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w3wp randomly crashes when redirector is used

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w3wp randomly crashes when redirector is used

Steve Ryan-3
Hello

 

I really hope someone can help me with this. I have been trying to figure it
out for days and I am beginning to go mad!

 

The issue I am having appears to be very similar to
https://issues.apache.org/bugzilla/show_bug.cgi?id=45063. It might even be
the same issue.

 

Note I can recreate the problem on various flavours of Windows, and in IIS 6
& IIS 7.

 

Details of the issue:

 

I have a web application which lives under the "Default Web Site" in IIS 6,
and which has its own app pool. The redirector (isapi_redirect.dll 1.2.28)
lives under the DefaultAppPool.

 

The user would log into our web application (which uses our app pool) and
everything works as expected. If he then uses functionality which uses the
redirector (and the DefaultAppPool), w3wp.exe will probably crash. (I say
"probably" because sometimes it works without error).

 

Note everything works fine (i.e. there is no crash) if I run the
DefaultAppPool as "Local System"; the problem only seems to exist if I run
the DefaultAppPool as "Local Service" or "Network Service".

 

Details of the crash:

 

In the Event Viewer I can see the following -

 

Faulting application w3wp.exe, version 6.0.3790.3959, faulting module
ntdll.dll, version 5.2.3790.4455, fault address 0x0004f053.

 

And if I catch the crash using Debug Diagnostic Tool -

 

Thread 5 - System ID 6140

Entry point   w3tp!THREAD_MANAGER::ThreadManagerThread

Create time   01/02/2010 13:13:26

Time spent in user mode   0 Days 0:0:0.0

Time spent in kernel mode   0 Days 0:0:0.15

 

Function     Arg 1     Arg 2     Arg 3   Source

ntdll!RtlpWaitOnCriticalSection+c5     00000000     00000000     4b66d376


ntdll!RtlEnterCriticalSection+152     6a6ee4e8     6a6b9ae6     00000000    

isapi_redirect!TerminateFilter+c24b     00000000     00000000     76bbcc54


isapi_redirect+9ae6     01459180     4b66d376     00000000    

isapi_redirect!TerminateFilter+21435     00000000     10000000     01b6dd18


isapi_redirect!HttpExtensionProc+29c     00000000     732448ee     73243b7a


iisutil!STRU::STRU+c     73243b7a     0157e69c     7327a93f    

nativerd!CONFIG_ELEMENT::ReferenceConfigElement+f     000cf7f0     00000000
7327a970    

nativerd!CONFIG_ELEMENT_LIST::GetMergedElement+483     73243e08     0157eaa8
00000000    

0x0157e68c     00000000     00000000     00000000    

 

 

NTDLL!RTLPWAITONCRITICALSECTION+C5In
w3wp__PID__5276__Date__02_01_2010__Time_01_13_27PM__226__Second_Chance_Excep
tion_C0000005.dmp the assembly instruction at
ntdll!RtlpWaitOnCriticalSection+c5 in C:\Windows\System32\ntdll.dll from
Microsoft Corporation has caused an access violation exception (0xC0000005)
when trying to write to memory location 0x00000014 on thread 5

 

Module Information

Image Name: C:\Windows\System32\ntdll.dll  

Base address: 0x76fc0000  

Checksum: 0x00135d86  

COM DLL: False  

ISAPIExtension: False  

ISAPIFilter: False  

Managed DLL: False  

VB DLL: False  

Loaded Image Name:  ntdll.dll  

Mapped Image Name:    

Module name:  ntdll  

Single Threaded:  False  

Module Size:  1.15 MBytes  

Symbol File Name:
c:\symcache\ntdll.pdb\B958B2F91A5A46B889DAFAB4D140CF252\ntdll.pdb  

Symbol Type:  PDB

Time Stamp:  Sat Jan 19 07:32:54 2008  

Comments:  

Company Name:  Microsoft Corporation

File Description:  NT Layer DLL

File Version:  6.0.6001.18000 (longhorn_rtm.080118-1840)

Internal Name:  ntdll.dll

Legal Copyright:  C Microsoft Corporation. All rights reserved.

Legal Trademarks:  

Original filename:  ntdll.dll

Private Build:  

Product Name:  MicrosoftR WindowsR Operating System

Product Version:  6.0.6001.18000

Special Build:  &

 

There is nothing obvious in Process Monitor which explains what is causing
the error.

 

Do any of you have any ideas what could be causing this? Any advice would be
greatly appreciated.

 

Cheers

 

Steve

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Re: w3wp randomly crashes when redirector is used

André Warnier
Hmmm. Are you sure that you are posting to the right list here ?

