From: Mike Galbraith <efault@gmx.de>
To: Oleg Nesterov <oleg@redhat.com>
Cc: linux-tip-commits@vger.kernel.org, linux-kernel@vger.kernel.org,
hpa@zytor.com, mingo@redhat.com, a.p.zijlstra@chello.nl,
tglx@linutronix.de, mingo@elte.hu
Subject: Re: [tip:sched/core] sched, autogroup: Fix reference leak
Date: Tue, 04 Jan 2011 20:06:24 +0100 [thread overview]
Message-ID: <1294167984.9334.44.camel@marge.simson.net> (raw)
In-Reply-To: <20110104145722.GA5812@redhat.com>
On Tue, 2011-01-04 at 15:57 +0100, Oleg Nesterov wrote:
> > diff --git a/kernel/fork.c b/kernel/fork.c
> > index b6f2475..0672444 100644
> > --- a/kernel/fork.c
> > +++ b/kernel/fork.c
> > @@ -1317,7 +1317,7 @@ bad_fork_cleanup_mm:
> > }
> > bad_fork_cleanup_signal:
> > if (!(clone_flags & CLONE_THREAD))
> > - free_signal_struct(p->signal);
> > + put_signal_struct(p->signal);
>
> Well, free_signal_struct() was correct. Without CLONE_THREAD
> sig->sigcnt must be equal to 1.
Yeah, it was only about the autogroup reference leak.
> But yes, autogroup puts sched_autogroup_exit() into put_signal_struct(),
> so this patch looks fine.
>
> Although I must admit, to me it would be more clean to simply move
> sched_autogroup_exit() from put_signal_struct() into free_signal_struct()
> instead.
OK, I'll send a move it patchlet.
-Mike
next prev parent reply other threads:[~2011-01-04 19:06 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-29 7:10 [PATCH] avoid race condition in pick_next_task_fair in kernel/sched_fair.c shenghui
2010-06-29 10:43 ` Peter Zijlstra
2010-06-29 11:24 ` shenghui
2010-06-29 11:35 ` Peter Zijlstra
2010-06-29 12:44 ` shenghui
2010-12-19 2:03 ` Miklos Vajna
2010-12-22 0:22 ` Miklos Vajna
2010-12-22 8:29 ` Peter Zijlstra
2010-12-22 8:41 ` Peter Zijlstra
2010-12-22 8:41 ` Mike Galbraith
2010-12-22 9:07 ` Peter Zijlstra
2010-12-22 13:31 ` Miklos Vajna
2010-12-22 14:00 ` Peter Zijlstra
2010-12-22 14:11 ` Peter Zijlstra
2010-12-22 15:14 ` Miklos Vajna
2010-12-22 15:25 ` Peter Zijlstra
2010-12-22 17:08 ` Peter Zijlstra
2010-12-22 17:16 ` Ingo Molnar
2010-12-22 17:25 ` Peter Zijlstra
2010-12-22 20:36 ` Peter Zijlstra
2010-12-23 2:08 ` Yong Zhang
2010-12-23 12:12 ` Peter Zijlstra
2010-12-23 12:33 ` Peter Zijlstra
2010-12-23 18:24 ` Peter Zijlstra
[not found] ` <1293132304.6798.6.camel@marge.simson.net>
[not found] ` <1293132862.25981.22.camel@laptop>
[not found] ` <1293187425.7138.2.camel@marge.simson.net>
[not found] ` <1293188091.25981.200.camel@laptop>
[not found] ` <1293192999.18035.4.camel@marge.simson.net>
2010-12-24 15:59 ` [PATCH] sched, cgroup: Use exit hook to avoid use-after-free crash Peter Zijlstra
2010-12-24 16:40 ` Miklos Vajna
2010-12-24 16:48 ` Mike Galbraith
2010-12-24 17:07 ` Peter Zijlstra
2010-12-24 17:24 ` Mike Galbraith
2010-12-25 17:55 ` Balbir Singh
2010-12-25 20:59 ` Paul Menage
2011-01-03 7:06 ` Peter Zijlstra
2010-12-29 15:25 ` Ingo Molnar
2010-12-29 23:07 ` Miklos Vajna
2010-12-31 10:04 ` Mike Galbraith
2010-12-31 10:46 ` Miklos Vajna
2010-12-31 8:32 ` [PATCH] " Mike Galbraith
2011-01-03 8:21 ` Peter Zijlstra
2011-01-04 14:19 ` [tip:sched/core] sched, autogroup: Fix reference leak tip-bot for Mike Galbraith
2011-01-04 14:57 ` Oleg Nesterov
2011-01-04 19:06 ` Mike Galbraith [this message]
2011-01-19 19:04 ` [tip:sched/urgent] sched, cgroup: Use exit hook to avoid use-after-free crash tip-bot for Peter Zijlstra
2010-12-22 21:11 ` [PATCH] avoid race condition in pick_next_task_fair in kernel/sched_fair.c Miklos Vajna
2010-12-22 23:39 ` Miklos Vajna
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