From: Oleg Nesterov <oleg@redhat.com>
To: Pavel Machek <pavel@ucw.cz>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Roland McGrath <roland@hack.frob.com>, Tejun Heo <tj@kernel.org>,
Denys Vlasenko <dvlasenk@redhat.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Matt Fleming <matt.fleming@linux.intel.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/8] make vfork killable/restartable/traceable
Date: Thu, 11 Aug 2011 18:09:14 +0200 [thread overview]
Message-ID: <20110811160914.GA8985@redhat.com> (raw)
In-Reply-To: <20110810214444.GD9320@atrey.karlin.mff.cuni.cz>
On 08/10, Pavel Machek wrote:
>
> > CLONE_VFORK sleeps in TASK_INTERRUPTIBLE until the child exits/execs.
> > This is obviously not good, it is sooo simple to create the task which
> > doesn't react to SIGKILL/SIGSTOP.
> >
> > Questions:
> >
> > - do we really need this?
> >
> I believe we should fix it. I was always claiming "if it does not
> react to SIGKILL, it is a kernel bug" and well, this just proved me
> wrong...
Agreed.
Just in case... sorry to all for delay, I am busy. I'll try to resend
the simplified version "soon", at least the "unkillable" part. And
we also have the pending oom issues...
Oleg.
next prev parent reply other threads:[~2011-08-11 16:12 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-27 16:31 [PATCH 0/8] make vfork killable/restartable/traceable Oleg Nesterov
2011-07-27 16:32 ` [PATCH 1/8] vfork: introduce complete_vfork_done() Oleg Nesterov
2011-07-27 16:32 ` [PATCH 2/8] vfork: introduce clone_vfork_finish() Oleg Nesterov
2011-07-27 16:32 ` [PATCH 3/8] vfork: make it killable Oleg Nesterov
2011-07-29 13:02 ` Matt Fleming
2011-07-29 14:32 ` Oleg Nesterov
2011-07-29 15:32 ` Matt Fleming
2011-07-27 16:33 ` [PATCH 4/8] coredump_wait: don't call complete_vfork_done() Oleg Nesterov
2011-07-29 13:02 ` Matt Fleming
2011-07-29 14:25 ` Oleg Nesterov
2011-07-29 15:26 ` Matt Fleming
2011-07-27 16:33 ` [PATCH 5/8] introduce find_get_task_by_vpid() Oleg Nesterov
2011-07-27 16:33 ` [PATCH 6/8] vfork: do not setup child->vfork_done beforehand Oleg Nesterov
2011-07-27 16:34 ` [PATCH 7/8] vfork: make it stoppable/traceable Oleg Nesterov
2011-07-27 16:34 ` [PATCH 8/8] vfork: do not block SIG_DFL/SIG_IGN signals is single-threaded Oleg Nesterov
2011-07-27 16:34 ` [PATCH 9/8] kill PF_STARTING Oleg Nesterov
2011-07-27 19:39 ` [PATCH 0/8] make vfork killable/restartable/traceable Linus Torvalds
2011-07-28 13:59 ` Oleg Nesterov
2011-07-28 14:58 ` Oleg Nesterov
2011-07-27 22:38 ` Pedro Alves
2011-07-29 19:23 ` Tejun Heo
2011-08-12 17:55 ` [PATCH v2 0/3] make vfork killable Oleg Nesterov
2011-08-12 17:56 ` [PATCH 1/3] vfork: introduce complete_vfork_done() Oleg Nesterov
2011-08-12 17:56 ` [PATCH 2/3] vfork: make it killable Oleg Nesterov
2011-08-19 20:33 ` Matt Fleming
2011-08-22 13:35 ` Oleg Nesterov
2011-08-12 17:56 ` [PATCH 3/3] coredump_wait: don't call complete_vfork_done() Oleg Nesterov
2011-08-17 7:50 ` Tejun Heo
2011-08-17 15:11 ` Oleg Nesterov
2011-08-12 17:57 ` [PATCH 4/3] kill PF_STARTING Oleg Nesterov
2011-08-17 7:51 ` Tejun Heo
2011-08-13 16:18 ` [PATCH v2 0/3] make vfork killable Tejun Heo
2011-08-15 19:42 ` Oleg Nesterov
2011-08-16 19:42 ` Tejun Heo
2011-08-23 22:01 ` Matt Helsley
2011-08-23 22:12 ` Tejun Heo
[not found] ` <20110727163610.GJ23793@redhat.com>
[not found] ` <20110727175624.GA3950@redhat.com>
[not found] ` <20110728154324.GA22864@redhat.com>
[not found] ` <alpine.DEB.2.00.1107281341060.16093@chino.kir.corp.google.com>
[not found] ` <20110729141431.GA3501@redhat.com>
[not found] ` <20110730143426.GA6061@redhat.com>
2011-07-30 15:22 ` mm->oom_disable_count is broken Oleg Nesterov
2011-08-01 11:52 ` KOSAKI Motohiro
2011-08-29 18:37 ` Oleg Nesterov
2011-08-29 23:17 ` David Rientjes
2011-08-30 7:43 ` [patch 1/2] oom: remove oom_disable_count David Rientjes
2011-08-30 7:43 ` [patch 2/2] oom: fix race while temporarily setting current's oom_score_adj David Rientjes
2011-08-30 15:57 ` Oleg Nesterov
2011-08-30 15:28 ` [patch 1/2] oom: remove oom_disable_count Oleg Nesterov
2011-08-30 22:06 ` David Rientjes
2011-08-30 16:17 ` mm->oom_disable_count is broken Oleg Nesterov
2011-08-10 21:44 ` [PATCH 0/8] make vfork killable/restartable/traceable Pavel Machek
2011-08-11 16:09 ` Oleg Nesterov [this message]
2011-08-11 16:22 ` Tejun Heo
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