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[Xen-devel] Hypervisor Crash, xen4.1


  • To: xen-devel@xxxxxxxxxxxxxxxxxxx
  • From: sean bruno <seanwbruno@xxxxxxxxx>
  • Date: Sun, 22 May 2011 12:56:36 -0700
  • Delivery-date: Sun, 22 May 2011 12:58:07 -0700
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  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

Playing around with freebsd non-Xen DomU kernels in hvm mode on the new
4.1 hypervisor with a NetBSD -Current Dom0.  I keep getting some
gruesome crashes on it that look like
this:

(XEN) ----[ Xen-4.1.0  x86_64  debug=n  Not tainted ]----
(XEN) CPU:    1
(XEN) RIP:    e008:[<ffff82c4801057a9>] notify_via_xen_event_channel+0x5f/0x91
(XEN) RFLAGS: 0000000000010246   CONTEXT: hypervisor
(XEN) rax: 0000000000000000   rbx: 0000000000000001   rcx: 0000010300000000
(XEN) rdx: 0000000000000000   rsi: 0000000000000000   rdi: ffff83021f98a188
(XEN) rbp: ffff83021f98a000   rsp: ffff83021f257be8   r8:  0000000000000004
(XEN) r9:  000000000000000d   r10: 0000000000000001   r11: ffff83021f98a7a8
(XEN) r12: ffff83021f98a188   r13: 0000000000000001   r14: 0000000000000000
(XEN) r15: 0000000000000001   cr0: 000000008005003b   cr4: 00000000000026f0
(XEN) cr3: 000000020e945000   cr2: 0000010300000088
(XEN) ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: 0000   cs: e008
(XEN) Xen stack trace from rsp=ffff83021f257be8:
(XEN)    ffff830215f49000 ffff8300d78dc000 ffff8300d78dc000 ffff82c4801997f3
(XEN)    0000000000000001 0000000000000001 ffff830215f49000 ffff82c4801967ab
(XEN)    ffff83021f257c84 ffff83021f257cf0 0000000000000064 0000000000000000
(XEN)    ffff830215f49000 ffff83021f257cf8 ffff82c4801a5abd ffff8300d78dc000
(XEN)    ffff83021f98a2c0 0000000000000000 ffff8300d78dc000 0000000100000007
(XEN)    ffff8300d78dc000 0000000000000001 ffff83021f257f18 ffff8300d78dc000
(XEN)    ffff83021f257cf8 ffff83021f257f18 000000000000001e ffff82c480196d94
(XEN)    0000000000000000 ffff83021f257cf8 0000000000000010 ffff82c4801a05b4
(XEN)    ffff83021f257cf8 0000000000000001 0000000012ff8525 0000000000000000
(XEN)    0000000000000000 ffff8300d78dc000 000000000000001e ffff82c4801b3d75
(XEN)    ffff82c480199daf ffff8300d78dc000 ffff8300d78dc000 ffff82c480291fc0
