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From: "Rafael J. Wysocki" <rjw@rjwysocki.net>
To: Meelis Roos <mroos@linux.ee>
Cc: Linux Kernel list <linux-kernel@vger.kernel.org>,
	linux-pm@vger.kernel.org, Len Brown <lenb@kernel.org>
Subject: Re: 4.7-rc6: NMI in intel_idle on HP Proliant G6
Date: Tue, 12 Jul 2016 14:40:23 +0200	[thread overview]
Message-ID: <5630546.0MIYeGNSYG@vostro.rjw.lan> (raw)
In-Reply-To: <alpine.LRH.2.20.1607121525060.2088@math.ut.ee>

On Tuesday, July 12, 2016 03:27:19 PM Meelis Roos wrote:
> > On HP Proliant DL360 G6, Debian unstable 4.6 kernel runs fine but 
> > selfcompiled 4.7-rc6 and 4.7-rc7 sometimes crash with NMI from 
> > intel_idle. Sometimes it boots fine. With intel_idle disabled, it has 
> > booted successful so far in 2 tries, one with rc6 and one with rc7.
> 
> More testing shows it can NMI on acpi_idle too, not just intel_idle.
> 
> > Screenshot with some backtrace: 
> > http://kodu.ut.ee/~mroos/intel-idle-NMI.png
> 
> http://kodu.ut.ee/~mroos/acpi-idle-NMI.png

There were almost no changes in the ACPI idle driver between 4.6 and
4.7-rc, so the reason is somewhere else.

Have you tried any earlier 4.7-rc?

The only change between 4.6 and now in the ACPI processor stuff at all is
this one

86314751c794 ACPI / processor: Avoid reserving IO regions too early

so does it help if that's reverted?

Otherwise, any chances to bisect?

Thanks,
Rafael

  reply	other threads:[~2016-07-12 12:35 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-12 12:05 4.7-rc6: NMI in intel_idle on HP Proliant G6 Meelis Roos
2016-07-12 12:27 ` Meelis Roos
2016-07-12 12:40   ` Rafael J. Wysocki [this message]
2016-07-12 14:22     ` Meelis Roos
2016-07-13  7:17       ` IOMMU+DMAR causing NMIs-s (was: 4.7-rc6: NMI in intel_idle on HP Proliant G6) Meelis Roos
2016-07-13  8:18         ` Joerg Roedel
2016-07-13  8:31           ` Meelis Roos
2016-07-13  9:03             ` Joerg Roedel
2016-07-13  9:16               ` Meelis Roos
2016-07-13  9:43                 ` Joerg Roedel
2016-07-13  9:40               ` Meelis Roos
2016-07-13  9:49                 ` Joerg Roedel
2016-07-13  9:58                   ` Meelis Roos
2016-07-13 10:18                     ` Joerg Roedel
2016-07-13 14:48                       ` Alex Williamson
2016-07-13 15:13                         ` IOMMU+DMAR causing NMIs-s Linda Knippers
2016-07-13 21:52                           ` Meelis Roos
2016-07-13 23:04                             ` Alex Williamson
2016-07-14  8:31                               ` Joerg Roedel
2016-08-24  8:19                               ` Meelis Roos
2016-07-13 13:52               ` IOMMU+DMAR causing NMIs-s (was: 4.7-rc6: NMI in intel_idle on HP Proliant G6) Henrique de Moraes Holschuh
2016-07-13  7:21       ` 4.7-rc6: NMI in intel_idle on HP Proliant G6 Meelis Roos

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