Re: [dm-crypt] crypsetup segfaulting during luksFormat

From: Arno Wagner <arno@wagner.name>
To: dm-crypt@saout.de
Subject: Re: [dm-crypt] crypsetup segfaulting during luksFormat
Date: Wed, 7 Jul 2010 19:36:58 +0200	[thread overview]
Message-ID: <20100707173658.GA20180@tansi.org> (raw)
In-Reply-To: <1278523178.9943.5.camel@Koma-Station.localdomain>

Just a guess: Your CPU is too fast, the time
measurement for the PKBF2 iterations did not 
expect that and does nonesense, resutling in 
the segfault.

Tht would be a classic ;-)

Arno

On Wed, Jul 07, 2010 at 07:19:38PM +0200, Sven Eschenberg wrote:
> Hi list,
> 
> I was just trying to setup a new luks device, and for some reason (I
> cannot determine yet) cryptsetup just segfaults (setting up the old
> mappings works as usual).
> 
> These are the last couple lines before cryptsetup dies:
> 2370  read(4, "|\27\211<e\263\36\35j\201j\204e\326 \270\364\277\373
> \300LY[\343d[\215\32\17\315N\333", 32) = 32
> 2370  open("/dev/md125", O_RDONLY)      = 5
> 2370  ioctl(5, BLKIOMIN, 0x7fff561ea000) = 0
> 2370  ioctl(5, BLKIOOPT, 0x7fff561e9ff8) = 0
> 2370  ioctl(5, BLKALIGNOFF, 0x7fff561ea00c) = 0
> 2370  close(5)                          = 0
> 2370  read(4, "\242\270\205|\207@\253\227 \321)\f\r/\"R>EN(wo\224\205\7e
> \36\313g\232\n\33", 32) = 32
> 2370  rt_sigaction(SIGVTALRM, {0x40d3f0, [VTALRM], SA_RESTORER|
> SA_RESTART, 0xf0000000fc0c748}, {SIG_DFL, [], 0}, 8) = 0
> 2370  setitimer(ITIMER_VIRTUAL, {it_interval={0, 0}, it_value={1, 0}},
> NULL) = 0
> 2370  --- SIGVTALRM (Virtual timer expired) @ 0 (0) ---
> 2370  --- SIGSEGV (Segmentation fault) @ 0 (0) ---
> 2370  +++ killed by SIGSEGV +++
> 
> where /dev/md125 is the device I am trying to setup via luksFormat.
> 
> Anyone with any suggestion what the problem can be?
> 
> Oh I forgot:
> cryptsetup --version
> cryptsetup 1.1.2
> 
> Regards
> 
> -Sven
> 
> 
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> dm-crypt mailing list
> dm-crypt@saout.de
> http://www.saout.de/mailman/listinfo/dm-crypt
> 

-- 
Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email: arno@wagner.name 
GnuPG:  ID: 1E25338F  FP: 0C30 5782 9D93 F785 E79C  0296 797F 6B50 1E25 338F
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