From: Dave Jones <davej@codemonkey.org.uk>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>,
Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: proc_flush_task oops
Date: Mon, 18 Dec 2017 20:22:14 -0500 [thread overview]
Message-ID: <20171219012214.GA19673@codemonkey.org.uk> (raw)
In-Reply-To: <CA+55aFxkKNTukHGBBUmB+RasUAQPK3udsNw156yAyocr46cefg@mail.gmail.com>
On Mon, Dec 18, 2017 at 03:50:52PM -0800, Linus Torvalds wrote:
> On Mon, Dec 18, 2017 at 3:10 PM, Dave Jones <davej@codemonkey.org.uk> wrote:
> > On Mon, Dec 18, 2017 at 10:15:41PM +0000, Al Viro wrote:
> > > On Mon, Dec 18, 2017 at 04:44:38PM -0500, Dave Jones wrote:
> > > > I've hit this twice today. It's odd, because afaics, none of this code
> > > > has really changed in a long time.
> > >
> > > Which tree had that been?
> >
> > Linus, rc4.
>
> Ok, so the original report was marked as spam for me for whatever
> reason. I ended up re-analyzing the oops, but came to the same
> conclusion you did: it's a NULL mnt pointer in proc_flush_task_mnt().
> ..
> But I don't see what would have changed in this area recently.
>
> Do you end up saving the seeds that cause crashes? Is this
> reproducible? (Other than seeing it twoce, of course)
Hit it another two times in the last hour, so it's pretty reproducable.
Running it now with some more logging, will see if that yields any extra clues.
Dave
next prev parent reply other threads:[~2017-12-19 1:22 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-18 21:44 proc_flush_task oops Dave Jones
2017-12-18 22:15 ` Al Viro
2017-12-18 23:10 ` Dave Jones
2017-12-18 23:50 ` Linus Torvalds
2017-12-19 1:22 ` Dave Jones [this message]
2017-12-19 3:39 ` Dave Jones
2017-12-19 10:49 ` Tetsuo Handa
2017-12-19 18:25 ` Eric W. Biederman
2017-12-19 18:27 ` Eric W. Biederman
2017-12-19 19:30 ` Dave Jones
2017-12-19 21:44 ` Eric W. Biederman
2017-12-20 1:54 ` Eric W. Biederman
2017-12-20 5:28 ` Dave Jones
2017-12-20 18:25 ` Eric W. Biederman
2017-12-21 3:16 ` Dave Jones
2017-12-21 8:26 ` Eric W. Biederman
2017-12-21 10:38 ` Alexey Dobriyan
2017-12-21 14:25 ` Dave Jones
2017-12-21 16:41 ` Eric W. Biederman
2017-12-21 22:00 ` Dave Jones
2017-12-22 1:31 ` Eric W. Biederman
2017-12-22 3:35 ` Dave Jones
2017-12-22 7:58 ` Eric W. Biederman
2017-12-22 10:13 ` Alexey Dobriyan
2017-12-22 14:41 ` Eric W. Biederman
2017-12-22 16:11 ` [TEST PATCH] pid: fix allocating pid 2 for init (was Re: proc_flush_task oops) Alexey Dobriyan
2017-12-24 3:12 ` Eric W. Biederman
2017-12-24 3:16 ` [PATCH] pid: Handle failure to allocate the first pid in a pid namespace Eric W. Biederman
2017-12-20 8:00 ` proc_flush_task oops Dmitry Vyukov
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