thr3ads.net - Xen devel - [Xen-devel] d273:v3: reserved bit in page table (ec=0019) [Jul 2009]

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Christopher S. Aker

2009-Jul-16 16:21 UTC

[Xen-devel] d273:v3: reserved bit in page table (ec=0019)

Xen 3.3-testing @ changeset 18651, 64bit
dom0 2.6.18.8 @ changeset 888, PAE

Files: http://theshore.net/~caker/xen/BUGS/1.22/

(XEN) d273:v3: reserved bit in page table (ec=0019)
(XEN) Pagetable walk from 00000000c0101347:
(XEN)  L4[0x000] = 000000067c36a027 0000000000016495
(XEN)  L3[0x003] = 000000067c06c027 0000000000016793
(XEN)  L2[0x000] = 00001f5e9d00f403 ffffffffffffffff
(XEN) ----[ Xen-3.3.2-rc1  x86_64  debug=y  Not tainted ]----
(XEN) CPU:    5
(XEN) RIP:    e008:[<ffff828c801c7b50>] show_page_walk+0x1f8/0x244
(XEN) RFLAGS: 0000000000010206   CONTEXT: hypervisor
(XEN) rax: ffff830000000000   rbx: 0000000000000001   rcx: 0000000000003b1d
(XEN) rdx: 00001f5e9d00f808   rsi: 0000000000000101   rdi: ffff828c80287e70
(XEN) rbp: ffff8300cfcefe88   rsp: ffff8300cfcefe68   r8:  0000000000000004
(XEN) r9:  0000000000000000   r10: 00000000ffffffff   r11: 00000000fffffffe
(XEN) r12: 00000001f5e9d00f   r13: 00000000c0101347   r14: 00000000c0101347
(XEN) r15: 0000000000000000   cr0: 000000008005003b   cr4: 00000000000026b0
(XEN) cr3: 00000004ee806000   cr2: ffffa25e9d00f808
(XEN) ds: 007b   es: 007b   fs: 0000   gs: 0000   ss: 0000   cs: e008
(XEN) Xen stack trace from rsp=ffff8300cfcefe68:
(XEN)    ffff8300cfceff28 ffff8300cfceff28 00000000c0101347 0000000000000019
(XEN)    ffff8300cfcefea8 ffff828c8015a649 ffff8300cecce100 0000000000000019
(XEN)    ffff8300cfcefed8 ffff828c8015a7f4 ffff8300cfceff28 ffff8300cf7a8100
(XEN)    00000000c0101347 0000000000000019 ffff8300cfceff18 ffff828c8015eb46
(XEN)    0000000000000000 ffff8300cecce100 0000000000000000 0000000000000000
(XEN)    0000000000000000 0000000000000000 00007cff303100b7 ffff828c801c56db
(XEN)    0000000000000000 0000000000000000 0000000000000000 0000000000000000
(XEN)    00000000c13a9fac 00000000deadbeef 0000000000000000 0000000000000000
(XEN)    0000000000000000 0000000000000000 0000000000000000 00000000deadbeef
(XEN)    00000000deadbeef 00000000deadbeef 00000000c13a9f80 0000000e00000019
(XEN)    00000000c0101347 0000000000000061 0000000000010a07 00000000c13a9f20
(XEN)    0000000000000069 0000000000000000 0000000000000000 0000000000000000
(XEN)    0000000000000000 0000000000000005 ffff8300cecce100
(XEN) Xen call trace:
(XEN)    [<ffff828c801c7b50>] show_page_walk+0x1f8/0x244
(XEN)    [<ffff828c8015a649>] reserved_bit_page_fault+0x53/0x66
(XEN)    [<ffff828c8015a7f4>] propagate_page_fault+0x198/0x1ad
(XEN)    [<ffff828c8015eb46>] do_page_fault+0x516/0x52c
(XEN)
(XEN) Pagetable walk from ffffa25e9d00f808:
(XEN)  L4[0x144] = 0000000000000000 ffffffffffffffff
(XEN)
(XEN) ****************************************
(XEN) Panic on CPU 5:
(XEN) FATAL PAGE FAULT
(XEN) [error_code=0000]
(XEN) Faulting linear address: ffffa25e9d00f808
(XEN) ****************************************
(XEN)
(XEN) Reboot in five seconds...

