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  Message 1 of 5  
17 Mar 17 08:02
sanjay jha
xxxxxx@gmail.com
Join Date: 17 Mar 2017
Posts To This List: 2
System getting crash

Hello everyone, I have two driver program. One is USB driver and other is Virtual com port driver. I send IOCTL request from Virtual com port driver to USB driver to sending a vendor request from USB driver to printer device. mean while i disconnect the printer. USB driver send request to printer to get printer status. After completion of request process my system getting crash. Thank you.
  Message 2 of 5  
17 Mar 17 10:04
Chris Aseltine
xxxxxx@gmail.com
Join Date: 23 Sep 2006
Posts To This List: 1219
System getting crash

sanjay jha wrote: > I have two driver program. One is USB driver and other is Virtual > com port driver. I send IOCTL request from Virtual com port driver > to USB driver to sending a vendor request from USB driver to printer > device. mean while i disconnect the printer. USB driver send request > to printer to get printer status. After completion of request process > my system getting crash. That's great. So did you have a question?
  Message 3 of 5  
17 Mar 17 12:21
sanjay jha
xxxxxx@gmail.com
Join Date: 17 Mar 2017
Posts To This List: 2
System getting crash

I have two driver program. One is USB driver and other is Virtual com port driver. I send IOCTL request from Virtual com port driver to USB driver to sending a vendor request from USB driver to printer device. mean while i disconnect the printer. USB driver send request to printer to get printer status. After completion of request process my system getting crash. Please suggest what to do?
  Message 4 of 5  
17 Mar 17 12:54
Slava Imameev
xxxxxx@hotmail.com
Join Date: 13 Sep 2013
Posts To This List: 120
System getting crash

1. attach WinDBG to the test PC or open C:\Windows\Memory.dmp from the test PC in WinDBG 2. set the symbol path as SRV*http://msdl.microsoft.com/download/symbols 3. enter in WinDBG command line ( at system crash or when the symbol load completes for the dump file ) !analyze -v 4. provide the output here 5. ?????? 6. PROFIT!
  Message 5 of 5  
17 Mar 17 15:06
Tim Roberts
xxxxxx@probo.com
Join Date: 28 Jan 2005
Posts To This List: 11354
System getting crash

xxxxx@gmail.com wrote: > I have two driver program. One is USB driver and other is Virtual com port driver. I send IOCTL request from Virtual com port driver to USB driver to sending a vendor request from USB driver to printer device. mean while i disconnect the printer. USB driver send request to printer to get printer status. After completion of request process my system getting crash. Please suggest what to do? You debug the problem, either by analyzing the crash dump or attaching a kernel debugger. Have you enabled Driver Verifier? It is very good at pinpointing usage problems in cases like this. You'll still have to use a debugger to catch the verifier failures. -- Tim Roberts, xxxxx@probo.com Providenza & Boekelheide, Inc.
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