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Date: Sat, 23 Jun 2012 00:26:08 +0200
From: Frank Dittrich <>
Subject: $ ./john --test=0 segfaults on rar format (was: $ ./john --test=0
 segfaults on wpapsk format for linux-x86-sse2 build)

On 06/22/2012 11:48 PM, jfoug wrote:
>> From: Frank Dittrich []
>> So wpapsk is still broken in magnum-jumbo for linux-x86-sse2 (32bit).
> It works fine for me, on cygwin-sse and cygwin-ssei.

OK, I rebuilt with debugging options, and this time I as lucky, I got
the segfault even in gdb.
If wasn't in wpapsk test (that's why, I couldn't reproduce.
The segfault occurred in rar self test.
(May be we should flush the buffers before starting the next self test.
Then I would have seen that wpapsk completed, which I didn't now -
judging from the output.)

Here are the details:

Program received signal SIGSEGV, Segmentation fault.
0x44ac2200 in malloc_consolidate.part.3 () from /lib/
Missing separate debuginfos, use: debuginfo-install
glibc-2.14.90-24.fc16.7.i686 keyutils-libs-1.5.2-1.fc16.i686
krb5-libs-1.9.3-2.fc16.i686 libcom_err-1.41.14-2.fc15.i686
libselinux-2.1.6-6.fc16.i686 nss-softokn-freebl-3.13.4-1.fc16.i686
openssl-1.0.0j-1.fc16.i686 zlib-1.2.5-6.fc16.i686
(gdb) bt
#0  0x44ac2200 in malloc_consolidate.part.3 () from /lib/
#1  0x44ac3d87 in _int_malloc () from /lib/
#2  0x44ac6395 in malloc () from /lib/
#3  0x080e433b in mem_alloc (size=4249623) at memory.c:54
#4  0x080e4448 in mem_alloc_tiny (size=4249620, align=3) at memory.c:84
#5  0x080e4488 in mem_calloc_tiny (size=4249620, align=4) at memory.c:93
#6  0x08095bae in init (pFmt=0x8160880) at rar_fmt.c:666
#7  0x080dc90e in fmt_init (format=0x8160880) at formats.c:31
#8  0x080d66cc in benchmark_all () at bench.c:386
#9  0x080e0f8f in john_run () at john.c:831
#10 0x080e1591 in main (argc=2, argv=0xbffff2c4) at john.c:1042

 rar_fmt.c:666 is
	unpack_data = mem_calloc_tiny(sizeof(unpack_data_t) * omp_t,

Unfortunately, magnum will be away for a few days.
I'll probably not have time right now to dig into it.


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