Re: Any idea why !devnode fails?

WINDBG
1

> Hi,

kd> !devnode 0 1
Error retrieving address of IopRootDeviceNode

!devnode doesn’t fail when I attach the debugger to
another identical target in which ntoskrnl.exe
symbols
were resolved correctly.

I do not know why the same symbols are not resolved
below. Pl. lemme know if you have any ideas. Hope
the following information would be sufficient.

*******************************************************

Microsoft (R) Windows Debugger Version 6.1.0017.2
Copyright (c) Microsoft Corporation. All rights
reserved.

Opened \.\com2
Waiting to reconnect…
Connected to Windows Server 2003 3790 x86 compatible
target, ptr64 FALSE
Kernel Debugger connection established.
Symbol search path is:
srv*c:\mycache*\winvm-svr\windows-symsrv
Executable search path is:
*** ERROR: Symbol file could not be found.
Defaulted
to export symbols for ntoskrnl.exe -
Windows Server 2003 Kernel Version 3790 UP Free x86
compatible
Product: Server, suite: Enterprise TerminalServer
SingleUserTS
Built by: 3790.srv03_rtm.030324-2048
Kernel base = 0x804de000 PsLoadedModuleList =
0x80568c08

…

kd> !devnode 0 1
Error retrieving address of IopRootDeviceNode

*******************************************************

Thanks in advance for your help,

  • Venkatesh.

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2

Perhaps the failing machine has a hotfix installed that replaces
ntoskrnl.exe - use “lm v mnt” to show the info on nt version (or go look at
the files on the targets and compare dates/version)

/simgr

-----Original Message-----
From: Mohan Venkat [mailto:xxxxx@yahoo.com]
Sent: Wednesday, July 16, 2003 4:24 PM
To: Kernel Debugging Interest List

Hi,

kd> !devnode 0 1
Error retrieving address of IopRootDeviceNode

!devnode doesn’t fail when I attach the debugger to
another identical target in which ntoskrnl.exe
symbols
were resolved correctly.

I do not know why the same symbols are not resolved
below. Pl. lemme know if you have any ideas. Hope
the following information would be sufficient.

*******************************************************

Microsoft (R) Windows Debugger Version 6.1.0017.2
Copyright (c) Microsoft Corporation. All rights
reserved.

Opened \.\com2
Waiting to reconnect…
Connected to Windows Server 2003 3790 x86 compatible
target, ptr64 FALSE
Kernel Debugger connection established.
Symbol search path is:
srv*c:\mycache*\winvm-svr\windows-symsrv
Executable search path is:
*** ERROR: Symbol file could not be found.
Defaulted
to export symbols for ntoskrnl.exe -
Windows Server 2003 Kernel Version 3790 UP Free x86
compatible
Product: Server, suite: Enterprise TerminalServer
SingleUserTS
Built by: 3790.srv03_rtm.030324-2048
Kernel base = 0x804de000 PsLoadedModuleList =
0x80568c08

…

kd> !devnode 0 1
Error retrieving address of IopRootDeviceNode

*******************************************************

Thanks in advance for your help,

  • Venkatesh.

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3

What does .sympath show on each machine? When I get this type of
problem, I make sure to do a .reload. Check the debugger command line
help documentation for available commands to list modules and associated
symbols. I’m thinking of the lm command, not sure if this is a !lm or
.lm. Sorry, cannot get the debugger help file up to see which one and
machine is rebooting. Oh well.
Barb

-----Original Message-----
From: Mohan Venkat [mailto:xxxxx@yahoo.com]
Sent: Wednesday, July 16, 2003 1:24 PM
To: Kernel Debugging Interest List
Subject: [windbg] Re: Any idea why !devnode fails?

Hi,

kd> !devnode 0 1
Error retrieving address of IopRootDeviceNode

!devnode doesn’t fail when I attach the debugger to
another identical target in which ntoskrnl.exe
symbols
were resolved correctly.

I do not know why the same symbols are not resolved
below. Pl. lemme know if you have any ideas. Hope
the following information would be sufficient.

*******************************************************

Microsoft (R) Windows Debugger Version 6.1.0017.2
Copyright (c) Microsoft Corporation. All rights
reserved.

Opened \.\com2
Waiting to reconnect…
Connected to Windows Server 2003 3790 x86 compatible
target, ptr64 FALSE
Kernel Debugger connection established.
Symbol search path is:
srv*c:\mycache*\winvm-svr\windows-symsrv
Executable search path is:
*** ERROR: Symbol file could not be found.
Defaulted
to export symbols for ntoskrnl.exe -
Windows Server 2003 Kernel Version 3790 UP Free x86
compatible
Product: Server, suite: Enterprise TerminalServer
SingleUserTS
Built by: 3790.srv03_rtm.030324-2048
Kernel base = 0x804de000 PsLoadedModuleList =
0x80568c08

…

kd> !devnode 0 1
Error retrieving address of IopRootDeviceNode

*******************************************************

Thanks in advance for your help,

  • Venkatesh.

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4

Binary versions on two machines were same. I
double-checked that prior to sending my earlier
message.

But I failed to compare the sympath in the work-spaces
that I used.

After fixing the sympath in the failing machine to
srv*c:\websymbols*http://msdl.microsoft.com/download/symbols,
!devnode works fine.

