[Nut-upsuser] New intermediate Windows binaries release - 2.6.5-3

Denis Serov dns-srv at yandex.ru
Sat Oct 13 19:41:20 UTC 2012

Hello Frederic!

I found more information about this fault. It seems that is unhandled exception (writing to NULL-pointer):

First-chance exception at 0x7773e41b (ntdll.dll) in upsmon.exe: 0xC0000005: Access violation writing location 0x00000000.

The stack calls:

>	ntdll.dll!@RtlpLowFragHeapFree at 8()  + 0x89 bytes	
 	ntdll.dll!_RtlFreeHeap at 12()  + 0x7e bytes	
 	[Frames below may be incorrect and/or missing, no symbols loaded for AcXtrnal.dll]	
 	ntdll.dll!__RtlUserThreadStart at 8()  + 0x1b bytes

And now I see that this error was repeated more later releasing of 2.6.5-3 version (I have missed this point because of my custom filter for NUT in Event Viewer). The fault is stable reproduced in my environment and I think it doesn't related to any configuration files (I have played this different cases with the same result).

Hope this helps...


-----Original Message-----
From: FredericBohe at Eaton.com [mailto:FredericBohe at Eaton.com] 
Sent: Friday, October 12, 2012 12:13 PM
To: dns-srv at yandex.ru; nut-upsuser at lists.alioth.debian.org
Subject: RE: [Nut-upsuser] New intermediate Windows binaries release - 2.6.5-3

> From: nut-upsuser-bounces+fredericbohe=eaton.com at lists.alioth.debian.org [nut-upsuser-bounces+fredericbohe=eaton.com at lists.alioth.debian.org] on behalf of Denis Serov [dns-srv at yandex.ru]
> Sent: Tuesday, September 25, 2012 8:07 PM
> To: nut-upsuser at lists.alioth.debian.org
> Subject: Re: [Nut-upsuser] New intermediate Windows binaries release -  
> 2.6.5-3
> Hello!

Hello Denis,

> Stopping problem has gone in 2.6.5-3 version. But something wrong with closing of UPSMON. Every time then I am stopping NUT service (stable reproducing), the following error appears in Event Log:
> Faulting application name: upsmon.exe, version:, time stamp: 
> 0x5059adc8 Faulting module name: ntdll.dll, version: 6.1.7601.17725, 
> time stamp: 0x4ec49b8f Exception code: 0xc0000005 Fault offset: 
> 0x0002e41b Faulting process id: 0x5b0 Faulting application start time: 
> 0x01cd9b45a55919d2 Faulting application path: C:\Program Files 
> (x86)\NUT\sbin\upsmon.exe Faulting module path: 
> C:\Windows\SysWOW64\ntdll.dll Report Id: 
> 10040c12-0739-11e2-981e-001dbab5966a

Can't reproduce this here. Can you send your configuration files please.

> And I think I have found another issue. I started UPSMON process manually when NUT service was stopped during my experiments. After that, I started NUT service. There was > a garbage in UPSMON output (in manually executed instance, once detected):
> Execute command "cmd.exe /C C:\NUT\1.cmd upslost" OK
>    6.205691     Trying to connect to UPS [upsa at]
>    7.250892     UPS [upsa at]: connect failed: Connection failure: Unknown error
>    7.250892     do_notify: ntype 0x0008 (NOCOMM)
>    7.250892     UPS upsa at is unavailable
>    7.250892     Current power value: 1
>    7.266492     Minimum power value: 1
>   12.277778     Trying to connect to UPS [upsa at]
>   12.277778     Login on UPS [upsa at] failed - got [ERR ACCESS-DENIED]
>   12.277778     Current power value: 1
>   12.277778     Minimum power value: 1
>   17.285387     pollups: upsa at
>   17.300987     get_var: upsa at / status
>   17.300987     parse_status: [OL]
>   17.300987     do_notify: ntype 0x0004 (COMMOK)
>   17.300987     Communications with UPS upsa at established
>   17.316587     parsing: [OL]
>   17.316587     ups_on_line: upsa at (first time)
>   17.316587     Current power value: 1
>   17.T3i1m6e5r8 7q      uMeiunei meummp tpyo,w eerx ivtailnuge
> : 1
>   22.338275     pollups: upsa at
>   22.353875     get_var: upsa at / status
>   22.369475     parse_status: [OL]
>   22.369475     parsing: [OL]
>   22.369475     ups_on_line: upsa at (no change)
>   22.400675     Current power value: 1
> It may be possible problem with a memory buffer.

I don't think so. I seems that upssched output is mangled with upsmon output (upssched output is something like "Timer queue is empty, exiting"). This may happen because upsmon and upssched are sharing the same console since upssched is ran by upsmon. It's not beautiful, but it is not a bug.

> I will continue testing this version...

Thanks for that.


> OS: Windows 7 x64 Ultimate English
> UPS: APC Back-UPS ES-525
> Thanks,
> Denis



-----Original Message-----
From: nut-upsuser-bounces+dns-srv=yandex.ru at lists.alioth.debian.org [mailto:nut-upsuser-bounces+dns-srv=yandex.ru at lists.alioth.debian.org] On Behalf Of FredericBohe at Eaton.com
Sent: Wednesday, September 19, 2012 5:14 PM
To: nut-upsuser at lists.alioth.debian.org
Subject: [Nut-upsuser] New intermediate Windows binaries release - 2.6.5-3


There is a new intermediate Windows binaries release available at :


This fixes a regression about stopping the NUT service.

Feedback is highly appreciated.


Eaton Opensource Team - http://opensource.eaton.com



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