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Date: Thu, 10 Jan 2013 09:05:38 +0100
From: magnum <john.magnum@...hmail.com>
To: john-dev@...ts.openwall.com
Subject: Re: New plugin load order magic

On 10 Jan, 2013, at 8:48 , Solar Designer <solar@...nwall.com> wrote:
> On Sat, Jan 05, 2013 at 01:29:25AM +0100, magnum wrote:
>> All GPU formats are non-plugs, so load order is chosen manually in john.c. I think we should register them before all plugins and maybe even before the core formats. This means:
>> 
>> - If you have a GPU build and load crypt-md5 hashes without giving --format, the GPU format will load.
>> - If we register even before core, NT-opencl will take precedence not only before CPU NT, but also before the LM format.
>> 
>> Thoughts? I can see this is arguable. However, registering eg. wpapsk-opencl before the cpu version is a no-brainer, so I will do some of those if nothing else.
> 
> I think this broke --show:
> 
> $ ./john -sho pw
> OpenCL platform 0: NVIDIA CUDA, 1 device(s).
> Using device 0: GeForce GTX 570
> OpenCL platform 0: NVIDIA CUDA, 1 device(s).
> Using device 0: GeForce GTX 570
> Build log: 
> ptxas info    : Compiling entry function 'cryptmd5' for 'sm_20'
> ptxas info    : Function properties for cryptmd5
> 104 bytes stack frame, 0 bytes spill stores, 0 bytes spill loads
> ptxas info    : Used 32 registers, 44 bytes cmem[0], 11 bytes cmem[2], 8 bytes c
> mem[16]
> Local worksize (LWS) 128, Global worksize (GWS) 2097152
> OpenCL platform 0: NVIDIA CUDA, 1 device(s).
> Using device 0: GeForce GTX 570
> ****Please see 'opencl_bf_std.h' for device specific optimizations****
> u2-des:password:2:0:password::
> u3-des:computer:3:0:computer::
> 
> 2 password hashes cracked, 38 left
> OpenCL error (CL_INVALID_CONTEXT) in file (opencl_cryptmd5_fmt.c) at line (169) 
> - (Error Unmapping inbuffer)

Very strange. This indicates init() is called for at least two formats. Why would that happen for --show?

magnum

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