[Crash-utility] [PATCH] Fix x86 initialization for {hard, soft}irq_ctx

[OGAWA Hirofumi]

Dave Anderson <anderson at redhat.com> writes:

> Actually, it supposed to be the function that was running on the process stack
> prior to the transition to the IRQ stack.  So it should be "handle_irq" here
> in arch/x86/kernel/irq_32.c:

I see.

[...]

>> crash> bt
>> PID: 0      TASK: c1da8b00  CPU: 0   COMMAND: "swapper/0"
>>  #0 [c1da1f60] __schedule at c19fe305
>>  #1 [c1da1fa0] schedule at c19febb3
>>  #2 [c1da1fac] schedule_preempt_disabled at c19ff0a2
>>  #3 [c1da1fb4] cpu_startup_entry at c10a9580
>> crash> bt 45
>> PID: 45     TASK: f57d3a00  CPU: 3   COMMAND: "kworker/3:1"
>> bt: cannot resolve stack trace:
>> bt: Task in user space -- no backtrace
>> 
>> In above case, looks like failed to detect panic cpu, and "bt 45" also
>> not working.

crash> bt 45
PID: 45     TASK: f57d3a00  CPU: 3   COMMAND: "kworker/3:1"
bt: cannot resolve stack trace:
bt: Task in user space -- no backtrace

[...]

>> crash> bt
>> PID: 31     TASK: f505e080  CPU: 1   COMMAND: "kworker/1:1"
>>  #0 [f5a73de8] die at c101dc04
>>  #1 [f5a73dfc] notify_die at c10809fc
>>  #2 [f5a73e24] do_error_trap at c101ab1c
>>  #3 [f5a73ec4] do_invalid_op at c101b2cf
>>  #4 [f5a73ed4] error_code (via invalid_op) at c1a060fd
>>     EAX: f505e080  EBX: f3da0000  ECX: 00000041  EDX: 0000c06a  EBP: f5a73f28
>>     DS:  007b      ESI: f3da154c  ES:  007b      EDI: 00000000  GS:  ffffb2b0
>>     CS:  0060      EIP: c172b046  ERR: ffffffff  EFLAGS: 00210006
>>  #5 [f5a73f08] __ata_sff_port_intr at c172b046
>>  #6 [f5a73f2c] ata_bmdma_port_intr at c172b333
>>  #7 [f5a73f50] ata_bmdma_interrupt at c172b576
>>  #8 [f5a73f84] __handle_irq_event_percpu at c10cf376
>>  #9 [f5a73fc0] handle_irq_event_percpu at c10cf7c9
>> #10 [f5a73fd4] handle_irq_event at c10cf829
>> #11 [f5a73fe8] handle_edge_irq at c10d2958
>> --- <hard IRQ> ---
>> bt: cannot resolve stack trace:
>> bt: text symbols on stack:

crash> bt
PID: 31     TASK: f505e080  CPU: 1   COMMAND: "kworker/1:1"
 #0 [f5a73de8] die at c101dc04
 #1 [f5a73dfc] notify_die at c10809fc
 #2 [f5a73e24] do_error_trap at c101ab1c
 #3 [f5a73ec4] do_invalid_op at c101b2cf
 #4 [f5a73ed4] error_code (via invalid_op) at c1a060fd
    EAX: f505e080  EBX: f3da0000  ECX: 00000041  EDX: 0000c06a  EBP: f5a73f28 
    DS:  007b      ESI: f3da154c  ES:  007b      EDI: 00000000  GS:  ffffb2b0
    CS:  0060      EIP: c172b046  ERR: ffffffff  EFLAGS: 00210006 
 #5 [f5a73f08] __ata_sff_port_intr at c172b046
 #6 [f5a73f2c] ata_bmdma_port_intr at c172b333
 #7 [f5a73f50] ata_bmdma_interrupt at c172b576
 #8 [f5a73f84] __handle_irq_event_percpu at c10cf376
 #9 [f5a73fc0] handle_irq_event_percpu at c10cf7c9
#10 [f5a73fd4] handle_irq_event at c10cf829
#11 [f5a73fe8] handle_edge_irq at c10d2958
--- <hard IRQ> ---
bt: cannot resolve stack trace:
bt: text symbols on stack:


> OK thanks.  Please send patches as required.

Like above, bt is still not working yet though. Attached the patch to fix typo.

Thanks.
-- 
OGAWA Hirofumi <hirofumi at mail.parknet.co.jp>

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