Re: [Xen-devel] High CPU temp, suspend problem - xen 4.1.5-pre, linux 3.7.x

[Marek Marczykowski <marmarek@xxxxxxxxxxxxxxxxxxxxxx>]

On 26.03.2013 17:03, Jan Beulich wrote:
>>>> On 26.03.13 at 14:50, Marek Marczykowski <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
> wrote:
>> On 26.03.2013 14:11, Jan Beulich wrote:
>>>>>> On 26.03.13 at 13:17, Marek Marczykowski 
>>>>>> <marmarek@xxxxxxxxxxxxxxxxxxxxxx> 
>> wrote:
>>>> Finally got serial console :)
>>>> The debug=y problem is (actually at resume):
>>>> (XEN) Assertion 'test_bit(vector, cfg->used_vectors)' failed at 
>>>> io_apic.c:542
>>>> (XEN) ----[ Xen-4.1.5-rc1  x86_64  debug=y  Tainted:    C ]----
>>>> (XEN) CPU:    0
>>>> (XEN) RIP:    e008:[<ffff82c48015e288>] 
>>>> smp_irq_move_cleanup_interrupt+0x1c3/0x23d
>>>> (XEN) RFLAGS: 0000000000010046   CONTEXT: hypervisor
>>>> (XEN) rax: 0000000000000000   rbx: 00000000000000e9   rcx: ffff82c48029ff18
>>>> (XEN) rdx: 00000000000000e9   rsi: 000000000000002a   rdi: ffff830421060538
>>>> (XEN) rbp: ffff82c48029ff08   rsp: ffff82c48029feb8   r8:  ffff88041820eb60
>>>> (XEN) r9:  0000000000000000   r10: 0000000000007ff0   r11: 0000000000000000
>>>> (XEN) r12: ffff830421080250   r13: ffff830421060534   r14: ffff82c48029ff18
>>>> (XEN) r15: ffff82c4802dd9e0   cr0: 000000008005003b   cr4: 00000000000026f0
>>>> (XEN) cr3: 0000000300b81000   cr2: ffff880402070198
>>>> (XEN) ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: 0000   cs: e008
>>>> (XEN) Xen stack trace from rsp=ffff82c48029feb8:
>>>> (XEN)    0000000000000000 000000000000e030 ffff82c48029ff18 
>>>> ffff82c4802dd9e0
>>>> (XEN)    ffff8802cac3c7c0 00000000ffff3729 00000000ffff3729 
>>>> 000000013fff3728
>>>> (XEN)    ffffffff81b907c0 00000000ffff3729 00007d3b7fd600c7 
>>>> ffff82c48014de60
>>>> (XEN)    00000000ffff3729 ffffffff81b907c0 000000013fff3728 
>>>> 00000000ffff3729
>>>> (XEN)    ffffffff81a01e18 00000000ffff3729 0000000000000000 
>>>> 0000000000007ff0
>>>> (XEN)    0000000000000000 ffff88041820eb60 ffff8803fd1820a8 
>>>> ffffffff81b90a88
>>>> (XEN)    000000000000002a 000000000000002a 00000000ffff372a 
>>>> 0000002000000000
>>>> (XEN)    ffffffff8105dd5a 000000000000e033 0000000000000246 
>>>> ffffffff81a01db8
>>>> (XEN)    000000000000e02b 0000000000000000 0000000000000000 
>>>> 0000000000000000
>>>> (XEN)    0000000000000000 0000000000000000 ffff8300ca9a0000 
>>>> 0000000000000000
>>>> (XEN)    0000000000000000
>>>> (XEN) Xen call trace:
>>>> (XEN)    [<ffff82c48015e288>] smp_irq_move_cleanup_interrupt+0x1c3/0x23d
>>>> (XEN)
>>>> (XEN)
>>>> (XEN) ****************************************
>>>> (XEN) Panic on CPU 0:
>>>> (XEN) Assertion 'test_bit(vector, cfg->used_vectors)' failed at 
>>>> io_apic.c:542
>>>> (XEN) ****************************************
>>>
>>> To make sense of this, we need to know the register (and maybe
>>> stack) allocation at this point, to know which vector it was that
>>> triggered the assertion. You can either do this analysis for us, or
>>> point us at the xen-syms binary matching the xen.gz you used.
>>
>> "info scope smp_irq_move_cleanup_interrupt" said vector is in %rbx, so 0xe9.
> 
> And that system isn't using a strange mixed mode IO-APIC/legacy
> PIC model, where particularly IRQ 9 (usually ACPI SCI) gets
> channeled through the legacy PIC?

I don't know...

> Could you attach the complete log, ideally with 'i' output logged
> right before suspending?

Sure, attached.

> Is this reproducible with 4.2.x or 4.3-unstable? If not, but if readily
> reproducible with 4.1.5-rc1, could you try changing the containing
> loop's upper bound from "< NR_VECTORS" to
> "<= LAST_DYNAMIC_VECTOR"?

I've tried 4.2.x some time ago and bug also exists there (but I had not
console, so not sure if exactly the same). 4.3 seems to be not affected.

-- 
Best Regards / Pozdrawiam,
Marek Marczykowski
Invisible Things Lab

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