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Message-ID: <BLU0-SMTP1237F722D2F98CD31BBA373FDCB0@phx.gbl>
Date: Thu, 2 Jan 2014 16:23:07 +0100
From: Frank Dittrich <frank_dittrich@...mail.com>
To: john-dev@...ts.openwall.com
Subject: Problem loading dynamic formats with TestD=... lines (was: Segfault
with linux-x86-64-clang-debug)
>> See attached file backtrace.txt
>
> Ok... Not sure what to make out of that. It's dynamic crashing, not crypt.
Yes, any command which causes dynamic formats being loaded causes the
same segfault with linux-x86-64-clang-debug.
I tracked this down to the
TestD=$dynamic20nn$ lines in run/dynamic_flat_sse_formats.conf
For some reason, these lines are not processed correctly, so that
Setup->pPreloads[i].ciphertext[0] is NULL in dynamic_SETUP at
dynamic_fmt.c:7224
if (Setup->pPreloads[i].ciphertext[0] == 'A' &&
Setup->pPreloads[i].ciphertext[1] == '=') {
I wonder how gcc builds survived this without a segfault.
Jim, the backtrace has been posted in my previous message:
http://www.openwall.com/lists/john-dev/2014/01/02/22
Commenting out all the TestD= lines in run/dynamic_flat_sse_formats.conf
makes the bug disappear.
Changing the TestD= lines into Test= lines also avoids the segfault.
And --format=dynamic_2014 still passes self test with that change.
What is the purpose of TestD?
Frank
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