From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nikolaus Rath Subject: Help with debugging intermittent crash on resume from hibernation Date: Fri, 13 Mar 2015 20:02:45 -0700 Message-ID: <8761a3s1vq.fsf@vostro.rath.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Sender: linux-kernel-owner@vger.kernel.org To: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-acpi@vger.kernel.org Hello, In about one out of 10 resumes from hibernation, my system resets after the hibernation image has been loaded. I am hibernating using # echo platform > /sys/power/disk # echo disk > /sys/power/state When testing hibernation using # echo core > /sys/power/pm_test # echo platform > /sys/power/disk # echo disk > /sys/power/state I was not able to produce the same failure. I then tried attaching a serial console and booted with console=3DttyS0,115200n8 no_console_suspend. For the failed attempt, th= e last messages before the reset are: [ 25.192978] Disabling non-boot CPUs ... [ 25.234496] intel_pstate CPU 1 exiting [ 25.270548] NOHZ: local_softirq_pending 10 [ 25.274657] NOHZ: local_softirq_pending 10 [ 25.279892] smpboot: CPU 1 is now offline [ 25.318618] intel_pstate CPU 2 exiting [ 25.454816] smpboot: CPU 2 is now offline [ 25.494879] intel_pstate CPU 3 exiting [ 25.647097] smpboot: CPU 3 is now offline [ 25.687158] intel_pstate CPU 4 exiting [ 25.819349] smpboot: CPU 4 is now offline [ 25.859411] intel_pstate CPU 5 exiting [ 25.995610] smpboot: CPU 5 is now offline [ 26.015640] intel_pstate CPU 6 exiting [ 26.155843] smpboot: CPU 6 is now offline [ 26.175874] intel_pstate CPU 7 exiting [ 26.201040] smpboot: CPU 7 is now offline =46or the successful attempt, the last messages before the jump in the time (which I assume indicate that resume was complete) are: [ 25.428213] Disabling non-boot CPUs ...^M [ 25.549875] intel_pstate CPU 1 exiting^M [ 25.694081] smpboot: CPU 1 is now offline^M [ 27.092141] intel_pstate CPU 2 exiting^M [ 27.232341] smpboot: CPU 2 is now offline^M [ 27.364542] intel_pstate CPU 3 exiting^M [ 27.404597] NOHZ: local_softirq_pending 10^M [ 27.408704] NOHZ: local_softirq_pending 10^M [ 27.413942] smpboot: CPU 3 is now offline^M [ 27.556820] intel_pstate CPU 4 exiting^M [ 27.582000] smpboot: CPU 4 is now offline^M [ 27.600891] intel_pstate CPU 5 exiting^M [ 27.745093] smpboot: CPU 5 is now offline^M [ 27.849247] intel_pstate CPU 6 exiting^M [ 28.538259] smpboot: CPU 6 is now offline^M [ 28.558292] intel_pstate CPU 7 exiting^M [ 28.583457] smpboot: CPU 7 is now offline^M [23880.929604] Enabling non-boot CPUs ...^M [23880.933432] x86: Booting SMP configuration:^M (I uploaded the complete logs to https://dl.dropboxusercontent.com/u/11= 545826/logfiles.tar.xz). At least to me, this unfortunately gives absolutely no indication of what might be going wrong. Other than trying again with the -rc3 (which I'll do next), is there anything else I can do to debug this further? Thanks, -Nikolaus --=20 GPG encrypted emails preferred. Key id: 0xD113FCAC3C4E599F =46ingerprint: ED31 791B 2C5C 1613 AF38 8B8A D113 FCAC 3C4E 599F =C2=BBTime flies like an arrow, fruit flies like a Banana.= =C2=AB