Re: fio 2.1.4 intermittently crashes on windows

[Sitsofe Wheeler <sitsofe@yahoo.com>]

On Fri, Jan 10, 2014 at 04:46:05PM +0000, Elliott, Robert (Server Storage) wrote:
 
> 3. The assert does not trigger, and the same crash occurs as before.
> 
> C:\Users\Administrator\fio>c:\cygwin64\bin\gdb -args "c:/program files/fio/fio.exe" --filename=rob.tmp --size=128m --direct=1 --rw=randread --refill_buffers --norandommap --randrepeat=0 --bs=4k --iodepth=16 --numjobs=16 --runtime=60 --group_reporting --name=4ktest --time_based
> Jobs: 0 (f=0)
> Program received signal SIGSEGV, Segmentation fault.
> 0x0000000064943236 in pthread_mutex_unlock ()
>    from /cygdrive/c/program files/fio/libwinpthread-1.dll

I've finally had time to reproduce this on a Windows 7 box. I use a
different command line:

./fio.exe --debug=all --filename=fiojob --thread --size=512 --rw=read --bs=512 --ioengine=sync --verify_pattern=0xdeadbeef --name=fiojobname

The problem appears to be that the mutex is being destroyed while it is
still being held by a different thread. Adding return; to the first line
of fio_mutex_remove in mutex.c papers over the problem...

-- 
Sitsofe | http://sucs.org/~sits/