Re: [Xen-devel] Re: [xen-unstable test] 7577: regressions - FAIL

[Tim Deegan <Tim.Deegan@xxxxxxxxxx>]

At 10:55 +0100 on 15 Jun (1308135332), Ian Jackson wrote:
> Ian Jackson writes ("[xen-unstable test] 7577: regressions - FAIL"):
> >  test-amd64-amd64-xl          11 guest-localmigrate     fail   REGR. vs. 
> > 7285
> 
> Hypervisor crash.

Yay!  I was trying to reproduce this and seeing a problem with old
domains not dying (looked like a refcount error) but I couldn't make
that go away by going back to much older hypervisors than the "good"
one. 

This looks much more tractable. :)

Tim.

>  Assertion 'paging_mode_translate(p2m->domain)' failed at p2m-pt.c:686
>  ----[ Xen-4.2-unstable  x86_64  debug=y  Not tainted ]----
>  CPU:    6
>  RIP:    e008:[<ffff82c4801d243c>] p2m_gfn_to_mfn+0x36/0x8e8
>  RFLAGS: 0000000000010246   CONTEXT: hypervisor
>  rax: ffff830239e63000   rbx: ffff8302392e7b68   rcx: ffff8302392e78d8
>  rdx: ffff8302392e78dc   rsi: 0000000000203f58   rdi: ffff83023e6d5d30
>  rbp: ffff8302392e7868   rsp: ffff8302392e7818   r8:  0000000000000002
>  r9:  00000000002050ff   r10: 00ff00ff00ff00ff   r11: 0f0f0f0f0f0f0f0f
>  r12: ffff83023e6d5d30   r13: 0000000000000002   r14: 0000000000203f58
>  r15: ffff83023e6d5d30   cr0: 000000008005003b   cr4: 00000000000026f4
>  cr3: 000000017d28a000   cr2: ffff88000759f5e0
>  ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: e010   cs: e008
>  Xen stack trace from rsp=ffff8302392e7818:
>     ffff8302392e78dc 0000000039e63000 7000000000000000 ffff82f60479cec0
>     000000000023ce76 ffff8302392e7b68 ffff8300bf687000 0000000000000000
>     0000000000203f58 ffff83023e6d5d30 ffff8302392e7908 ffff82c4801d8fbf
>     00000002392e7f18 ffff88000759f5e0 0000000000000880 ffff82f6040a1480
>     00000000002050a4 ffff830239e63000 ffff82f6040a1490 0000000000000100
>     ffff8140a0502000 0000000300800167 0000000000800000 0000000000000000
>     000000000023ce76 ffff8302392e7c38 ffff8300bf687000 0000000000000000
>     ffff8300bf687000 ffff830239e63000 ffff8302392e7be8 ffff82c480200f37
>     ffff8140a0502000 ffff82c480164814 ffff8302392c3000 ffff8302392e7f18
>     ffff82c4802d9668 ffff8302392e7f18 ffff8302392e7f18 ffff8302392e7f18
>     ffff8302392e7f18 ffff82c4802d9660 ffff8300bf2f5000 0000000000000000
>     ffff8302392e7a08 ffff8302392e7c38 ffff88000759f5e0 ffff82c48016eb45
>     ffff830239e63ab0 ffff830239e63220 800000023dcc0165 000000000023ba5a
>     ffff830239e63b20 0000000000000cf8 00000000000001d0 0000000000000000
>     0000000000000880 0000000000000008 00000000000000f0 ffff8300bf687920
>     ffff830239e63ab0 ffff8302392e7e68 ffff8302392e7a58 ffff82c48016ec22
>     ffff880002e75dc8 0000000000000000 800000023dcc0165 000ffff88000759f
>     0000000000000000 0000000000000000 0000000000000049 0000000000000049
>     ffff8302392e7e58 ffff82c480190e3b 0000000000000000 ffff830239e63000
>     ffff8302392e7ae8 0000000280167c7c 00000000c6d18547 0000000000000100
>  Xen call trace:
>     [<ffff82c4801d243c>] p2m_gfn_to_mfn+0x36/0x8e8
>     [<ffff82c4801d8fbf>] guest_walk_tables_4_levels+0x192/0x863
>     [<ffff82c480200f37>] sh_page_fault__guest_4+0x599/0x2212
>     [<ffff82c480181522>] do_page_fault+0x3d3/0x594
>     [<ffff82c48021332e>] handle_exception_saved+0x30/0x6e
>     [<ffff82c48018201c>] __copy_to_user_ll+0x2c/0x39
>     [<ffff82c480154056>] update_runstate_area+0xfc/0xff
>     [<ffff82c480157b04>] context_switch+0xda1/0xdc6
>     [<ffff82c48012242c>] schedule+0x5fc/0x624
>     [<ffff82c4801236a7>] __do_softirq+0x88/0x99
>     [<ffff82c480123722>] do_softirq+0x6a/0x7a
>     [<ffff82c4801561f5>] idle_loop+0x64/0x69
>     
>  
>  ****************************************
>  Panic on CPU 6:
>  Assertion 'paging_mode_translate(p2m->domain)' failed at p2m-pt.c:686
>  ****************************************
> 
> Ian.
> 
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-- 
Tim Deegan <Tim.Deegan@xxxxxxxxxx>
Principal Software Engineer, Xen Platform Team
Citrix Systems UK Ltd.  (Company #02937203, SL9 0BG)

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