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