-Chris

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel

Keir Fraser

2009-Jul-16 17:05 UTC

head link

Re: [Xen-devel] d273:v3: reserved bit in page table (ec=0019)

On 16/07/2009 17:21, "Christopher S. Aker" <caker@theshore.net>
wrote:
> Xen 3.3-testing @ changeset 18651, 64bit
> dom0 2.6.18.8 @ changeset 888, PAE
> 
> Files: http://theshore.net/~caker/xen/BUGS/1.22/
> 
> (XEN) d273:v3: reserved bit in page table (ec=0019)
Unexpected page fault due to a reserved bit set in a guest page directory
entry...
> (XEN) Pagetable walk from 00000000c0101347:
> (XEN)  L4[0x000] = 000000067c36a027 0000000000016495
> (XEN)  L3[0x003] = 000000067c06c027 0000000000016793
> (XEN)  L2[0x000] = 00001f5e9d00f403 ffffffffffffffff                     ^^^^^^^^^^^^^^^^
Bogus PDE -- the bottom 12 bits are potentially okay (although I don''t
think
Linux uses the _PAGE_AVAIL bits) but the physical address is definitely
bogus. Begs the question where the bogus PDE came from of course, since that
would be the actual bug. The crash report here is the symptom when the PDE
actually next gets used.

 -- Keir



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Jiang, Yunhong

2009-Jul-17 03:21 UTC

head link

RE: [Xen-devel] d273:v3: reserved bit in page table (ec=0019)

The full log will be helpful.

--jyh

-----Original Message-----
From: xen-devel-bounces@lists.xensource.com
[mailto:xen-devel-bounces@lists.xensource.com] On Behalf Of Christopher S. Aker
Sent: 2009年7月17日 0:21
To: xen devel
Subject: [Xen-devel] d273:v3: reserved bit in page table (ec=0019)

Xen 3.3-testing @ changeset 18651, 64bit dom0 2.6.18.8 @ changeset 888, PAE

Files: http://theshore.net/~caker/xen/BUGS/1.22/

(XEN) d273:v3: reserved bit in page table (ec=0019)
(XEN) Pagetable walk from 00000000c0101347:
(XEN)  L4[0x000] = 000000067c36a027 0000000000016495
(XEN)  L3[0x003] = 000000067c06c027 0000000000016793
(XEN)  L2[0x000] = 00001f5e9d00f403 ffffffffffffffff
(XEN) ----[ Xen-3.3.2-rc1  x86_64  debug=y  Not tainted ]----
(XEN) CPU:    5
(XEN) RIP:    e008:[<ffff828c801c7b50>] show_page_walk+0x1f8/0x244
(XEN) RFLAGS: 0000000000010206   CONTEXT: hypervisor
(XEN) rax: ffff830000000000   rbx: 0000000000000001   rcx: 0000000000003b1d
(XEN) rdx: 00001f5e9d00f808   rsi: 0000000000000101   rdi: ffff828c80287e70
(XEN) rbp: ffff8300cfcefe88   rsp: ffff8300cfcefe68   r8:  0000000000000004
(XEN) r9:  0000000000000000   r10: 00000000ffffffff   r11: 00000000fffffffe
(XEN) r12: 00000001f5e9d00f   r13: 00000000c0101347   r14: 00000000c0101347
(XEN) r15: 0000000000000000   cr0: 000000008005003b   cr4: 00000000000026b0
(XEN) cr3: 00000004ee806000   cr2: ffffa25e9d00f808
(XEN) ds: 007b   es: 007b   fs: 0000   gs: 0000   ss: 0000   cs: e008
(XEN) Xen stack trace from rsp=ffff8300cfcefe68:
(XEN)    ffff8300cfceff28 ffff8300cfceff28 00000000c0101347 0000000000000019
(XEN)    ffff8300cfcefea8 ffff828c8015a649 ffff8300cecce100 0000000000000019
(XEN)    ffff8300cfcefed8 ffff828c8015a7f4 ffff8300cfceff28 ffff8300cf7a8100
(XEN)    00000000c0101347 0000000000000019 ffff8300cfceff18 ffff828c8015eb46
(XEN)    0000000000000000 ffff8300cecce100 0000000000000000 0000000000000000
(XEN)    0000000000000000 0000000000000000 00007cff303100b7 ffff828c801c56db
(XEN)    0000000000000000 0000000000000000 0000000000000000 0000000000000000
(XEN)    00000000c13a9fac 00000000deadbeef 0000000000000000 0000000000000000
(XEN)    0000000000000000 0000000000000000 0000000000000000 00000000deadbeef
(XEN)    00000000deadbeef 00000000deadbeef 00000000c13a9f80 0000000e00000019
(XEN)    00000000c0101347 0000000000000061 0000000000010a07 00000000c13a9f20
(XEN)    0000000000000069 0000000000000000 0000000000000000 0000000000000000
(XEN)    0000000000000000 0000000000000005 ffff8300cecce100
(XEN) Xen call trace:
(XEN)    [<ffff828c801c7b50>] show_page_walk+0x1f8/0x244
(XEN)    [<ffff828c8015a649>] reserved_bit_page_fault+0x53/0x66
(XEN)    [<ffff828c8015a7f4>] propagate_page_fault+0x198/0x1ad
(XEN)    [<ffff828c8015eb46>] do_page_fault+0x516/0x52c
(XEN)
(XEN) Pagetable walk from ffffa25e9d00f808:
(XEN)  L4[0x144] = 0000000000000000 ffffffffffffffff
(XEN)
(XEN) ****************************************
(XEN) Panic on CPU 5:
(XEN) FATAL PAGE FAULT
(XEN) [error_code=0000]
(XEN) Faulting linear address: ffffa25e9d00f808
(XEN) ****************************************
(XEN)
(XEN) Reboot in five seconds...