(XEN)    ffff82c4801b0961 0000000000000001 ffff82c480149817 ffff82c480149817
(XEN)    0000000000000002 0000000000000000 ffff8302195f5ee0 ffff83021f257db0
(XEN)    ffff82c4802a36c0 ffff82c4802a36c0 ffff82c480115e39 ffff82c4802a44c0
(XEN)    00000000dfc6c000 0000000000000002 0000000000000000 ffff8300d78dc000
(XEN)    0000058334f81c83 ffff8300d78dc000 ffff82c4802a36c0 0000058334f820c3
(XEN)    ffff83021f257e70 ffff83021f2e45b0 ffff83021f2cc060 ffff82c48012064b
(XEN)    ffff82c48016bfeb 0000000000000000 0000000000000000 000005832fcc9a59
(XEN)    ffff8300d78dc000 ffff8300dfafc000 0000000000000001 0000000001c9c380
(XEN)    0000058334f820c3 ffff83021f2cc040 ffff82c48011c908 ffff82c4801a89eb
(XEN) Xen call trace:
(XEN)    [<ffff82c4801057a9>] notify_via_xen_event_channel+0x5f/0x91
(XEN)    [<ffff82c4801997f3>] hvm_send_assist_req+0x72/0xd1
(XEN)    [<ffff82c4801967ab>] hvmemul_do_io+0x4c1/0x6b7
(XEN)    [<ffff82c4801a5abd>] vlapic_has_pending_irq+0x2c/0x59
(XEN)    [<ffff82c480196d94>] hvmemul_do_pio+0x27/0x2c
(XEN)    [<ffff82c4801a05b4>] handle_pio+0x60/0xce
(XEN)    [<ffff82c4801b3d75>] vmx_vmexit_handler+0x87c/0x1b87
(XEN)    [<ffff82c480199daf>] hvm_do_resume+0x11/0x14b
(XEN)    [<ffff82c4801b0961>] vmx_do_resume+0x12d/0x1fc
(XEN)    [<ffff82c480149817>] context_switch+0x136/0xe8e
(XEN)    [<ffff82c480149817>] context_switch+0x136/0xe8e
(XEN)    [<ffff82c480115e39>] csched_vcpu_wake+0x13f/0x2e1
(XEN)    [<ffff82c48012064b>] add_entry+0x4a/0xa7
(XEN)    [<ffff82c48016bfeb>] __update_vcpu_system_time+0x22e/0x26a
(XEN)    [<ffff82c48011c908>] schedule+0x1ee/0x553
(XEN)    [<ffff82c4801a89eb>] pt_update_irq+0x33/0x1d5
(XEN)    [<ffff82c4801a5abd>] vlapic_has_pending_irq+0x2c/0x59
(XEN)    [<ffff82c4801a132d>] hvm_vcpu_has_pending_irq+0x4d/0xa8
(XEN)    [<ffff82c4801add8c>] vmx_intr_assist+0x49/0x1fd
(XEN)    [<ffff82c4801adb86>] vmx_asm_do_vmentry+0x0/0xda
(XEN)
(XEN) Pagetable walk from 0000010300000088:
(XEN)  L4[0x002] = 0000000000000000 ffffffffffffffff
(XEN)
(XEN) ****************************************
(XEN) Panic on CPU 1:
(XEN) FATAL PAGE FAULT
(XEN) [error_code=0000]
(XEN) Faulting linear address: 0000010300000088
(XEN) ****************************************
(XEN)




