fio 2.1.4 intermittently crashes on windows

[Todd Dworshak <todd.dworshak@xxxxxxxx>]

Hi –

I am having trouble with fio intermittently crashing on Windows 7.

Version is fio 2.1.4 64 bit, downloaded from Windows build site.

Has anyone else seen this?  If I give it fewer files in the job description, it seems to be less prone to crashing.  Since it crashes in pthreads, it looks like this may be some kind of threading bug.

Call stack of fio dump file is as follows:
                kernel32.dll!WerpReportFaultInternal()  + 0x215 bytes  
               kernel32.dll!WerpReportFault()  + 0x77 bytes     
               kernel32.dll!BasepReportFault()  + 0x1f bytes    
               kernel32.dll!UnhandledExceptionFilter()  + 0x1fc bytes  
               ntdll.dll!string "Enabling heap debug options\n"()  + 0xc9c8 bytes             
               ntdll.dll!__C_specific_handler()  + 0x9c bytes     
               ntdll.dll!RtlpExecuteHandlerForException()  + 0xd bytes                
               ntdll.dll!RtlDispatchException()  + 0x38f bytes    
               ntdll.dll!RtlRaiseStatus()  + 0x60 bytes    
               ntdll.dll!string "Enabling heap debug options\n"()  - 0x17a4e bytes           
               ntdll.dll!KiUserExceptionDispatcher()  + 0x2e bytes         
               libwinpthread-1.dll!0000000064943236()               
                [Frames below may be incorrect and/or missing, no symbols loaded for libwinpthread-1.dll]       
               000000000000000a()       
               fio.exe!0000000000421599()       
                fio.exe!0000000000437ce0()       
                fio.exe!000000000043809d()       
                fio.exe!00000000004013a5()       
                fio.exe!00000000004014d8()       
                kernel32.dll!BaseThreadInitThunk()  + 0xd bytes               
               ntdll.dll!RtlUserThreadStart()  + 0x21 bytes          

Job description follows:

[global]
ioengine=windowsaio
buffered=0
rw=read
bs=4m
size=4000m
iodepth=3
runtime=90

[file1]
filename=z\:\test1a.dat
rate=80m

[file2]
filename=z\:\test2a.dat
rate=80m

[file3]
filename=z\:\test3a.dat
rate=80m

[file4]
filename=z\:\test4a.dat
rate=80m

[file5]
filename=z\:\test5a.dat
rate=80m

[file6]
filename=z\:\test6a.dat
rate=80m

[file7]
filename=z\:\test7a.dat
rate=80m

[file8]
filename=z\:\test8a.dat
rate=80m

[file9]
filename=z\:\test9a.dat
rate=80m

[file10]
filename=z\:\test10a.dat
rate=80m

Thanks in advance for any help you can provide.

Todd Dworshak--
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