-Chris

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel

_______________________________________________
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Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel

Keir Fraser

2009-Jul-17 07:03 UTC

head link

Re: [Xen-devel] d273:v3: reserved bit in page table (ec=0019)

As will reproducibility. This one may need some bisection.

 -- Keir

On 17/07/2009 04:21, "Jiang, Yunhong" <yunhong.jiang@intel.com>
wrote:
> The full log will be helpful.
> 
> --jyh
> 
> -----Original Message-----
> From: xen-devel-bounces@lists.xensource.com
> [mailto:xen-devel-bounces@lists.xensource.com] On Behalf Of Christopher S.
> Aker
> Sent: 2009年7月17日 0:21
> To: xen devel
> Subject: [Xen-devel] d273:v3: reserved bit in page table (ec=0019)
> 
> Xen 3.3-testing @ changeset 18651, 64bit dom0 2.6.18.8 @ changeset 888, PAE
> 
> Files: http://theshore.net/~caker/xen/BUGS/1.22/
> 
> (XEN) d273:v3: reserved bit in page table (ec=0019)
> (XEN) Pagetable walk from 00000000c0101347:
> (XEN)  L4[0x000] = 000000067c36a027 0000000000016495
> (XEN)  L3[0x003] = 000000067c06c027 0000000000016793
> (XEN)  L2[0x000] = 00001f5e9d00f403 ffffffffffffffff
> (XEN) ----[ Xen-3.3.2-rc1  x86_64  debug=y  Not tainted ]----
> (XEN) CPU:    5
> (XEN) RIP:    e008:[<ffff828c801c7b50>] show_page_walk+0x1f8/0x244
> (XEN) RFLAGS: 0000000000010206   CONTEXT: hypervisor
> (XEN) rax: ffff830000000000   rbx: 0000000000000001   rcx: 0000000000003b1d
> (XEN) rdx: 00001f5e9d00f808   rsi: 0000000000000101   rdi: ffff828c80287e70
> (XEN) rbp: ffff8300cfcefe88   rsp: ffff8300cfcefe68   r8:  0000000000000004
> (XEN) r9:  0000000000000000   r10: 00000000ffffffff   r11: 00000000fffffffe
> (XEN) r12: 00000001f5e9d00f   r13: 00000000c0101347   r14: 00000000c0101347
> (XEN) r15: 0000000000000000   cr0: 000000008005003b   cr4: 00000000000026b0
> (XEN) cr3: 00000004ee806000   cr2: ffffa25e9d00f808
> (XEN) ds: 007b   es: 007b   fs: 0000   gs: 0000   ss: 0000   cs: e008
> (XEN) Xen stack trace from rsp=ffff8300cfcefe68:
> (XEN)    ffff8300cfceff28 ffff8300cfceff28 00000000c0101347
0000000000000019
> (XEN)    ffff8300cfcefea8 ffff828c8015a649 ffff8300cecce100
0000000000000019
> (XEN)    ffff8300cfcefed8 ffff828c8015a7f4 ffff8300cfceff28
ffff8300cf7a8100
> (XEN)    00000000c0101347 0000000000000019 ffff8300cfceff18
ffff828c8015eb46
> (XEN)    0000000000000000 ffff8300cecce100 0000000000000000
0000000000000000
> (XEN)    0000000000000000 0000000000000000 00007cff303100b7
ffff828c801c56db
> (XEN)    0000000000000000 0000000000000000 0000000000000000
0000000000000000
> (XEN)    00000000c13a9fac 00000000deadbeef 0000000000000000
0000000000000000
> (XEN)    0000000000000000 0000000000000000 0000000000000000
00000000deadbeef
> (XEN)    00000000deadbeef 00000000deadbeef 00000000c13a9f80
0000000e00000019
> (XEN)    00000000c0101347 0000000000000061 0000000000010a07
00000000c13a9f20
> (XEN)    0000000000000069 0000000000000000 0000000000000000
0000000000000000
> (XEN)    0000000000000000 0000000000000005 ffff8300cecce100
> (XEN) Xen call trace:
> (XEN)    [<ffff828c801c7b50>] show_page_walk+0x1f8/0x244
> (XEN)    [<ffff828c8015a649>] reserved_bit_page_fault+0x53/0x66
> (XEN)    [<ffff828c8015a7f4>] propagate_page_fault+0x198/0x1ad
> (XEN)    [<ffff828c8015eb46>] do_page_fault+0x516/0x52c
> (XEN)
> (XEN) Pagetable walk from ffffa25e9d00f808:
> (XEN)  L4[0x144] = 0000000000000000 ffffffffffffffff
> (XEN)
> (XEN) ****************************************
> (XEN) Panic on CPU 5:
> (XEN) FATAL PAGE FAULT
> (XEN) [error_code=0000]
> (XEN) Faulting linear address: ffffa25e9d00f808
> (XEN) ****************************************
> (XEN)
> (XEN) Reboot in five seconds...
> 
> -Chris
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel


