Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: SwSusp to disk doesn't work - Try 2 | Date | Sun, 11 Mar 2007 20:27:03 +0100 |
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On Sunday, 11 March 2007 19:37, Thomas Meyer wrote: > Rafael J. Wysocki schrieb: > > > > Could you please put some printk()s in kernel/cpu.c:_cpu_up() to see where > > it gets stuck? I bet one of the notifiers goes to sleep (cpufreq, maybe). > > > Here we go (ok. i forgot __FUNCTION__ ...): > > Mar 11 19:31:33 [kernel] ac ACPI0003:00: freeze > Mar 11 19:31:33 [kernel] acpi device:00: freeze > Mar 11 19:31:33 [kernel] processor ACPI0007:01: freeze > Mar 11 19:31:33 [kernel] processor ACPI0007:00: freeze > Mar 11 19:31:33 [kernel] button button_power:00: freeze > Mar 11 19:31:33 [kernel] acpi acpi_system:00: freeze > Mar 11 19:31:33 [kernel] Disabling non-boot CPUs ... > Mar 11 19:31:33 [kernel] kvm: disabling virtualization on CPU1 > Mar 11 19:31:33 [kernel] CPU 1 is now offline > Mar 11 19:31:33 [kernel] SMP alternatives: switching to UP code > Mar 11 19:31:33 [kernel] PM: Removing info for No Bus:cpu1 > Mar 11 19:31:33 [kernel] PM: Removing info for No Bus:msr1 > Mar 11 19:31:33 [kernel] CPU1 is down > Mar 11 19:31:33 [kernel] swsusp debug: Waiting for 5 seconds. > Mar 11 19:31:33 [kernel] Enabling non-boot CPUs ... > Mar 11 19:31:33 [kernel] <NULL>: before notifier CPU_UP_PREPARE. > > Hung here.
This means that one of the notifiers had not returned before you pressed the button. Now the question is which one (there are many).
I don't know if there's any nicer way to find out that, but I usually hack kernel/sys.c:notifier_call_chain() to print nb->notifier_call (as a pointer) before the call is made. Then I write down the address of the last one called before the hang/oops and use gdb to check which function it points to.
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