Messages in this thread | | | Date | Fri, 3 Sep 2004 15:01:19 +0200 | From | Florian Schmidt <> | Subject | Re: lockup with voluntary preempt R0 and VP, KP, etc, disabled |
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On Fri, 3 Sep 2004 13:55:05 +0200 Ingo Molnar <mingo@elte.hu> wrote:
> > * Florian Schmidt <mista.tapas@gmx.net> wrote: > > > [<c0105e29>] do_signal+0x79/0x110 > > [<c01162a0>] default_wake_function+0x0/0x20 > > c012fgd7 do_futex+0x47/0xa0 > > c012fb20 sys_futex > > c0103f07 do_notify > > c01060e6 work_notifysig > > > > Code: 96 54 01 00 00 8e e0 8e e8 85 d2 74 11 c7 86 54 01 00 00 00 00 > > 00 00 89 d0 e8 bb e4 ff 8b 9e 5c 01 00 00 85 db 74 09 8b 45 0c <8b> > > 40 20 48 78 08 8b 5d f8 8b 75 fc c9 c3 c7 86 56 01 00 00 00 > > <6> note: scsynth exited with preempt count 1 > > it seems the first crash scrolled off and we dont really know what > happened ... Could you apply the attached patch - it will shut the > console off and freeze the box after printing the first oops.
Ok, i booted with a bigger vga console. btw: it seems with APIC and nmi_watchdog, i actually need to quit my scsynth app to trigger the bug. so maybe this is a different one than the one i saw befure _during_ scsynth running [and jackd of course].
Since this is lots of text i have again become lazy. It would be much better if someone could reproduce this behaviour on a machine with serial console. Or a digital camera would work, too, to make a screenshot of the Ooops.
Anyways: the screen was divided by a -----cut here: --- line. Above which i saw this trace:
Badness in __put_task_struct at kernel/fork.c:89 __put_task_struct schedule do_syslog sub_preempt_couint dnotify_parent autoreceive_wake_function kmsg_read autoreceive_wake_funtion kmsg_read vfs_read sys_read syscall_call -----cut here:----
then this: Kernel Bug sat kernel/exit.c838 invalid operand 0000[#1] PREEMPT CPU:0 EIP: 0060:[<c011cb34>] not tainted VLI eax: 0 ebx: 0 ecx: ef6d11b0 edx: 0 esi: 0 edi: e558f2f0 ebp: e55e3ea8 esp: e55e3e8c ds:007b es:007b ss:0068 process scsynth (pid 2624), threadinfo=e55e2000 tak=e55f2f0
Stack [skipped] Trace: do_group_exit get_singal_to_deliver do_signal default_wake_function do_futex sys_futex do_notify_resume work_notify_sig[nal??]
Hope i have got some useful info this time around. It seems there was another bug which scrolled off the screen. I used the patched kernel though.. [i'm pretty sure at least]..
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