linux-kernel - Re: [RFC][PATCH] ps command race fix take2 [1/4] list token

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: <44EC2600.3070006@argo.co.il>
Date:	Wed, 23 Aug 2006 12:55:12 +0300
From:	Avi Kivity <avi@...o.co.il>
To:	ebiederm@...ssion.com
CC:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	linux-kernel@...r.kernel.org, akpm@...l.org, pj@....com,
	saito.tadashi@...t.fujitsu.com, ak@...e.de
Subject: Re: [RFC][PATCH] ps command race fix take2 [1/4] list token

ebiederm@...ssion.com wrote:
>
> I almost removed the tasklist_lock from all read paths.  But as it
> happens sending a signal to a process group is an atomic operation
> with respect to fork so that path has to take the lock, or else
> we get places where "kill -9 -pgrp" fails to kill every process in
> the process group.  Which is even worse.
>

Can't that be fixed by adding a per-pgrp lock, and having both 
fork()/clone() and kill(-pgrp) take that lock?

-- 
error compiling committee.c: too many arguments to function

-
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/