Re: [Xen-devel] Crash in acpi_ps_peek_opcode when booting kernel 3.19 as Xen dom0

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On 09.02.2015 14:07, Stefan Bader wrote:
> On 05.02.2015 20:36, Konrad Rzeszutek Wilk wrote:
>> On Thu, Feb 05, 2015 at 03:33:02PM +0100, Stefan Bader wrote:
>>> While experimenting/testing various kernel versions I discovered that trying to
>>> boot a Haswell based hosts will always crash when booting as Xen dom0
>>> (Xen-4.4.1). The same crash happens since v3.19-rc1 and still does happen with
>>> v3.19-rc7. A bare metal boot is having no issues and also an Opteron based host
>>> is having no issues (dom0 and bare metal).
>>> Could be a table that the other host does not have and since its only happening
>>> in dom0 maybe some cpu capability that needs to be passed on?
>>
>> Usually it means that the ACPI AML code is trying to do something with
>> the IOAPIC or something wihch is not accessible.
>>
>> But this on the other hand looks to be trying to execute some AML code
>> that is unknown. Any chance you cna disassemble it and perhaps also
>> run with acpi debug options on to figure out where it blows up?
> 
> The weird thing here is that bare-metal on the same machine does work. And
> previous kernels did work as well. So I think we can assume the ACPI tables are
> ok. It could even be a red-herring. Well, likely is as booting with acpi=off
> does hang instead of crashing.
> 
> Since I got no clue, I did what we always do when we are dumbfound, I went ahead
> and bisected 3.18..3.19-rc1. Unfortunately the very last kernel I build was
> something in between good and bad. Good as it did not crash exactly but bad as
> it did not come up in a usable state. So I would not be sure the claimed to be
> offending commit is right. Could be one in the range of:
> 
> G  * xen: use common page allocation function in p2m.c
>    * xen: Delay remapping memory of pv-domain
> g  * xen: Delay m2p_override initialization
> -> * xen: Delay invalidating extra memory
> B  * x86: Introduce function to get pmd entry pointer
> 
> (G) really good, (g) somewhat not bad, (B) bad, (->) claimed first broken.

Oh, since that all sounds related to E820 in some way:

(XEN) Xen-e820 RAM map:
(XEN)  0000000000000000 - 000000000009a400 (usable)
(XEN)  000000000009a400 - 00000000000a0000 (reserved)
(XEN)  00000000000e0000 - 0000000000100000 (reserved)
(XEN)  0000000000100000 - 0000000030a48000 (usable)
(XEN)  0000000030a48000 - 0000000030a49000 (reserved)
(XEN)  0000000030a49000 - 00000000a27f4000 (usable)
(XEN)  00000000a27f4000 - 00000000a2ab4000 (reserved)
(XEN)  00000000a2ab4000 - 00000000a2fb4000 (ACPI NVS)
(XEN)  00000000a2fb4000 - 00000000a2feb000 (ACPI data)
(XEN)  00000000a2feb000 - 00000000a3000000 (usable)
(XEN)  00000000a3000000 - 00000000afa00000 (reserved)
(XEN)  00000000e0000000 - 00000000f0000000 (reserved)
(XEN)  00000000fec00000 - 00000000fec01000 (reserved)
(XEN)  00000000fed00000 - 00000000fed04000 (reserved)
(XEN)  00000000fed10000 - 00000000fed1a000 (reserved)
(XEN)  00000000fed1c000 - 00000000fed20000 (reserved)
(XEN)  00000000fed84000 - 00000000fed85000 (reserved)
(XEN)  00000000fee00000 - 00000000fee01000 (reserved)
(XEN)  00000000ffc00000 - 0000000100000000 (reserved)
(XEN)  0000000100000000 - 000000024e600000 (usable)

and how it looks with a 3.18 boot:

[    0.000000] e820: BIOS-provided physical RAM map:
[    0.000000] Xen: [mem 0x0000000000000000-0x0000000000099fff] usable
[    0.000000] Xen: [mem 0x000000000009a400-0x00000000000fffff] reserved
[    0.000000] Xen: [mem 0x0000000000100000-0x0000000030a47fff] usable
[    0.000000] Xen: [mem 0x0000000030a48000-0x0000000030a48fff] reserved
[    0.000000] Xen: [mem 0x0000000030a49000-0x00000000a27f3fff] usable
[    0.000000] Xen: [mem 0x00000000a27f4000-0x00000000a2ab3fff] reserved
[    0.000000] Xen: [mem 0x00000000a2ab4000-0x00000000a2fb3fff] ACPI NVS
[    0.000000] Xen: [mem 0x00000000a2fb4000-0x00000000a2feafff] ACPI data
[    0.000000] Xen: [mem 0x00000000a2feb000-0x00000000a2ffffff] usable
[    0.000000] Xen: [mem 0x00000000a3000000-0x00000000af9fffff] reserved
[    0.000000] Xen: [mem 0x00000000e0000000-0x00000000efffffff] reserved
[    0.000000] Xen: [mem 0x00000000fec00000-0x00000000fec00fff] reserved
[    0.000000] Xen: [mem 0x00000000fed00000-0x00000000fed03fff] reserved
[    0.000000] Xen: [mem 0x00000000fed10000-0x00000000fed19fff] reserved
[    0.000000] Xen: [mem 0x00000000fed1c000-0x00000000fed1ffff] reserved
[    0.000000] Xen: [mem 0x00000000fed84000-0x00000000fed84fff] reserved
[    0.000000] Xen: [mem 0x00000000fee00000-0x00000000feefffff] reserved
[    0.000000] Xen: [mem 0x00000000ffc00000-0x00000000ffffffff] reserved
[    0.000000] Xen: [mem 0x0000000100000000-0x00000001bdc59fff] usable
[    0.000000] Xen: [mem 0x00000001bdc5a000-0x000000024e5fffff] unusable

Not sure that helps much. I probably have to try comparing later output. But
that will need a bit of time.