_______________________________________________
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http://lists.xensource.com/xen-devel

Jiang, Yunhong

2009-Jul-17 07:06 UTC

head link

RE: [Xen-devel] d273:v3: reserved bit in page table (ec=0019)

I'm just wondering what's the meaning of "PAE" in this output:
" Xen 3.3-testing @ changeset 18651, 64bit dom0 2.6.18.8 @ changeset 888,
PAE".

--jyh

Keir Fraser wrote:> As will reproducibility. This one may need some bisection.
> 
> -- Keir
> 
> On 17/07/2009 04:21, "Jiang, Yunhong"
<yunhong.jiang@intel.com> wrote:
> 
>> The full log will be helpful.
>> 
>> --jyh
>> 
>> -----Original Message-----
>> From: xen-devel-bounces@lists.xensource.com
>> [mailto:xen-devel-bounces@lists.xensource.com] On Behalf Of
>> Christopher S. Aker Sent: 2009年7月17日 0:21
>> To: xen devel
>> Subject: [Xen-devel] d273:v3: reserved bit in page table (ec=0019)
>> 
>> Xen 3.3-testing @ changeset 18651, 64bit dom0 2.6.18.8 @ changeset
>> 888, PAE 
>> 
>> Files: http://theshore.net/~caker/xen/BUGS/1.22/
>> 
>> (XEN) d273:v3: reserved bit in page table (ec=0019)
>> (XEN) Pagetable walk from 00000000c0101347:
>> (XEN)  L4[0x000] = 000000067c36a027 0000000000016495
>> (XEN)  L3[0x003] = 000000067c06c027 0000000000016793
>> (XEN)  L2[0x000] = 00001f5e9d00f403 ffffffffffffffff
>> (XEN) ----[ Xen-3.3.2-rc1  x86_64  debug=y  Not tainted ]---- (XEN)
>> CPU:    5 (XEN) RIP:    e008:[<ffff828c801c7b50>]
>> show_page_walk+0x1f8/0x244 (XEN) RFLAGS: 0000000000010206   CONTEXT:
>> hypervisor (XEN) rax: ffff830000000000   rbx: 0000000000000001  
>> rcx: 0000000000003b1d (XEN) rdx: 00001f5e9d00f808   rsi:
>> 0000000000000101   rdi: ffff828c80287e70 (XEN) rbp: ffff8300cfcefe88
>> rsp: ffff8300cfcefe68   r8: 0000000000000004 (XEN) r9: 
>> 0000000000000000   r10: 00000000ffffffff   r11: 00000000fffffffe
>> (XEN) r12: 00000001f5e9d00f   r13: 00000000c0101347   r14:
>> 00000000c0101347 (XEN) r15: 0000000000000000   cr0: 000000008005003b
>> cr4: 00000000000026b0 (XEN) cr3: 00000004ee806000   cr2:
>> ffffa25e9d00f808 (XEN) ds: 007b   es: 007b   fs: 0000   gs: 0000  
>> ss: 0000   cs: e008 (XEN) Xen stack trace from rsp=ffff8300cfcefe68:
>> (XEN)    ffff8300cfceff28 ffff8300cfceff28 00000000c0101347
>> 0000000000000019 (XEN)    ffff8300cfcefea8 ffff828c8015a649
>> ffff8300cecce100 0000000000000019 (XEN)    ffff8300cfcefed8
>> ffff828c8015a7f4 ffff8300cfceff28 ffff8300cf7a8100 (XEN)   
>> 00000000c0101347 0000000000000019 ffff8300cfceff18 ffff828c8015eb46
>> (XEN)    0000000000000000 ffff8300cecce100 0000000000000000
>> 0000000000000000 (XEN)    0000000000000000 0000000000000000
>> 00007cff303100b7 ffff828c801c56db (XEN)    0000000000000000
>> 0000000000000000 0000000000000000 0000000000000000 (XEN)   
>> 00000000c13a9fac 00000000deadbeef 0000000000000000 0000000000000000
>> (XEN)    0000000000000000 0000000000000000 0000000000000000
>> 00000000deadbeef (XEN)    00000000deadbeef 00000000deadbeef
>> 00000000c13a9f80 0000000e00000019 (XEN)    00000000c0101347
>> 0000000000000061 0000000000010a07 00000000c13a9f20 (XEN)   
>> 0000000000000069 0000000000000000 0000000000000000 0000000000000000
>> (XEN)    0000000000000000 0000000000000005 ffff8300cecce100 (XEN)
>> Xen call trace: (XEN)    [<ffff828c801c7b50>]
>> show_page_walk+0x1f8/0x244 (XEN)    [<ffff828c8015a649>]
>> reserved_bit_page_fault+0x53/0x66 (XEN)    [<ffff828c8015a7f4>]
>> propagate_page_fault+0x198/0x1ad (XEN)    [<ffff828c8015eb46>]
>> do_page_fault+0x516/0x52c (XEN) (XEN) Pagetable walk from
>> ffffa25e9d00f808: (XEN)  L4[0x144] = 0000000000000000
>> ffffffffffffffff (XEN) (XEN)
>> **************************************** (XEN) Panic on CPU 5: (XEN)
>> FATAL PAGE FAULT (XEN) [error_code=0000] (XEN) Faulting linear
>> address: ffffa25e9d00f808 (XEN)
>> **************************************** (XEN) (XEN) Reboot in five
>> seconds...  
>> 
>> -Chris
>> 
>> _______________________________________________
>> Xen-devel mailing list
>> Xen-devel@lists.xensource.com
>> http://lists.xensource.com/xen-devel_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel

Keir Fraser

2009-Jul-17 07:17 UTC

head link

Re: [Xen-devel] d273:v3: reserved bit in page table (ec=0019)

PAE dom0 on 64b Xen, no doubt. The fact the Xen and dom0 decsriptions run
into each other has confused you.

