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Message-ID: <20150813190423.GA21231@openwall.com>
Date: Thu, 13 Aug 2015 22:04:23 +0300
From: Solar Designer <solar@...nwall.com>
To: john-dev@...ts.openwall.com
Subject: Re: --test-full=0 crashes the Bitcoin format
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.
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 think that the only thing you're achieving so far is preventing others
from using super for benchmarking. So please stop.
Thanks,
Alexander
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