Thanks for the quick response,

  • Venkatesh.

-----Original Message-----
From: Graham, Simon
[mailto:xxxxx@stratus.com]
Sent: Wednesday, July 16, 2003 1:32 PM
To: Kernel Debugging Interest List
Subject: [windbg] Re: Any idea why !devnode fails?

Perhaps the failing machine has a hotfix installed
that replaces
ntoskrnl.exe - use “lm v mnt” to show the info on nt
version (or go look at
the files on the targets and compare dates/version)

/simgr

-----Original Message-----
From: Mohan Venkat
[mailto:xxxxx@yahoo.com]
Sent: Wednesday, July 16, 2003 4:24 PM
To: Kernel Debugging Interest List

> Hi,
>
> kd> !devnode 0 1
> Error retrieving address of IopRootDeviceNode
>
> !devnode doesn’t fail when I attach the debugger
to
> another identical target in which ntoskrnl.exe
> symbols
> were resolved correctly.
>
> I do not know why the same symbols are not
resolved
> below. Pl. lemme know if you have any ideas.
Hope
> the following information would be sufficient.
>
>

*******************************************************

> Microsoft (R) Windows Debugger Version 6.1.0017.2
> Copyright (c) Microsoft Corporation. All rights
> reserved.
>
> Opened \.\com2
> Waiting to reconnect…
> Connected to Windows Server 2003 3790 x86
compatible
> target, ptr64 FALSE
> Kernel Debugger connection established.
> Symbol search path is:
> srv*c:\mycache*\winvm-svr\windows-symsrv
> Executable search path is:
> *** ERROR: Symbol file could not be found.
> Defaulted
> to export symbols for ntoskrnl.exe -
> Windows Server 2003 Kernel Version 3790 UP Free
x86
> compatible
> Product: Server, suite: Enterprise TerminalServer
> SingleUserTS
> Built by: 3790.srv03_rtm.030324-2048
> Kernel base = 0x804de000 PsLoadedModuleList =
> 0x80568c08
>
> …
>
> kd> !devnode 0 1
> Error retrieving address of IopRootDeviceNode
>

*******************************************************

>
> Thanks in advance for your help,
>
> - Venkatesh.

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SBC Yahoo! DSL - Now only $29.95 per month!
http://sbc.yahoo.com

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xxxxx@stratus.com
To unsubscribe send a blank email to
xxxxx@lists.osr.com

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5

I failed to compare the sympath in the work-spaces
that I used.

After fixing the sympath in the failing machine to
srv*c:\websymbols*http://msdl.microsoft.com/download/symbols,
!devnode works fine.

Thanks you very much,

  • Venkatesh.

-----Original Message-----
From: Leahy, Barbara C [mailto:barbara.leahy@hp.com]
Sent: Wednesday, July 16, 2003 1:34 PM
To: Kernel Debugging Interest List
Subject: [windbg] Re: Any idea why !devnode fails?

What does .sympath show on each machine? When I get
this type of
problem, I make sure to do a .reload. Check the
debugger command line
help documentation for available commands to list
modules and associated
symbols. I’m thinking of the lm command, not sure
if this is a !lm or
.lm. Sorry, cannot get the debugger help file up to
see which one and
machine is rebooting. Oh well.
Barb

-----Original Message-----
From: Mohan Venkat
[mailto:xxxxx@yahoo.com]
Sent: Wednesday, July 16, 2003 1:24 PM
To: Kernel Debugging Interest List
Subject: [windbg] Re: Any idea why !devnode fails?

> Hi,
>
> kd> !devnode 0 1
> Error retrieving address of IopRootDeviceNode
>
> !devnode doesn’t fail when I attach the debugger
to
> another identical target in which ntoskrnl.exe
> symbols
> were resolved correctly.
>
> I do not know why the same symbols are not
resolved
> below. Pl. lemme know if you have any ideas.
Hope
> the following information would be sufficient.
>
>

*******************************************************

> Microsoft (R) Windows Debugger Version 6.1.0017.2
> Copyright (c) Microsoft Corporation. All rights
> reserved.
>
> Opened \.\com2
> Waiting to reconnect…
> Connected to Windows Server 2003 3790 x86
compatible
> target, ptr64 FALSE
> Kernel Debugger connection established.
> Symbol search path is:
> srv*c:\mycache*\winvm-svr\windows-symsrv
> Executable search path is:
> *** ERROR: Symbol file could not be found.
> Defaulted
> to export symbols for ntoskrnl.exe -
> Windows Server 2003 Kernel Version 3790 UP Free
x86
> compatible
> Product: Server, suite: Enterprise TerminalServer
> SingleUserTS
> Built by: 3790.srv03_rtm.030324-2048
> Kernel base = 0x804de000 PsLoadedModuleList =
> 0x80568c08
>
> …
>
> kd> !devnode 0 1
> Error retrieving address of IopRootDeviceNode
>

*******************************************************

>
> Thanks in advance for your help,
>
> - Venkatesh.

Do you Yahoo!?
SBC Yahoo! DSL - Now only $29.95 per month!
http://sbc.yahoo.com

You are currently subscribed to windbg as:
barbara.leahy@hp.com
To unsubscribe send a blank email to
xxxxx@lists.osr.com

Do you Yahoo!?
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