Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: 4.7-rc6: NMI in intel_idle on HP Proliant G6 | Date | Tue, 12 Jul 2016 14:40:23 +0200 |
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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
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