From: Thomas Gleixner <tglx@linutronix.de>
To: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: Peter Zijlstra <peterz@infradead.org>,
LKML <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@redhat.com>, Andy Lutomirski <luto@kernel.org>,
Borislav Petkov <bp@alien8.de>
Subject: Re: Current mainline git (24e700e291d52bd2) hangs when building e.g. perf
Date: Fri, 8 Sep 2017 08:26:44 +0200 (CEST) [thread overview]
Message-ID: <alpine.DEB.2.20.1709080826110.1888@nanos> (raw)
In-Reply-To: <20170908053534.GA276@x4>
On Fri, 8 Sep 2017, Markus Trippelsdorf wrote:
CC+ Borislav. He might have access to such a beast
> On 2017.09.07 at 08:28 +0200, Markus Trippelsdorf wrote:
> > On 2017.09.06 at 15:15 +0200, Markus Trippelsdorf wrote:
> > > On 2017.09.06 at 14:52 +0200, Thomas Gleixner wrote:
> > > > On Tue, 5 Sep 2017, Markus Trippelsdorf wrote:
> > > > > On 2017.09.05 at 10:53 +0200, Peter Zijlstra wrote:
> > > > > > > Any ideas on how to debug this further?
> > > > > >
> > > > > > So you have a (real) serial line on that box?
> > > > >
> > > > > Sadly, no. But hopefully somebody else (with a proper kernel debugging
> > > > > setup) will reproduce the issue soon.
> > > >
> > > > Does the machine respond to ping or is it entirely dead?
> > >
> > > It is entirely dead and doesn't respond to ping.
> >
> > The bug even kills the host (running 4.13) when running 24e700e2 in qemu
> > (kvm) and compiling stuff in parallel in the guest.
> > I see an RCU CPU stall in dmesg (on the host), but unfortunately cannot
> > save it, because nothing gets written to disk after the stall.
> > Connecting to qemu via gdb also doesn't work.
>
> My guess would be a bug in a low level function (asm) that only hits AMD
> machines. I'm running an old Phenom II X4 processor. My config is
> attached.
>
> --
> Markus
>
next prev parent reply other threads:[~2017-09-08 6:26 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-05 7:27 Current mainline git (24e700e291d52bd2) hangs when building e.g. perf Markus Trippelsdorf
2017-09-05 8:53 ` Peter Zijlstra
2017-09-05 9:55 ` Markus Trippelsdorf
2017-09-06 12:52 ` Thomas Gleixner
2017-09-06 13:15 ` Markus Trippelsdorf
2017-09-07 6:28 ` Markus Trippelsdorf
2017-09-08 5:35 ` Markus Trippelsdorf
2017-09-08 6:26 ` Thomas Gleixner [this message]
2017-09-08 8:05 ` Borislav Petkov
2017-09-08 9:16 ` Borislav Petkov
2017-09-08 9:48 ` Markus Trippelsdorf
2017-09-08 10:35 ` Ingo Molnar
2017-09-08 10:39 ` Markus Trippelsdorf
2017-09-08 11:30 ` Markus Trippelsdorf
2017-09-08 16:12 ` Andy Lutomirski
2017-09-08 17:16 ` Markus Trippelsdorf
2017-09-08 21:47 ` Andy Lutomirski
2017-09-08 21:56 ` Borislav Petkov
2017-09-08 23:07 ` Andy Lutomirski
2017-09-08 23:23 ` Linus Torvalds
2017-09-09 0:00 ` Andy Lutomirski
2017-09-09 1:05 ` Linus Torvalds
2017-09-09 1:39 ` Andy Lutomirski
2017-09-09 17:49 ` Andy Lutomirski
2017-09-09 18:02 ` Linus Torvalds
2017-09-09 6:39 ` Markus Trippelsdorf
2017-09-09 10:18 ` Borislav Petkov
2017-09-09 11:07 ` Markus Trippelsdorf
2017-09-09 13:07 ` Borislav Petkov
2017-09-09 13:37 ` Markus Trippelsdorf
2017-09-09 13:39 ` Markus Trippelsdorf
2017-09-09 14:07 ` Borislav Petkov
2017-09-09 14:20 ` Markus Trippelsdorf
2017-09-09 14:33 ` Borislav Petkov
2017-09-09 14:43 ` Markus Trippelsdorf
2017-09-09 16:32 ` Markus Trippelsdorf
2017-09-09 17:05 ` Borislav Petkov
2017-09-09 17:23 ` Markus Trippelsdorf
2017-09-09 17:36 ` Borislav Petkov
2017-09-09 18:14 ` Markus Trippelsdorf
2017-09-09 18:26 ` Borislav Petkov
2017-09-09 18:46 ` Markus Trippelsdorf
2017-09-09 19:11 ` Borislav Petkov
2017-09-09 19:19 ` Borislav Petkov
2017-09-09 18:26 ` Linus Torvalds
2017-09-09 18:29 ` Borislav Petkov
2017-09-09 18:47 ` Linus Torvalds
2017-09-09 19:09 ` Borislav Petkov
2017-09-09 19:21 ` Linus Torvalds
2017-09-09 19:28 ` Andy Lutomirski
2017-09-09 19:37 ` Borislav Petkov
2017-09-10 4:42 ` Andy Lutomirski
2017-09-10 20:22 ` Peter Zijlstra
2017-09-10 20:25 ` Andy Lutomirski
2017-09-17 17:04 ` Ingo Molnar
2017-09-11 1:12 ` Rik van Riel
2017-09-11 1:46 ` Andy Lutomirski
2017-09-11 15:08 ` Rik van Riel
2017-09-12 7:14 ` Markus Trippelsdorf
2017-09-09 8:13 ` Markus Trippelsdorf
2017-09-08 14:51 ` Borislav Petkov
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