From: "Paul E. McKenney" <paulmck-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
To: Dave Jones <davej-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Li Zefan <lizefan-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>,
Sasha Levin <sasha.levin-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>,
ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org,
Eric Dumazet
<eric.dumazet-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
CAI Qian <caiqian-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
linux-kernel
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Containers
<containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>
Subject: Re: 3.9-rc1 NULL pointer crash at find_pid_ns
Date: Thu, 14 Mar 2013 14:00:38 -0700 [thread overview]
Message-ID: <20130314210038.GD3725@linux.vnet.ibm.com> (raw)
In-Reply-To: <20130314200054.GA5924-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
On Thu, Mar 14, 2013 at 04:00:54PM -0400, Dave Jones wrote:
> On Sat, Mar 09, 2013 at 07:51:46AM -0800, Paul E. McKenney wrote:
> > On Sat, Mar 09, 2013 at 04:01:41PM +0800, Li Zefan wrote:
> >
> > [ . . . ]
> >
> > > > This way, "ptr" is executed exactly once, and the check and the
> > > > hlist_entry() are both using the same value.
> > >
> > > I just played with trinity, and triggered this bug in just a few mins,
> > > and I tried Paul's proposed fix and it works.
> >
> > Thank you for testing this! Please see below for the patch.
> >
> > Sasha, will you be pushing this or would you like me to do so?
>
> [crickets]
>
> Given this has been hanging for the better part of another week,
> Paul why not send it Linus so hopefully rc3 doesn't have this bug ?
Good point! I sent a pull request.
Thanx, Paul
WARNING: multiple messages have this Message-ID (diff)
From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: Dave Jones <davej@redhat.com>, Li Zefan <lizefan@huawei.com>,
Sasha Levin <sasha.levin@oracle.com>,
ebiederm@xmission.com, Eric Dumazet <eric.dumazet@gmail.com>,
CAI Qian <caiqian@redhat.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
Containers <containers@lists.linux-foundation.org>
Subject: Re: 3.9-rc1 NULL pointer crash at find_pid_ns
Date: Thu, 14 Mar 2013 14:00:38 -0700 [thread overview]
Message-ID: <20130314210038.GD3725@linux.vnet.ibm.com> (raw)
In-Reply-To: <20130314200054.GA5924@redhat.com>
On Thu, Mar 14, 2013 at 04:00:54PM -0400, Dave Jones wrote:
> On Sat, Mar 09, 2013 at 07:51:46AM -0800, Paul E. McKenney wrote:
> > On Sat, Mar 09, 2013 at 04:01:41PM +0800, Li Zefan wrote:
> >
> > [ . . . ]
> >
> > > > This way, "ptr" is executed exactly once, and the check and the
> > > > hlist_entry() are both using the same value.
> > >
> > > I just played with trinity, and triggered this bug in just a few mins,
> > > and I tried Paul's proposed fix and it works.
> >
> > Thank you for testing this! Please see below for the patch.
> >
> > Sasha, will you be pushing this or would you like me to do so?
>
> [crickets]
>
> Given this has been hanging for the better part of another week,
> Paul why not send it Linus so hopefully rc3 doesn't have this bug ?
Good point! I sent a pull request.
Thanx, Paul
next prev parent reply other threads:[~2013-03-14 21:00 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-07 9:37 3.9-rc1 NULL pointer crash at find_pid_ns CAI Qian
[not found] ` <611667212.10748821.1362649031475.JavaMail.root-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-03-07 9:42 ` Li Zefan
2013-03-07 9:42 ` Li Zefan
[not found] ` <513860E8.4080807-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2013-03-07 9:59 ` Eric W. Biederman
2013-03-07 9:59 ` Eric W. Biederman
[not found] ` <876213wmwt.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2013-03-07 17:36 ` Sasha Levin
2013-03-07 17:36 ` Sasha Levin
[not found] ` <5138D001.8000409-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
2013-03-07 17:46 ` Eric Dumazet
2013-03-07 17:46 ` Eric Dumazet
2013-03-07 17:50 ` Sasha Levin
2013-03-07 17:50 ` Sasha Levin
[not found] ` <5138D377.6040406-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
2013-03-07 18:04 ` Paul E. McKenney
2013-03-07 18:04 ` Paul E. McKenney
2013-03-07 18:05 ` Eric W. Biederman
2013-03-07 18:05 ` Eric W. Biederman
[not found] ` <87boavrspd.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2013-03-07 18:14 ` Sasha Levin
2013-03-07 18:14 ` Sasha Levin
[not found] ` <5138D8F2.5020900-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
2013-03-07 18:18 ` Eric Dumazet
2013-03-07 18:18 ` Eric Dumazet
2013-03-07 18:21 ` Eric W. Biederman
2013-03-07 18:21 ` Eric W. Biederman
[not found] ` <87r4jrqdf6.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2013-03-07 18:27 ` Sasha Levin
2013-03-07 18:27 ` Sasha Levin
2013-03-07 18:29 ` Paul E. McKenney
2013-03-07 18:29 ` Paul E. McKenney
2013-03-09 8:01 ` Li Zefan
[not found] ` <513AEC65.8000008-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2013-03-09 15:51 ` Paul E. McKenney
2013-03-09 15:51 ` Paul E. McKenney
[not found] ` <20130309155146.GR3268-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2013-03-14 20:00 ` Dave Jones
2013-03-14 20:00 ` Dave Jones
[not found] ` <20130314200054.GA5924-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-03-14 21:00 ` Paul E. McKenney [this message]
2013-03-14 21:00 ` Paul E. McKenney
[not found] ` <20130307182934.GY3268-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2013-03-09 8:01 ` Li Zefan
2013-03-07 18:15 ` Paul E. McKenney
2013-03-07 18:15 ` Paul E. McKenney
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