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Re: BUG #6201: Windows User Log Off Causes Backend Exception 0xC0000142

From: Craig Ringer <ringerc(at)ringerc(dot)id(dot)au>
To: Jerome Schulteis <jerome(dot)schulteis(at)edstrom(dot)com>
Cc: pgsql-bugs(at)postgresql(dot)org
Subject: Re: BUG #6201: Windows User Log Off Causes Backend Exception 0xC0000142
Date: 2011-09-10 00:53:13
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-bugs
On 10/09/2011 4:59 AM, Jerome Schulteis wrote:
> The following bug has been logged online:
> Bug reference:      6201
> Logged by:          Jerome Schulteis
> Email address:      jerome(dot)schulteis(at)edstrom(dot)com
> PostgreSQL version: 9.0.4
> Operating system:   Windows XP Pro SP3
> Description:        Windows User Log Off Causes Backend Exception 0xC0000142
> Details:
> It does not happen on every log off, but if the Windows console user logs
> off
> of the server at just the wrong time while a backend is starting up, the
> backend terminates with exception 0xC0000142 (STATUS_DLL_INIT_FAILED), and
> the
> PostgreSQL Windows service stops (shared memory block is still in use):
I wonder which DLL failed? It seems that PostgreSQL doesn't print the 
message the operating system generates for these errors. For example, it 
should be printing:

"{DLL Initialization Failed} Initialization of the dynamic link library 
%hs failed. The process is terminating abnormally."

... where %hs is the DLL name or path. I should have a play with that 
once I finish moving house...

Do you have any antivirus or antimalware products on the system?

Do you have a Logitech webcam? Their webcam effects app adds a hook DLL 
to every process on the system, and I've seen it cause issues with MinGW 
among other things before.

If you launch a trivial process like "notepad.exe" then launch Process 
Explorer from SysInternals, select notepad.exe and press control-D to 
show the DLL list, what non-Microsoft DLLs are shown? You can copy and 
paste the list.

If you examine a running postgres.exe backend (one of the processess 
listed UNDER the main "postgres.exe" which is the postmaster) the same 
way, what non-Microsoft DLLs are shown there? Note that you may have to 
run Process Explorer as administrator to view the DLL list for 
postgres.exe. Ignore any DLLs ending in ".NLS" .

For bonus points, verify each Microsoft DLL as having a valid signature 
by double-clicking on it in the list, and report any DLLs that fail 

Craig Ringer

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Subject: BUG #6202: type of union column selection bug
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