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[Xen-devel] (XEN) Xen BUG at amd_nonfatal.c:165 on a new amd g34 board

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Subject: [Xen-devel] (XEN) Xen BUG at amd_nonfatal.c:165 on a new amd g34 board
From: Luke S Crawford <lsc@xxxxxxxxx>
Date: 06 May 2010 21:45:23 -0400
Delivery-date: Thu, 06 May 2010 18:45:51 -0700
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so I get this on bootup right after detecting USB.  this is using the dom0 kernel.   I got the same results with the 3.4.3-rc6 xen

Ideas on what the problem might be?  looking at amd_nonfatal it seems that
the MCE code is in an impossible state?

(XEN) Xen BUG at amd_nonfatal.c:165
(XEN) ----[ Xen-3.4.2  x86_64  debug=n  Not tainted ]----
(XEN) CPU:    0
(XEN) RIP:    e008:[<ffff828c801778f9>] mce_amd_work_fn+0x1d9/0x1f0
(XEN) RFLAGS: 0000000000010246   CONTEXT: hypervisor
(XEN) rax: 0000000000000ffe   rbx: ffff828c8024ff28   rcx: 0000000000000000
(XEN) rdx: c0080ffe01000000   rsi: 0000000000000413   rdi: 0000000000000000
(XEN) rbp: 000000025f13f8e0   rsp: ffff828c8024fe60   r8:  ffff828c8028f800
(XEN) r9:  0000000000000000   r10: 0000000000000005   r11: 0000000000000000
(XEN) r12: 0000000000000000   r13: ffff828c80177720   r14: ffff83081fd7b190
(XEN) r15: ffff83081fd7b190   cr0: 000000008005003b   cr4: 00000000000006f0
(XEN) cr3: 00000004ca4a6000   cr2: 000000000083c770
(XEN) ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: e010   cs: e008
(XEN) Xen stack trace from rsp=ffff828c8024fe60:
(XEN)    0000000000000000 c0080ffe01000000 ffff828c80221180 ffff828c8011a12c
(XEN)    ffff8300dfc2c060 ffff828c80221180 ffff83081fd7b198 ffff828c8011a20d
(XEN)    000000024ab06880 0000000000000000 ffff828c8024ff28 ffff828c80267900
(XEN)    ffff828c80266900 0000000000000000 ffff828c80221100 ffff828c801185b8
(XEN)    000000000000e008 ffff828c8024ff28 ffff828c80266900 ffff828c802215b0
(XEN)    000000025e3b7f20 ffff828c80138fcc 0000000000000000 ffff8300dfafc000
(XEN)    ffff8300dfc2c000 0000000000000000 0000000000000000 0000000000000000
(XEN)    0000000000000000 0000000000000000 0000000000000000 0000000000000246
(XEN)    0000000000000008 00000000ffff8e54 0000000000000054 0000000000000000
(XEN)    ffffffff802053aa 0000000000000001 0000000000000000 0000000000000001
(XEN)    0000010000000000 ffffffff802053aa 000000000000e033 0000000000000246
(XEN)    ffffffff80511f50 000000000000e02b 0000000000000000 0000000000000000
(XEN)    0000000000000000 0000000000000000 0000000000000000 ffff8300dfafc000
(XEN) Xen call trace:
(XEN)    [<ffff828c801778f9>] mce_amd_work_fn+0x1d9/0x1f0
(XEN)    [<ffff828c8011a12c>] execute_timer+0x2c/0x50
(XEN)    [<ffff828c8011a20d>] timer_softirq_action+0xbd/0x2e0
(XEN)    [<ffff828c801185b8>] do_softirq+0x58/0x80
(XEN)    [<ffff828c80138fcc>] idle_loop+0x4c/0xa0
(XEN) ****************************************
(XEN) Panic on CPU 0:
(XEN) Xen BUG at amd_nonfatal.c:165
(XEN) ****************************************
(XEN) Reboot in five seconds...

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