---------------

(XEN) emulate.c:139:d8 WARNING: io already pending (4)?
(XEN) Xen BUG at io.c:242
(XEN) ----[ Xen-4.1.0  x86_64  debug=n  Not tainted ]----
(XEN) CPU:    1
(XEN) RIP:    e008:[<ffff82c4801a05bd>] handle_pio+0x69/0xce
(XEN) RFLAGS: 0000000000010293   CONTEXT: hypervisor
(XEN) rax: 0000000000000001   rbx: 0000000000000001   rcx: ffff83021f2cc0d0
(XEN) rdx: 000000000000000a   rsi: 000000000000000a   rdi: ffff82c480228244
(XEN) rbp: ffff83021f257f18   rsp: ffff83021f257ce8   r8:  0000000000000001
(XEN) r9:  0000000000000000   r10: 00000000fffffffb   r11: ffff82c480132706
(XEN) r12: ffff8300d78d8000   r13: ffff83021f257cf8   r14: ffff83021f257f18
(XEN) r15: 000000000000001e   cr0: 000000008005003b   cr4: 00000000000026f0
(XEN) cr3: 00000002105b4000   cr2: 00000008079c0000
(XEN) ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: 0000   cs: e008
(XEN) Xen stack trace from rsp=ffff83021f257ce8:
(XEN)    ffff83021f257cf8 0000000000000001 0000000000000000 0000000000000000
(XEN)    0000000000000000 ffff8300d78d8000 000000000000001e ffff82c4801b3d75
(XEN)    ffff82c480199e9b ffff8300d78d8000 ffff8300d78d8000 ffff82c480291fc0
(XEN)    ffff82c4801b0961 0000000000000001 ffff82c480149817 ffff82c480149817
(XEN)    0000000000000002 0000000000000000 ffff83021549fcb0 ffff83021f257db0
(XEN)    ffff82c4802a36c0 ffff82c4802a36c0 ffff82c480115e39 0000000000000000
(XEN)    0000000000000000 0000000000000040 ffff82c480145047 ffff83021549fcb0
(XEN)    ffff83021f2d44c0 ffff82c480115902 ffff82c4802a36c0 000097742444678e
(XEN)    ffff83021f257e70 ffff83021f2e45b0 ffff83021f2cc060 ffff82c48012064b
(XEN)    ffff82c48016bfeb 0000000000000002 0000000000000000 000097740e66c72c
(XEN)    ffff8300d78d8000 ffff8300dfafc000 0000000000000001 0000000001c9c380
(XEN)    000097742444678e ffff82c48014880c ffff8300d78d9790 ffff82c4801a89eb
(XEN)    000097742445bed9 ffff82c4801a8476 ffff8300d78d8000 ffff8300d78d9868
(XEN)    ffff82c4801a5abd ffff8300d78d8000 ffff83020db3c2c0 ffff82c4801a132d
(XEN)    ffff8300d78d8000 ffff8300d78d8000 fffffe0002a95450 ffff82c4801add8c
(XEN)    ffff82c480280480 ffff82c480284480 0000000000000001 ffff8300d78d8000
(XEN)    ffffff800004faa0 ffffffff80cdacc0 ffffff80f7481cc0 000000000001a3c2
(XEN)    ffffffff80cd8ee0 ffff82c4801adb86 ffffffff80cd8ee0 000000000001a3c2
(XEN)    ffffff80f7481cc0 ffffffff80cdacc0 ffffff800004faa0 ffffffff80ed9480
(XEN)    0000000000010000 fffffe0002a95450 0000000000000000 fffffe0002b2ec80
(XEN) Xen call trace:
(XEN)    [<ffff82c4801a05bd>] handle_pio+0x69/0xce
(XEN)    [<ffff82c4801b3d75>] vmx_vmexit_handler+0x87c/0x1b87
(XEN)    [<ffff82c480199e9b>] hvm_do_resume+0xfd/0x14b
(XEN)    [<ffff82c4801b0961>] vmx_do_resume+0x12d/0x1fc
(XEN)    [<ffff82c480149817>] context_switch+0x136/0xe8e
(XEN)    [<ffff82c480149817>] context_switch+0x136/0xe8e
(XEN)    [<ffff82c480115e39>] csched_vcpu_wake+0x13f/0x2e1
(XEN)    [<ffff82c480145047>] __find_next_bit+0x56/0x5f
(XEN)    [<ffff82c480115902>] csched_schedule+0x1b1/0x5a9
(XEN)    [<ffff82c48012064b>] add_entry+0x4a/0xa7
(XEN)    [<ffff82c48016bfeb>] __update_vcpu_system_time+0x22e/0x26a
(XEN)    [<ffff82c48014880c>] vcpu_kick+0x15/0x66
(XEN)    [<ffff82c4801a89eb>] pt_update_irq+0x33/0x1d5
(XEN)    [<ffff82c4801a8476>] pt_timer_fn+0x22/0x2b
(XEN)    [<ffff82c4801a5abd>] vlapic_has_pending_irq+0x2c/0x59
(XEN)    [<ffff82c4801a132d>] hvm_vcpu_has_pending_irq+0x4d/0xa8
(XEN)    [<ffff82c4801add8c>] vmx_intr_assist+0x49/0x1fd
(XEN)    [<ffff82c4801adb86>] vmx_asm_do_vmentry+0x0/0xda
(XEN)
(XEN)
(XEN) ****************************************
(XEN) Panic on CPU 1:
(XEN) Xen BUG at io.c:242
(XEN) ****************************************
(XEN)
(XEN) Reboot in five seconds...
(XEN) Resetting with ACPI MEMORY or I/O RESET_REG

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