 -- Keir

On 17/07/2009 08:06, "Jiang, Yunhong" <yunhong.jiang@intel.com>
wrote:
> I''m just wondering what''s the meaning of "PAE"
in this output: " Xen
> 3.3-testing @ changeset 18651, 64bit dom0 2.6.18.8 @ changeset 888,
PAE".
> 
> --jyh
> 
> Keir Fraser wrote:
>> As will reproducibility. This one may need some bisection.
>> 
>> -- Keir
>> 
>> On 17/07/2009 04:21, "Jiang, Yunhong"
<yunhong.jiang@intel.com> wrote:
>> 
>>> The full log will be helpful.
>>> 
>>> --jyh
>>> 
>>> -----Original Message-----
>>> From: xen-devel-bounces@lists.xensource.com
>>> [mailto:xen-devel-bounces@lists.xensource.com] On Behalf Of
>>> Christopher S. Aker Sent: 2009年7月17日 0:21
>>> To: xen devel
>>> Subject: [Xen-devel] d273:v3: reserved bit in page table (ec=0019)
>>> 
>>> Xen 3.3-testing @ changeset 18651, 64bit dom0 2.6.18.8 @ changeset
>>> 888, PAE 
>>> 
>>> Files: http://theshore.net/~caker/xen/BUGS/1.22/
>>> 
>>> (XEN) d273:v3: reserved bit in page table (ec=0019)
>>> (XEN) Pagetable walk from 00000000c0101347:
>>> (XEN)  L4[0x000] = 000000067c36a027 0000000000016495
>>> (XEN)  L3[0x003] = 000000067c06c027 0000000000016793
>>> (XEN)  L2[0x000] = 00001f5e9d00f403 ffffffffffffffff
>>> (XEN) ----[ Xen-3.3.2-rc1  x86_64  debug=y  Not tainted ]---- (XEN)
>>> CPU:    5 (XEN) RIP:    e008:[<ffff828c801c7b50>]
>>> show_page_walk+0x1f8/0x244 (XEN) RFLAGS: 0000000000010206  
CONTEXT:
>>> hypervisor (XEN) rax: ffff830000000000   rbx: 0000000000000001
>>> rcx: 0000000000003b1d (XEN) rdx: 00001f5e9d00f808   rsi:
>>> 0000000000000101   rdi: ffff828c80287e70 (XEN) rbp:
ffff8300cfcefe88
>>> rsp: ffff8300cfcefe68   r8: 0000000000000004 (XEN) r9:
>>> 0000000000000000   r10: 00000000ffffffff   r11: 00000000fffffffe
>>> (XEN) r12: 00000001f5e9d00f   r13: 00000000c0101347   r14:
>>> 00000000c0101347 (XEN) r15: 0000000000000000   cr0:
000000008005003b
>>> cr4: 00000000000026b0 (XEN) cr3: 00000004ee806000   cr2:
>>> ffffa25e9d00f808 (XEN) ds: 007b   es: 007b   fs: 0000   gs: 0000
>>> ss: 0000   cs: e008 (XEN) Xen stack trace from
rsp=ffff8300cfcefe68:
>>> (XEN)    ffff8300cfceff28 ffff8300cfceff28 00000000c0101347
>>> 0000000000000019 (XEN)    ffff8300cfcefea8 ffff828c8015a649
>>> ffff8300cecce100 0000000000000019 (XEN)    ffff8300cfcefed8
>>> ffff828c8015a7f4 ffff8300cfceff28 ffff8300cf7a8100 (XEN)
>>> 00000000c0101347 0000000000000019 ffff8300cfceff18 ffff828c8015eb46
>>> (XEN)    0000000000000000 ffff8300cecce100 0000000000000000
>>> 0000000000000000 (XEN)    0000000000000000 0000000000000000
>>> 00007cff303100b7 ffff828c801c56db (XEN)    0000000000000000
>>> 0000000000000000 0000000000000000 0000000000000000 (XEN)
>>> 00000000c13a9fac 00000000deadbeef 0000000000000000 0000000000000000
>>> (XEN)    0000000000000000 0000000000000000 0000000000000000
>>> 00000000deadbeef (XEN)    00000000deadbeef 00000000deadbeef
>>> 00000000c13a9f80 0000000e00000019 (XEN)    00000000c0101347
>>> 0000000000000061 0000000000010a07 00000000c13a9f20 (XEN)
>>> 0000000000000069 0000000000000000 0000000000000000 0000000000000000
>>> (XEN)    0000000000000000 0000000000000005 ffff8300cecce100 (XEN)
>>> Xen call trace: (XEN)    [<ffff828c801c7b50>]
>>> show_page_walk+0x1f8/0x244 (XEN)    [<ffff828c8015a649>]
>>> reserved_bit_page_fault+0x53/0x66 (XEN)   
[<ffff828c8015a7f4>]
>>> propagate_page_fault+0x198/0x1ad (XEN)   
[<ffff828c8015eb46>]
>>> do_page_fault+0x516/0x52c (XEN) (XEN) Pagetable walk from
>>> ffffa25e9d00f808: (XEN)  L4[0x144] = 0000000000000000
>>> ffffffffffffffff (XEN) (XEN)
>>> **************************************** (XEN) Panic on CPU 5:
(XEN)
>>> FATAL PAGE FAULT (XEN) [error_code=0000] (XEN) Faulting linear
>>> address: ffffa25e9d00f808 (XEN)
>>> **************************************** (XEN) (XEN) Reboot in five
>>> seconds...  
>>> 
>>> -Chris
>>> 
>>> _______________________________________________
>>> Xen-devel mailing list
>>> Xen-devel@lists.xensource.com
>>> http://lists.xensource.com/xen-devel


