Date: Fri, 14 Aug 2015 10:06:26 +0800 From: Kai Zhao <loverszhao@...il.com> To: john-dev@...ts.openwall.com Subject: Re: --test-full=0 crashes the Bitcoin format Hi Alexander, On Fri, Aug 14, 2015 at 3:04 AM, Solar Designer <solar@...nwall.com> wrote: > Hi Kai, > > On Fri, Aug 07, 2015 at 08:14:11AM +0800, Kai Zhao wrote: >> I will debug this crash. > > Can you explain what you're trying to achieve by running: > > kai 11232 1700 0.0 2413320 7436 ? Sl Aug12 25756:30 ./john --test-full=0 --format=bitcoin > > for a day now? Are you hoping to trigger this crash? If so, no, I > don't expect you will: I only saw it happen (twice) when running > "--test-full=0" without "--format=bitcoin". It is quite clear that > having other formats test-full'ed prior to Bitcoin is a prerequisite to > triggering this crash. I keep it running for a day because Agnieszka wanted me to keep running a job and he needs that to debug. Sorry for the inconvenience. Agnieszka still need me to run my before I went to bed, so I kept it running. I did reproduce the crash by "--test-full=0 --format=bitcoin". And the crash information seems the same with yours. > Also, how did you achieve that this process is running for a day and is > not terminating? Normally, even a full test of the Bitcoin format won't > be taking this long, would it? > > And, do you have an idea why this process tends to consume exactly 1700% > of CPU (17 active threads)? I checked /proc/11232/environ and to my > surprise I did not find OMP_NUM_THREADS=17 in there. Can you explain? > I can not explain why the process tends to consume exactly 1700%. I did this: $ ./configure --enable-asan $ make -sj8 $ ./loop.sh The content of loop.sh is below: #!/bin/bash c=1 i=0 while [ $c -le 100000 ] do echo "" echo $c echo "" ./john --test-full=0 --format=bitcoin echo "" echo $? echo "" if [ $? -ne 0 ];then ((i++)) fi ((c++)) done echo "There are $i crashes." Thanks, Kai
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