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Re: [Xen-devel] hypervisor crash with latest xen-unstable
| To: | Juergen Gross <juergen.gross@xxxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] hypervisor crash with latest xen-unstable |
| From: | Keir Fraser <keir@xxxxxxx> |
| Date: | Fri, 26 Nov 2010 10:12:55 +0000 |
| Cc: | |
| Delivery-date: | Fri, 26 Nov 2010 02:14:21 -0800 |
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| Thread-topic: | [Xen-devel] hypervisor crash with latest xen-unstable |
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Fixed by xen-unstable:22342.
K.
On 25/11/2010 10:27, "Juergen Gross" <juergen.gross@xxxxxxxxxxxxxx> wrote:
> Hi,
>
> latest xen-unstable crashed when I tried to remove a cpu from a cpupool via
>
> xl cpupool-cpu-remove
>
> Serial log shows:
>
> (XEN) Assertion '!(((*({ unsigned long __ptr; __asm__ ("" : "=r"(__ptr) :
> "0"(&per_cpu____preempt_count)); (typeof(&per_cpu____preempt_count)) (__ptr +
> (get_cpu_info()->per_cpu_offset)); }))) ||
> ((irq_stat[(((get_cpu_info()->processor_id)))].__local_irq_count) != 0) ||
> !local_irq_is_enabled())' failed at softirq.c:61
> (XEN) ----[ Xen-4.1-unstable x86_64 debug=y Tainted: C ]----
> (XEN) CPU: 5
> (XEN) RIP: e008:[<ffff82c4801212f9>] do_softirq+0x51/0x7a
> (XEN) RFLAGS: 0000000000010202 CONTEXT: hypervisor
> (XEN) rax: ffff82c4802ca2a0 rbx: ffff8300780da000 rcx: ffff82c4802a7080
> (XEN) rdx: 00000043b9aefd80 rsi: ffff830839db7ec0 rdi: ffff82c48024d0e0
> (XEN) rbp: ffff830839db7f08 rsp: ffff830839db7f08 r8: 0000000000000005
> (XEN) r9: 0000ffff0000ffff r10: 00000000deadbeef r11: 0f0f0f0f0f0f0f0f
> (XEN) r12: ffff8803f8f61440 r13: ffff8803fdf4fe58 r14: 0000000000000000
> (XEN) r15: 00007fff335d7150 cr0: 0000000080050033 cr4: 00000000000026f0
> (XEN) cr3: 0000000846990000 cr2: 0000000000627048
> (XEN) ds: 0000 es: 0000 fs: 0000 gs: 0000 ss: e010 cs: e008
> (XEN) Xen stack trace from rsp=ffff830839db7f08:
> (XEN) 00007cf7c62480c7 ffff82c480202736 00007fff335d7150 0000000000000000
> (XEN) ffff8803fdf4fe58 ffff8803f8f61440 ffffffffffffffda ffff8803fd491438
> (XEN) 0000000000000216 000000000061e004 000000000061d050 00007f6d701d9f6c
> (XEN) 0000000000000000 ffffffff8000346a 000000000061c2e0 0000000000624004
> (XEN) 00000000deadbeef 0000010000000000 ffffffff8000346a 000000000000e033
> (XEN) 0000000000000216 ffff8803fdf4fd80 000000000000e02b 0000000000000000
> (XEN) 0000000000000000 0000000000000000 0000000000000000 0000000000000005
> (XEN) ffff8300780da000 00000043b9aefd80 0000000000000000
> (XEN) Xen call trace:
> (XEN) [<ffff82c4801212f9>] do_softirq+0x51/0x7a
> (XEN)
>
> I suspect the waitqueue stuff broke the continue_hypercall_on_cpu() stuff.
>
>
> Juergen
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