Steve Ryan wrote:

> Hello
>
>  
>
> I really hope someone can help me with this. I have been trying to figure it
> out for days and I am beginning to go mad!
>
>  
>
> The issue I am having appears to be very similar to
> https://issues.apache.org/bugzilla/show_bug.cgi?id=45063. It might even be
> the same issue.
>
>  
>
> Note I can recreate the problem on various flavours of Windows, and in IIS 6
> & IIS 7.
>
>  
>
> Details of the issue:
>
>  
>
> I have a web application which lives under the "Default Web Site" in IIS 6,
> and which has its own app pool. The redirector (isapi_redirect.dll 1.2.28)
> lives under the DefaultAppPool.
>
>  
>
> The user would log into our web application (which uses our app pool) and
> everything works as expected. If he then uses functionality which uses the
> redirector (and the DefaultAppPool), w3wp.exe will probably crash. (I say
> "probably" because sometimes it works without error).
>
>  
>
> Note everything works fine (i.e. there is no crash) if I run the
> DefaultAppPool as "Local System"; the problem only seems to exist if I run
> the DefaultAppPool as "Local Service" or "Network Service".
>
>  
>
> Details of the crash:
>
>  
>
> In the Event Viewer I can see the following -
>
>  
>
> Faulting application w3wp.exe, version 6.0.3790.3959, faulting module
> ntdll.dll, version 5.2.3790.4455, fault address 0x0004f053.
>
>  
>
> And if I catch the crash using Debug Diagnostic Tool -
>
>  
>
> Thread 5 - System ID 6140
>
> Entry point   w3tp!THREAD_MANAGER::ThreadManagerThread
>
> Create time   01/02/2010 13:13:26
>
> Time spent in user mode   0 Days 0:0:0.0
>
> Time spent in kernel mode   0 Days 0:0:0.15
>
>  
>
> Function     Arg 1     Arg 2     Arg 3   Source
>
> ntdll!RtlpWaitOnCriticalSection+c5     00000000     00000000     4b66d376
>
>
> ntdll!RtlEnterCriticalSection+152     6a6ee4e8     6a6b9ae6     00000000    
>
> isapi_redirect!TerminateFilter+c24b     00000000     00000000     76bbcc54
>
>
> isapi_redirect+9ae6     01459180     4b66d376     00000000    
>
> isapi_redirect!TerminateFilter+21435     00000000     10000000     01b6dd18
>
>
> isapi_redirect!HttpExtensionProc+29c     00000000     732448ee     73243b7a
>
>
> iisutil!STRU::STRU+c     73243b7a     0157e69c     7327a93f    
>
> nativerd!CONFIG_ELEMENT::ReferenceConfigElement+f     000cf7f0     00000000
> 7327a970    
>
> nativerd!CONFIG_ELEMENT_LIST::GetMergedElement+483     73243e08     0157eaa8
> 00000000    
>
> 0x0157e68c     00000000     00000000     00000000    
>
>  
>
>  
>
> NTDLL!RTLPWAITONCRITICALSECTION+C5In
> w3wp__PID__5276__Date__02_01_2010__Time_01_13_27PM__226__Second_Chance_Excep
> tion_C0000005.dmp the assembly instruction at
> ntdll!RtlpWaitOnCriticalSection+c5 in C:\Windows\System32\ntdll.dll from
> Microsoft Corporation has caused an access violation exception (0xC0000005)
> when trying to write to memory location 0x00000014 on thread 5
>
>  
>
> Module Information
>
> Image Name: C:\Windows\System32\ntdll.dll  
>
> Base address: 0x76fc0000  
>
> Checksum: 0x00135d86  
>
> COM DLL: False  
>
> ISAPIExtension: False  
>
> ISAPIFilter: False  
>
> Managed DLL: False  
>
> VB DLL: False  
>
> Loaded Image Name:  ntdll.dll  
>
> Mapped Image Name:    
>
> Module name:  ntdll  
>
> Single Threaded:  False  
>
> Module Size:  1.15 MBytes  
>
> Symbol File Name:
> c:\symcache\ntdll.pdb\B958B2F91A5A46B889DAFAB4D140CF252\ntdll.pdb  
>
> Symbol Type:  PDB
>
> Time Stamp:  Sat Jan 19 07:32:54 2008  
>
> Comments:  
>
> Company Name:  Microsoft Corporation
>
> File Description:  NT Layer DLL
>
> File Version:  6.0.6001.18000 (longhorn_rtm.080118-1840)
>
> Internal Name:  ntdll.dll
>
> Legal Copyright:  C Microsoft Corporation. All rights reserved.
>
> Legal Trademarks:  
>
> Original filename:  ntdll.dll
>
> Private Build:  
>
> Product Name:  MicrosoftR WindowsR Operating System
>
> Product Version:  6.0.6001.18000
>
> Special Build:  &
>
>  
>
> There is nothing obvious in Process Monitor which explains what is causing
> the error.
>
>  
>
> Do any of you have any ideas what could be causing this? Any advice would be
> greatly appreciated.
>
>  
>
> Cheers
>
>  
>
> Steve
>
>


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RE: w3wp randomly crashes when redirector is used

Steve Ryan-3
Thanks for the reply.