-Stefan

> 
> So it seems one of the delaying changes has a very bad effect on that Sharkbay.
> A bit odd since none of those sounds Intel/AMD geared. Could only be a different
> usage of memory (my AMD box has considerably more memory and also no CPU with
> GPU functionality as the Haswell).
> 
> Jürgen, maybe some description that might trigger an idea for you...?
> 
> -Stefan
> 
> ---
> 
> git bisect start
> # good: [b2776bf7149bddd1f4161f14f79520f17fc1d71d] Linux 3.18
> git bisect good b2776bf7149bddd1f4161f14f79520f17fc1d71d
> # bad: [97bf6af1f928216fd6c5a66e8a57bfa95a659672] Linux 3.19-rc1
> git bisect bad 97bf6af1f928216fd6c5a66e8a57bfa95a659672
> # good: [70e71ca0af244f48a5dcf56dc435243792e3a495] Merge
> git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
> git bisect good 70e71ca0af244f48a5dcf56dc435243792e3a495
> # good: [988adfdffdd43cfd841df734664727993076d7cb] Merge branch 'drm-next' of
> git://people.freedesktop.org/~airlied/linux
> git bisect good 988adfdffdd43cfd841df734664727993076d7cb
> # good: [b024793188002b9eed452b5f6a04d45003ed5772] staging: rtl8723au:
> phy_SsPwrSwitch92CU() was never called with bRegSSPwrLvl != 1
> git bisect good b024793188002b9eed452b5f6a04d45003ed5772
> # bad: [66dcff86ba40eebb5133cccf450878f2bba102ef] Merge tag 'for-linus' of
> git://git.kernel.org/pub/scm/virt/kvm/kvm
> git bisect bad 66dcff86ba40eebb5133cccf450878f2bba102ef
> # bad: [d6666be6f0c43efb9475d1d35fbef9f8be61b7b1] Merge tag 'for-linus-20141215'
> of git://git.infradead.org/linux-mtd
> git bisect bad d6666be6f0c43efb9475d1d35fbef9f8be61b7b1
> # bad: [94bbdb63d7ed5ca56b788e43d0ca4a8f9494c9e7] Merge tag 'fixes-for-linus' of
> git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
> git bisect bad 94bbdb63d7ed5ca56b788e43d0ca4a8f9494c9e7
> # good: [2dbfca5a181973558277b28b1f4c36362291f5e0] Merge branch 'for-next' of
> git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds
> git bisect good 2dbfca5a181973558277b28b1f4c36362291f5e0
> # bad: [0db2812a5240f2663b92d8d4b761122dd2e0c6c3] Merge
> git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile
> git bisect bad 0db2812a5240f2663b92d8d4b761122dd2e0c6c3
> # bad: [f1d04b23b2015b4c3c0a8419677179b133afea08] Merge branch
> 'devel/for-linus-3.19' into stable/for-linus-3.19
> git bisect bad f1d04b23b2015b4c3c0a8419677179b133afea08
> # bad: [792230c3a66b3d17d6dcca712866d24f2283d4a6] x86: Introduce function to get
> pmd entry pointer
> git bisect bad 792230c3a66b3d17d6dcca712866d24f2283d4a6
> # good: [7108c9ce8f6e59f775b0c8250dba52b569b6cba2] xen: use common page
> allocation function in p2m.c
> # NOTE: This was the last really good
> git bisect good 7108c9ce8f6e59f775b0c8250dba52b569b6cba2
> # good: [97f4533a60ce5d0cb35ff44a190111f81a987620] xen: Delay m2p_override
> initialization
> # NOTE: This revision did not crash the usual way but was not useable either
> # NOTE: Use of wrong bits in page-tables.
> git bisect good 97f4533a60ce5d0cb35ff44a190111f81a987620
>>
>>>
>>> [    2.108038] ACPI: Core revision 20141107
>>> [    2.108153] ACPI Warning: Unsupported module-level executable opcode 0x91 at
>>> table offset 0x002B (20141107/psloop-225)
>>> [    2.108264] ACPI Warning: Unsupported module-level executable opcode 0x91 at
>>> table offset 0x0033 (20141107/psloop-225)
>>> [    2.108375] ACPI Warning: Unsupported module-level executable opcode 0x95 at
>>> table offset 0x0038 (20141107/psloop-225)
>>> [    2.108489] ACPI Warning: Unsupported module-level executable opcode 0x95 at
>>> table offset 0x0041 (20141107/psloop-225)