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http://lists.xensource.com/xen-devel

Jiang, Yunhong

2009-Jul-17 07:37 UTC

head link

RE: [Xen-devel] d273:v3: reserved bit in page table (ec=0019)

Aha, yes, thanks for clarification :-)

--jyh

Keir Fraser wrote:> PAE dom0 on 64b Xen, no doubt. The fact the Xen and dom0
> decsriptions run
> into each other has confused you.
> 
> -- Keir
> 
> On 17/07/2009 08:06, "Jiang, Yunhong"
<yunhong.jiang@intel.com> wrote:
> 
>> I'm just wondering what's the meaning of "PAE" in
this output: " Xen
>> 3.3-testing @ changeset 18651, 64bit dom0 2.6.18.8 @ changeset 888,
>> PAE". 
>> 
>> --jyh
>> 
>> Keir Fraser wrote:
>>> As will reproducibility. This one may need some bisection.
>>> 
>>> -- Keir
>>> 
>>> On 17/07/2009 04:21, "Jiang, Yunhong"
> <yunhong.jiang@intel.com> wrote:
>>> 
>>>> The full log will be helpful.
>>>> 
>>>> --jyh
>>>> 
>>>> -----Original Message-----
>>>> From: xen-devel-bounces@lists.xensource.com
>>>> [mailto:xen-devel-bounces@lists.xensource.com] On Behalf Of
>>>> Christopher S. Aker Sent: 2009年7月17日 0:21
>>>> To: xen devel
>>>> Subject: [Xen-devel] d273:v3: reserved bit in page table
(ec=0019)
>>>> 
>>>> Xen 3.3-testing @ changeset 18651, 64bit dom0 2.6.18.8 @
changeset
>>>> 888, PAE 
>>>> 
>>>> Files: http://theshore.net/~caker/xen/BUGS/1.22/
>>>> 
>>>> (XEN) d273:v3: reserved bit in page table (ec=0019)
>>>> (XEN) Pagetable walk from 00000000c0101347:
>>>> (XEN)  L4[0x000] = 000000067c36a027 0000000000016495
>>>> (XEN)  L3[0x003] = 000000067c06c027 0000000000016793
>>>> (XEN)  L2[0x000] = 00001f5e9d00f403 ffffffffffffffff
>>>> (XEN) ----[ Xen-3.3.2-rc1  x86_64  debug=y  Not tainted ]----
(XEN)
>>>> CPU:    5 (XEN) RIP:    e008:[<ffff828c801c7b50>]
>>>> show_page_walk+0x1f8/0x244 (XEN) RFLAGS: 0000000000010206
CONTEXT:
>>>> hypervisor (XEN) rax: ffff830000000000   rbx: 0000000000000001
>>>> rcx: 0000000000003b1d (XEN) rdx: 00001f5e9d00f808   rsi:
>>>> 0000000000000101   rdi: ffff828c80287e70 (XEN) rbp:
>>>> ffff8300cfcefe88 rsp: ffff8300cfcefe68   r8: 0000000000000004
>>>> (XEN) r9: 0000000000000000   r10: 00000000ffffffff   r11:
>>>> 00000000fffffffe (XEN) r12: 00000001f5e9d00f   r13:
>>>> 00000000c0101347   r14: 00000000c0101347 (XEN) r15:
