Intermittent NRecord Crash When Changing Channels (using Kodi)

[mutichip]

Since upgrading today to the latest version, my NPVR Recording Service crashes intermittently when changing channels in Kodi.
I have HDHomerun Connect & Prime set up, and it happens with both tuners

Log files are attached, Event Viewer shows the following:


An unhandled exception occurred and the process was terminated.

Application ID: NRecord.exe

Process ID: 4284

Exception: System.NullReferenceException

Message: Object reference not set to an instance of an object.

StackTrace: at Native.HDHomeRunCapture.StopStream(Int32 streamHandle)
at NShared.HDHomeRunRecorder.StopStream(Int32 streamHandle)
at NShared.RecordingService.WorkerThread()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()

Application: NRecord.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.NullReferenceException
at Native.HDHomeRunCapture.StopStream(Int32)
at NShared.HDHomeRunRecorder.StopStream(Int32)
at NShared.RecordingService.WorkerThread()
at System.Threading.ThreadHelper.ThreadStart_Context(System.Object)
at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)
at System.Threading.ThreadHelper.ThreadStart()

Faulting application name: NRecord.exe, version: 1.0.0.0, time stamp: 0x5b11f5b4
Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000
Exception code: 0xc0000005
Fault offset: 0x096e5eeb
Faulting process id: 0x10bc
Faulting application start time: 0x01d3fd435a577ec4
Faulting application path: C:\Program Files (x86)\NPVR\NRecord.exe
Faulting module path: unknown
Report Id: 855ded7c-6937-11e8-80f3-3c4a92f111eb
Faulting package full name:
Faulting package-relative application ID:

[sub]

if you create a c:\temp directory, do you get a c:\temp\crash.mdmp when then this happens?

[mutichip]

Yes it does. Attaching...

[sub]

Can you see if this patch helps?

[mutichip]

I observed the same behavior with the patch. Here are some new logs and dumps using the new dll.

[2leftfeet]

This morning, the intermittent nrecord crash, noted by multichip, nailed me twice while changing channels in Kodi - first time this has ever happened to me - second day after upgrading to 4.2.1.

Unfortunately, I was not in a position to collect log data, but will definitely do so the next time this happens.

[2leftfeet]

OK, just happened a 3rd time this morning - this is getting old quickly!


logs attached:

[2leftfeet]

sub, I ran some tests as you requested:
1st, I selected two channels on the HDHR5 connect and switched channels 10 times, staying on the HDHR5 device - no problems
2nd, I selected 2 channels, one on the HDHR5 and one on HDHR4, switched channels 10 times - switched channels/devices no problems.
3rd, stopped live TV, the started a channel on the Prime - it played
4th, attempted to change channel to another channel on Prime and BAM - first attempt at channel change, nrecord crashed.

As noted earlier switching from Prime to Connect caused a crash earlier in day.

I have not seen the crashing, so far, when changing channels on the same Connect and between the Connects.

When changing channels between Prime and Connects and between Prime and Prime, crashes occur frequently.

[sub]

Are you able to reproduce the same issue when using the NextPVR front end, instead of Kodi?

[2leftfeet]

If you recall (probably not), since the day I started using Nextpvr, whenever I tried changing channels on the Prime, the client would lock up after a couple of channel changes - this had prompted me to switch to kodi as a client and have had no such issues, that is until 4.2.1.

However, I will try the nextpvr front end, although I am fearful that the client lockup issue, mentioned above, might pollute the results of testing for the nrecord crash issue.