My issue is due to Tomcat Connectors 1.2.28.

Is there a more specific mailing list for such issues? The Tomcat Connectors
website shows [hidden email] as the mailing list.

Cheers

Steve

-----Original Message-----
From: André Warnier [mailto:[hidden email]]
Sent: 03 February 2010 20:44
To: Tomcat Users List
Subject: Re: w3wp randomly crashes when redirector is used

Hmmm. Are you sure that you are posting to the right list here ?

Steve Ryan wrote:
> Hello
>
>  
>
> I really hope someone can help me with this. I have been trying to figure
it

> out for days and I am beginning to go mad!
>
>  
>
> The issue I am having appears to be very similar to
> https://issues.apache.org/bugzilla/show_bug.cgi?id=45063. It might even be
> the same issue.
>
>  
>
> Note I can recreate the problem on various flavours of Windows, and in IIS
6
> & IIS 7.
>
>  
>
> Details of the issue:
>
>  
>
> I have a web application which lives under the "Default Web Site" in IIS
6,

> and which has its own app pool. The redirector (isapi_redirect.dll 1.2.28)
> lives under the DefaultAppPool.
>
>  
>
> The user would log into our web application (which uses our app pool) and
> everything works as expected. If he then uses functionality which uses the
> redirector (and the DefaultAppPool), w3wp.exe will probably crash. (I say
> "probably" because sometimes it works without error).
>
>  
>
> Note everything works fine (i.e. there is no crash) if I run the
> DefaultAppPool as "Local System"; the problem only seems to exist if I run
> the DefaultAppPool as "Local Service" or "Network Service".
>
>  
>
> Details of the crash:
>
>  
>
> In the Event Viewer I can see the following -
>
>  
>
> Faulting application w3wp.exe, version 6.0.3790.3959, faulting module
> ntdll.dll, version 5.2.3790.4455, fault address 0x0004f053.
>
>  
>
> And if I catch the crash using Debug Diagnostic Tool -
>
>  
>
> Thread 5 - System ID 6140
>
> Entry point   w3tp!THREAD_MANAGER::ThreadManagerThread
>
> Create time   01/02/2010 13:13:26
>
> Time spent in user mode   0 Days 0:0:0.0
>
> Time spent in kernel mode   0 Days 0:0:0.15
>
>  
>
> Function     Arg 1     Arg 2     Arg 3   Source
>
> ntdll!RtlpWaitOnCriticalSection+c5     00000000     00000000     4b66d376
>
>
> ntdll!RtlEnterCriticalSection+152     6a6ee4e8     6a6b9ae6     00000000

>
> isapi_redirect!TerminateFilter+c24b     00000000     00000000     76bbcc54
>
>
> isapi_redirect+9ae6     01459180     4b66d376     00000000    
>
> isapi_redirect!TerminateFilter+21435     00000000     10000000
01b6dd18
>
>
> isapi_redirect!HttpExtensionProc+29c     00000000     732448ee
73243b7a
>
>
> iisutil!STRU::STRU+c     73243b7a     0157e69c     7327a93f    
>
> nativerd!CONFIG_ELEMENT::ReferenceConfigElement+f     000cf7f0
00000000
> 7327a970    
>
> nativerd!CONFIG_ELEMENT_LIST::GetMergedElement+483     73243e08
0157eaa8

> 00000000    
>
> 0x0157e68c     00000000     00000000     00000000    
>
>  
>
>  
>
> NTDLL!RTLPWAITONCRITICALSECTION+C5In
>
w3wp__PID__5276__Date__02_01_2010__Time_01_13_27PM__226__Second_Chance_Excep
> tion_C0000005.dmp the assembly instruction at
> ntdll!RtlpWaitOnCriticalSection+c5 in C:\Windows\System32\ntdll.dll from
> Microsoft Corporation has caused an access violation exception
(0xC0000005)