>>>> 0000000000000000   cr0: 000000008005003b cr4: 00000000000026b0
>>>> (XEN) cr3: 00000004ee806000   cr2: ffffa25e9d00f808 (XEN) ds:
007b
>>>> es: 007b   fs: 0000   gs: 0000 ss: 0000   cs: e008 (XEN) Xen
stack
>>>> trace from rsp=ffff8300cfcefe68: (XEN)    ffff8300cfceff28
>>>> ffff8300cfceff28 00000000c0101347 0000000000000019 (XEN)   
>>>> ffff8300cfcefea8 ffff828c8015a649 ffff8300cecce100
>>>> 0000000000000019 (XEN)    ffff8300cfcefed8 ffff828c8015a7f4
>>>> ffff8300cfceff28 ffff8300cf7a8100 (XEN) 00000000c0101347
>>>> 0000000000000019 ffff8300cfceff18 ffff828c8015eb46 (XEN)   
>>>> 0000000000000000 ffff8300cecce100 0000000000000000
>>>> 0000000000000000 (XEN)    0000000000000000 0000000000000000
>>>> 00007cff303100b7 ffff828c801c56db (XEN)    0000000000000000
>>>> 0000000000000000 0000000000000000 0000000000000000 (XEN)
>>>> 00000000c13a9fac 00000000deadbeef 0000000000000000
>>>> 0000000000000000 (XEN)    0000000000000000 0000000000000000
>>>> 0000000000000000 00000000deadbeef (XEN)    00000000deadbeef
>>>> 00000000deadbeef 00000000c13a9f80 0000000e00000019 (XEN)   
>>>> 00000000c0101347 0000000000000061 0000000000010a07
>>>> 00000000c13a9f20 (XEN) 0000000000000069 0000000000000000
>>>> 0000000000000000 0000000000000000 (XEN)    0000000000000000
>>>> 0000000000000005 ffff8300cecce100 (XEN) Xen call trace: (XEN)
>>>> [<ffff828c801c7b50>] show_page_walk+0x1f8/0x244 (XEN)   
>>>> [<ffff828c8015a649>] reserved_bit_page_fault+0x53/0x66
(XEN)
>>>> [<ffff828c8015a7f4>] propagate_page_fault+0x198/0x1ad
(XEN)
>>>> [<ffff828c8015eb46>] do_page_fault+0x516/0x52c (XEN)
(XEN)
>>>> Pagetable walk from ffffa25e9d00f808: (XEN)  L4[0x144]
>>>> 0000000000000000 ffffffffffffffff (XEN) (XEN)
>>>> **************************************** (XEN) Panic on CPU 5:
>>>> (XEN) FATAL PAGE FAULT (XEN) [error_code=0000] (XEN) Faulting
>>>> linear address: ffffa25e9d00f808 (XEN)
>>>> **************************************** (XEN) (XEN) Reboot in
>>>> five seconds...   
>>>> 
>>>> -Chris
>>>> 
>>>> _______________________________________________
>>>> Xen-devel mailing list
>>>> Xen-devel@lists.xensource.com
>>>> http://lists.xensource.com/xen-devel_______________________________________________
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Jan Beulich

