to parent. So far I do not see a clean solution.

Just in case...

We can also do

	- struct completion *vfork_done;
	+ struct completion vfork_done;

in struct task_struct. This can really simplify these changes.
But we still need to get/put the child, and this bloats task_struct.

Oleg.

--
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/