> when trying to write to memory location 0x00000014 on thread 5
>
>  
>
> Module Information
>
> Image Name: C:\Windows\System32\ntdll.dll  
>
> Base address: 0x76fc0000  
>
> Checksum: 0x00135d86  
>
> COM DLL: False  
>
> ISAPIExtension: False  
>
> ISAPIFilter: False  
>
> Managed DLL: False  
>
> VB DLL: False  
>
> Loaded Image Name:  ntdll.dll  
>
> Mapped Image Name:    
>
> Module name:  ntdll  
>
> Single Threaded:  False  
>
> Module Size:  1.15 MBytes  
>
> Symbol File Name:
> c:\symcache\ntdll.pdb\B958B2F91A5A46B889DAFAB4D140CF252\ntdll.pdb  
>
> Symbol Type:  PDB
>
> Time Stamp:  Sat Jan 19 07:32:54 2008  
>
> Comments:  
>
> Company Name:  Microsoft Corporation
>
> File Description:  NT Layer DLL
>
> File Version:  6.0.6001.18000 (longhorn_rtm.080118-1840)
>
> Internal Name:  ntdll.dll
>
> Legal Copyright:  C Microsoft Corporation. All rights reserved.
>
> Legal Trademarks:  
>
> Original filename:  ntdll.dll
>
> Private Build:  
>
> Product Name:  MicrosoftR WindowsR Operating System
>
> Product Version:  6.0.6001.18000
>
> Special Build:  &
>
>  
>
> There is nothing obvious in Process Monitor which explains what is causing
> the error.
>
>  
>
> Do any of you have any ideas what could be causing this? Any advice would
be

> greatly appreciated.
>
>  
>
> Cheers
>
>  
>
> Steve
>
>


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RE: w3wp randomly crashes when redirector is used

Caldarale, Charles R
> From: Steve Ryan [mailto:[hidden email]]
> Subject: RE: w3wp randomly crashes when redirector is used
>
> Is there a more specific mailing list for such issues?

No, this is the proper mailing list.  Unfortunately, the problem is sufficiently esoteric (as well as having a work-around) so you're not likely to get much response from the user community.

 - Chuck


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RE: w3wp randomly crashes when redirector is used

Steve Ryan-3
Hi Chuck

Thanks for your reply.

It is indeed a strange problem. The work around unfortunately causes a
severe security risk (giving the DefaultAppPool the "Local System" identity
is similar to running Apache as root) so it isn't really an option.

If someone who works on the Tomcat Connectors project is reading this, do
you think this might be the same issue as bug 45063? If so, do you have any
sort of idea when 45063 might be looked at?

Thanks again for taking the time to read & respond to my e-mails.

Cheers

Steve

-----Original Message-----
From: Caldarale, Charles R [mailto:[hidden email]]
Sent: 03 February 2010 21:47
To: Tomcat Users List
Subject: RE: w3wp randomly crashes when redirector is used

> From: Steve Ryan [mailto:[hidden email]]
> Subject: RE: w3wp randomly crashes when redirector is used
>
> Is there a more specific mailing list for such issues?

No, this is the proper mailing list.  Unfortunately, the problem is
sufficiently esoteric (as well as having a work-around) so you're not likely
to get much response from the user community.

 - Chuck


THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY
MATERIAL and is thus for use only by the intended recipient. If you received
this in error, please contact the sender and delete the e-mail and its
attachments from all computers.


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Re: w3wp randomly crashes when redirector is used

André Warnier
In reply to this post by Steve Ryan-3
Steve Ryan wrote:
> My issue is due to Tomcat Connectors 1.2.28.
>
> Is there a more specific mailing list for such issues? The Tomcat Connectors
> website shows [hidden email] as the mailing list.
>
No. If your issue is indeed due to the Windows version of the mod_jk
connector, then you are on the correct list.

I am far from the specialist on the Windows/jk side of things, but I am
still puzzled however.
According to your explanation below, the application which crashes is
something called "w3wp.exe".  This does not really sound like an
application which lives under Java and Tomcat.
The jk redirector's function is to redirect (or rather "proxy") some
HTTP requests from IIS to a back-end Tomcat, so that these requests are
processed by a Tomcat-based application.  Conversely, the response from
this Tomcat-based application is then returned through the jk
redirector, back to IIS, and from there to the client.
What motivates my puzzlement is that, if w3wp.exe is really an
application which lives under IIS and not Tomcat, then there does not
seem to exist any reason why the jk redirector would have anything to do
with it.

My knowledge being limited, there might well be something I am missing
in all of this.


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RE: w3wp randomly crashes when redirector is used

Caldarale, Charles R
> From: André Warnier [mailto:[hidden email]]
> Subject: Re: w3wp randomly crashes when redirector is used
>
> My knowledge being limited, there might well be something I am missing
> in all of this.