>>> [    2.108613] ACPI Warning: Unsupported module-level executable opcode 0x7D at
>>> table offset 0x040D (20141107/psloop-225)
>>> [    2.108751] BUG: unable to handle kernel paging request at ffffc90000ee74e0
>>> [    2.108835] IP: [<ffffffff814573db>] acpi_ps_peek_opcode+0xd/0x1f
>>> [    2.108902] PGD 1f4be067 PUD 1f4bd067 PMD 1488f067 PTE 0
>>> [    2.109018] Oops: 0000 [#1] SMP
>>> [    2.109094] Modules linked in:
>>> [    2.109153] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.19.0-031900rc7-generi
>>> c #201502020035
>>> [    2.109220] Hardware name: Intel Corporation Shark Bay Client platform/Flathe
>>> ad Creek Crb, BIOS HSWLPTU1.86C.0109.R03.1301282055 01/28/2013
>>> [    2.109295] task: ffffffff81c1c500 ti: ffffffff81c00000 task.ti: ffffffff81c0
>>> 0000
>>> [    2.109360] RIP: e030:[<ffffffff814573db>]  [<ffffffff814573db>] acpi_ps_peek
>>> _opcode+0xd/0x1f
>>> [    2.109445] RSP: e02b:ffffffff81c03ce8  EFLAGS: 00010283
>>> [    2.109490] RAX: 000000000000000c RBX: ffff880014887000 RCX: ffffffff81c03d50
>>> [    2.109539] RDX: ffffc90000ee74e0 RSI: ffff880014887030 RDI: ffff880014887030
>>> [    2.109587] RBP: ffffffff81c03ce8 R08: ffffea0000522600 R09: ffffffff81432c4f
>>> [    2.109635] R10: ffff880014899090 R11: 00000000000000ba R12: ffff880014887030
>>> [    2.109684] R13: ffff880014887000 R14: ffffffff81c03d50 R15: 000000000000000d
>>> [    2.109735] FS:  0000000000000000(0000) GS:ffff880018c00000(0000) knlGS:00000
>>> 00000000000
>>> [    2.109836] CS:  e033 DS: 0000 ES: 0000 CR0: 0000000080050033
>>> [    2.109881] CR2: ffffc90000ee74e0 CR3: 0000000001c15000 CR4: 0000000000042660
>>> [    2.109930] Stack:
>>> [    2.109968]  ffffffff81c03d38 ffffffff81456537 ffffffff81c03d28 ffffffff81457
>>> a40
>>> [    2.110104]  ffff880014887000 ffff880014887000 ffff8800148990c0 ffffc90000ee7
>>> 4e0
>>> [    2.110238]  ffff880014887030 0000000000000000 ffffffff81c03d78 ffffffff81456
>>> 760
>>> [    2.110373] Call Trace:
>>> [    2.110413]  [<ffffffff81456537>] acpi_ps_get_next_arg+0x114/0x1f9
>>> [    2.110461]  [<ffffffff81457a40>] ? acpi_ps_pop_scope+0x54/0x72
>>> [    2.110508]  [<ffffffff81456760>] acpi_ps_get_arguments+0x91/0x228
>>> [    2.110555]  [<ffffffff81456ad2>] acpi_ps_parse_loop+0x1db/0x311
>>> [    2.110602]  [<ffffffff81457705>] acpi_ps_parse_aml+0x96/0x275
>>> [    2.110649]  [<ffffffff8145322f>] acpi_ns_one_complete_parse+0xf7/0x114
>>> [    2.110698]  [<ffffffff817d149a>] ? _raw_spin_lock_irqsave+0x1a/0x60
>>> [    2.110746]  [<ffffffff8145326c>] acpi_ns_parse_table+0x20/0x38
>>> [    2.110792]  [<ffffffff81452c20>] acpi_ns_load_table+0x4c/0x90
>>> [    2.110840]  [<ffffffff817c50b5>] acpi_tb_load_namespace+0xa6/0x14a
>>> [    2.110889]  [<ffffffff81d83269>] acpi_load_tables+0xc/0x35
>>> [    2.110935]  [<ffffffff81454bf6>] ? acpi_ns_get_node+0xb7/0xc9
>>> [    2.110982]  [<ffffffff81d825cf>] acpi_early_init+0x73/0x105
>>> [    2.111029]  [<ffffffff81d3b083>] start_kernel+0x348/0x3f0
>>> [    2.111075]  [<ffffffff81d3abcd>] ? set_init_arg+0x56/0x56
>>> [    2.111121]  [<ffffffff81d3a5f8>] x86_64_start_reservations+0x2a/0x2c
>>> [    2.111169]  [<ffffffff81d3e88c>] xen_start_kernel+0x4f5/0x4f7
>>> [    2.111215] Code: 8a 87 60 05 87 81 5d c3 e8 73 cc 37 00 55 81 ff 00 01 00 00
>>>  19 c0 48 89 e5 83 c0 02 5d c3 e8 5d cc 3
>>>
>>
>>
>>
>>> _______________________________________________
>>> Xen-devel mailing list
>>> Xen-devel@xxxxxxxxxxxxx
>>> http://lists.xen.org/xen-devel
>>
> 
> 


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