2009-Jul-17 09:30 UTC

head link

Re: [Xen-devel] d273:v3: reserved bit in page table (ec=0019)

>>> Keir Fraser <keir.fraser@eu.citrix.com> 16.07.09 19:05
>>>
>On 16/07/2009 17:21, "Christopher S. Aker"
<caker@theshore.net> wrote:
>> (XEN) Pagetable walk from 00000000c0101347:
>> (XEN)  L4[0x000] = 000000067c36a027 0000000000016495
>> (XEN)  L3[0x003] = 000000067c06c027 0000000000016793
>> (XEN)  L2[0x000] = 00001f5e9d00f403 ffffffffffffffff
>                     ^^^^^^^^^^^^^^^^
>Bogus PDE -- the bottom 12 bits are potentially okay (although I
don''t think
>Linux uses the _PAGE_AVAIL bits) but the physical address is definitely
>bogus. Begs the question where the bogus PDE came from of course, since that
>would be the actual bug. The crash report here is the symptom when the PDE
>actually next gets used.
The low bits are definitely garbage too (unless there''s a kernel
component
in use that''s not part of the normal 2.6.18-based kernel): L2 entries
are
only ever written with _PAGE_TABLE attributes, i.e. 0x067.

It might be worth dumping out the whole L2 page, though since it''s the
first entry it would also seem possible that some physical memory access
overran a page boundary. Was there any device pass-through active?

Jan


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Xen devel - Jul 2009 - d273:v3: reserved bit in page table (ec=0019)

[Xen-devel] d273:v3: reserved bit in page table (ec=0019)

Re: [Xen-devel] d273:v3: reserved bit in page table (ec=0019)

RE: [Xen-devel] d273:v3: reserved bit in page table (ec=0019)

Re: [Xen-devel] d273:v3: reserved bit in page table (ec=0019)

RE: [Xen-devel] d273:v3: reserved bit in page table (ec=0019)

Re: [Xen-devel] d273:v3: reserved bit in page table (ec=0019)

RE: [Xen-devel] d273:v3: reserved bit in page table (ec=0019)

Re: [Xen-devel] d273:v3: reserved bit in page table (ec=0019)