Hang on KEVENT

Hi,

I can see that there are multiple processes trying to acquire an event
with KeWaitForSingleObject. Is there a way to find out the owner of the
event?

Calin


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Events do not have owners. Assuming this is your code, you need to see
what code was supposed to call KeSetEvent and why it was not called.


Don Burn (MVP, Windows DDK)
Windows 2k/XP/2k3 Filesystem and Driver Consulting
Website: http://www.windrvr.com
Blog: http://msmvps.com/blogs/WinDrvr
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“Calin Iaru” wrote in message news:xxxxx@windbg…
> Hi,
>
> I can see that there are multiple processes trying to acquire an event
> with KeWaitForSingleObject. Is there a way to find out the owner of the
> event?
>
> Calin
>
>
>
> ____________________________________________________________________________________
> Building a website is a piece of cake. Yahoo! Small Business gives you
> all the tools to get online.
> http://smallbusiness.yahoo.com/webhosting
>

Hi Don,

It’s not so easy to replicate this bug. KEVENT has a member called
WaitListHead. Perhaps it’s possible to extract more info, though I don’t
have more ideas.

Best regards,
Calin

— Don Burn wrote:

> Events do not have owners. Assuming this is your code, you need to see
>
> what code was supposed to call KeSetEvent and why it was not called.
>
>
> –
> Don Burn (MVP, Windows DDK)
> Windows 2k/XP/2k3 Filesystem and Driver Consulting
> Website: http://www.windrvr.com
> Blog: http://msmvps.com/blogs/WinDrvr
> Remove StopSpam to reply
>
> “Calin Iaru” wrote in message
> news:xxxxx@windbg…
> > Hi,
> >
> > I can see that there are multiple processes trying to acquire an event
> > with KeWaitForSingleObject. Is there a way to find out the owner of
> the
> > event?
> >
> > Calin
> >
> >
> >
> >
>

> > Building a website is a piece of cake. Yahoo! Small Business gives you
>
> > all the tools to get online.
> > http://smallbusiness.yahoo.com/webhosting
> >
>
>
>
> —
> You are currently subscribed to windbg as: xxxxx@yahoo.com
> To unsubscribe send a blank email to xxxxx@lists.osr.com
>


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Wait list head will just show you who is waiting, which you can get
elsewise. There is no more info, you have a logic bug, so you are going to
have to find it.


Don Burn (MVP, Windows DDK)
Windows 2k/XP/2k3 Filesystem and Driver Consulting
Website: http://www.windrvr.com
Blog: http://msmvps.com/blogs/WinDrvr
Remove StopSpam to reply

“Calin Iaru” wrote in message news:xxxxx@windbg…
> Hi Don,
>
> It’s not so easy to replicate this bug. KEVENT has a member called
> WaitListHead. Perhaps it’s possible to extract more info, though I don’t
> have more ideas.
>
> Best regards,
> Calin
>
> — Don Burn wrote:
>
>> Events do not have owners. Assuming this is your code, you need to see
>>
>> what code was supposed to call KeSetEvent and why it was not called.
>>
>>
>> –
>> Don Burn (MVP, Windows DDK)
>> Windows 2k/XP/2k3 Filesystem and Driver Consulting
>> Website: http://www.windrvr.com
>> Blog: http://msmvps.com/blogs/WinDrvr
>> Remove StopSpam to reply
>>
>> “Calin Iaru” wrote in message
>> news:xxxxx@windbg…
>> > Hi,
>> >
>> > I can see that there are multiple processes trying to acquire an event
>> > with KeWaitForSingleObject. Is there a way to find out the owner of
>> the
>> > event?
>> >
>> > Calin
>> >
>> >
>> >
>> >
>>
>
>> > Building a website is a piece of cake. Yahoo! Small Business gives you
>>
>> > all the tools to get online.
>> > http://smallbusiness.yahoo.com/webhosting
>> >
>>
>>
>>
>> —
>> You are currently subscribed to windbg as: xxxxx@yahoo.com
>> To unsubscribe send a blank email to xxxxx@lists.osr.com
>>
>
>
>
>
>

> Be a better Globetrotter. Get better travel answers from someone who
> knows. Yahoo! Answers - Check it out.
> http://answers.yahoo.com/dir/?link=list&sid=396545469
>

You are right and already looked at the KeWaitForEvent to see which one is
not guarded. No success yet.

— Don Burn wrote:

> Wait list head will just show you who is waiting, which you can get
> elsewise. There is no more info, you have a logic bug, so you are going
> to
> have to find it.
>
>
> –
> Don Burn (MVP, Windows DDK)
> Windows 2k/XP/2k3 Filesystem and Driver Consulting
> Website: http://www.windrvr.com
> Blog: http://msmvps.com/blogs/WinDrvr
> Remove StopSpam to reply
>
> “Calin Iaru” wrote in message
> news:xxxxx@windbg…
> > Hi Don,
> >
> > It’s not so easy to replicate this bug. KEVENT has a member called
> > WaitListHead. Perhaps it’s possible to extract more info, though I
> don’t
> > have more ideas.
> >
> > Best regards,
> > Calin
> >
> > — Don Burn wrote:
> >
> >> Events do not have owners. Assuming this is your code, you need to
> see
> >>
> >> what code was supposed to call KeSetEvent and why it was not called.
> >>
> >>
> >> –
> >> Don Burn (MVP, Windows DDK)
> >> Windows 2k/XP/2k3 Filesystem and Driver Consulting
> >> Website: http://www.windrvr.com
> >> Blog: http://msmvps.com/blogs/WinDrvr
> >> Remove StopSpam to reply
> >>
> >> “Calin Iaru” wrote in message
> >> news:xxxxx@windbg…
> >> > Hi,
> >> >
> >> > I can see that there are multiple processes trying to acquire an
> event
> >> > with KeWaitForSingleObject. Is there a way to find out the owner of
> >> the
> >> > event?
> >> >
> >> > Calin
> >> >
> >> >
> >> >
> >> >
> >>
> >
>

> >> > Building a website is a piece of cake. Yahoo! Small Business gives
> you
> >>
> >> > all the tools to get online.
> >> > http://smallbusiness.yahoo.com/webhosting
> >> >
> >>
> >>
> >>
> >> —
> >> You are currently subscribed to windbg as: xxxxx@yahoo.com
> >> To unsubscribe send a blank email to
> xxxxx@lists.osr.com
> >>
> >
> >
> >
> >
> >
>

> > Be a better Globetrotter. Get better travel answers from someone who
> > knows. Yahoo! Answers - Check it out.
> > http://answers.yahoo.com/dir/?link=list&sid=396545469
> >
>
>
>
> —
> You are currently subscribed to windbg as: xxxxx@yahoo.com
> To unsubscribe send a blank email to xxxxx@lists.osr.com
>

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Sorry, what do you exactly mean by owner of the event ? Events are not
‘owned’ by a thread such as mutexes. Do you want to find info on the event
or info on the thread which waits for it ?

/Daniel

“Calin Iaru” wrote in message news:xxxxx@windbg…
> Hi,
>
> I can see that there are multiple processes trying to acquire an event
> with KeWaitForSingleObject. Is there a way to find out the owner of the
> event?
>
> Calin
>