All I'm going on is Mark T's comment on the bug report:

"Moving to TC6 to increase visibility."

Apparently, it still isn't that visible.  Perhaps the OP should add another example to the bug entry.

 - Chuck


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RE: w3wp randomly crashes when redirector is used

Steve Ryan-3
In reply to this post by André Warnier
Hi Andre

Thanks for your reply.

W3wp.exe is the process which manages the application pool where the
redirector lives.

I'm fairly confident the problem is due to the redirector because the crash
only occurs when the redirector is used. Also, there is an open bug (45063)
which appears to be a very similar issue.

I do of course accept the problem could lie at Microsoft's door though. :)

I guess I'm hoping someone has heard of this issue before, and knows of some
sort of workaround which doesn't involve using the "Local System" account.

Cheers

Steve

-----Original Message-----
From: André Warnier [mailto:[hidden email]]
Sent: 03 February 2010 21:58
To: Tomcat Users List
Subject: Re: w3wp randomly crashes when redirector is used

Steve Ryan wrote:
> My issue is due to Tomcat Connectors 1.2.28.
>
> Is there a more specific mailing list for such issues? The Tomcat
Connectors
> website shows [hidden email] as the mailing list.
>
No. If your issue is indeed due to the Windows version of the mod_jk
connector, then you are on the correct list.

I am far from the specialist on the Windows/jk side of things, but I am
still puzzled however.
According to your explanation below, the application which crashes is
something called "w3wp.exe".  This does not really sound like an
application which lives under Java and Tomcat.
The jk redirector's function is to redirect (or rather "proxy") some
HTTP requests from IIS to a back-end Tomcat, so that these requests are
processed by a Tomcat-based application.  Conversely, the response from
this Tomcat-based application is then returned through the jk
redirector, back to IIS, and from there to the client.
What motivates my puzzlement is that, if w3wp.exe is really an
application which lives under IIS and not Tomcat, then there does not
seem to exist any reason why the jk redirector would have anything to do
with it.

My knowledge being limited, there might well be something I am missing
in all of this.


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Re: w3wp randomly crashes when redirector is used

Peter Crowther
Steve, I'm with you - the issue does look unpleasantly similar.  I wonder
whether some experimentation with running the redirector under a local
account with particular rights set might tell you which right was required,
and hence which one might be causing an issue?

But in the longer term, the stack trace shows it's faulting in the
redirector's TerminateFilter, while waiting on a critical section.  Looking
at this plus the identical stack trace in Bugzilla, it does feel like it's
an issue with the redirector.

Does it always happen in your app, or is it intermittent?  If intermittent,
is it more likely to trigger when something's under load?

- Peter

On 3 February 2010 22:12, Steve Ryan <[hidden email]> wrote:

> Hi Andre
>
> Thanks for your reply.
>
> W3wp.exe is the process which manages the application pool where the
> redirector lives.
>
> I'm fairly confident the problem is due to the redirector because the crash
> only occurs when the redirector is used. Also, there is an open bug (45063)
> which appears to be a very similar issue.
>
> I do of course accept the problem could lie at Microsoft's door though. :)
>
> I guess I'm hoping someone has heard of this issue before, and knows of
> some
> sort of workaround which doesn't involve using the "Local System" account.
>
> Cheers
>
> Steve
>
> -----Original Message-----
> From: André Warnier [mailto:[hidden email]]
> Sent: 03 February 2010 21:58
> To: Tomcat Users List
> Subject: Re: w3wp randomly crashes when redirector is used
>
> Steve Ryan wrote:
> > My issue is due to Tomcat Connectors 1.2.28.
> >
> > Is there a more specific mailing list for such issues? The Tomcat
> Connectors
> > website shows [hidden email] as the mailing list.
> >
> No. If your issue is indeed due to the Windows version of the mod_jk
> connector, then you are on the correct list.
>
> I am far from the specialist on the Windows/jk side of things, but I am
> still puzzled however.
> According to your explanation below, the application which crashes is
> something called "w3wp.exe".  This does not really sound like an
> application which lives under Java and Tomcat.
> The jk redirector's function is to redirect (or rather "proxy") some
> HTTP requests from IIS to a back-end Tomcat, so that these requests are
> processed by a Tomcat-based application.  Conversely, the response from
> this Tomcat-based application is then returned through the jk
> redirector, back to IIS, and from there to the client.
> What motivates my puzzlement is that, if w3wp.exe is really an
> application which lives under IIS and not Tomcat, then there does not
> seem to exist any reason why the jk redirector would have anything to do
> with it.
>
> My knowledge being limited, there might well be something I am missing
> in all of this.
>
>
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