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Message-ID: <e93f0528-5778-44fd-a46b-e044ff4a734f@gmail.com>
Date: Mon, 2 Sep 2024 20:01:09 +0200
From: Andrea <muradin80@...il.com>
To: john-users@...ts.openwall.com
Subject: How to debug segmentation fault using OpenCL and ROCM
Hi everyone,
I have just recently started to learn using JtR tool and I would like to
enable OpenCL capabilities.
Unfortunately, running some tests, I'm always getting segmentation fault
error; I would like to understand the best way to debug the issue and
track it down to understand if the issue is related to either ROCM,
OpenCL or JtR (or a mix of them).
Example of command and related error:
john --test=0 --format=sha256crypt-opencl
Device 1: gfx90c:xnack- [AMD Radeon Graphics]
Testing: sha256crypt-opencl, crypt(3) $5$ (rounds=5000) [SHA256
OpenCL]... Build log: warning: argument unused during compilation: '-I
opencl' [-Wunused-command-line-argument]
1 warning generated.
Segmentation fault
Additional preliminary info:
john --list=opencl-devices
Platform #0 name: AMD Accelerated Parallel Processing, version: OpenCL
2.1 AMD-APP.dbg (3614.0)
Device #0 (1) name: gfx90c:xnack-
Board name: AMD Radeon Graphics
Device vendor: Advanced Micro Devices, Inc.
Device type: GPU (LE)
Device version: OpenCL 2.0
OpenCL version support: OpenCL C 2.0
Driver version: 3614.0 (HSA1.1,LC) - AMDGPU-Pro
Native vector widths: char 4, short 2, int 1, long 1
Preferred vector width: char 4, short 2, int 1, long 1
Global Memory: 512 MiB
Global Memory Cache: 16 KiB
Local Memory: 64 KiB (Local)
Constant Buffer size: 384 MiB
Max memory alloc. size: 384 MiB
Max clock (MHz): 1500
Profiling timer res.: 1 ns
Max Work Group Size: 256
Parallel compute cores: 6
Stream processors: 384 (6 x 64)
Speed index: 576000
SIMD width: 16
Wavefront width: 64
PCI device topology: 04:00.0
john --list=build-info
Version: 1.9.0-jumbo-1+bleeding-9daf16b574 2024-01-02 05:20:52 +0100
Build: linux-gnu 64-bit x86_64 AVX2 AC OMP OPENCL
SIMD: AVX2, interleaving: MD4:3 MD5:3 SHA1:1 SHA256:1 SHA512:1
System-wide exec: /usr/bin
System-wide home: /etc/john
Private home: ~/.john
CPU tests: AVX2
$JOHN is /etc/john/
Format interface version: 14
Max. number of reported tunable costs: 4
Rec file version: REC4
Charset file version: CHR3
CHARSET_MIN: 1 (0x01)
CHARSET_MAX: 255 (0xff)
CHARSET_LENGTH: 24
SALT_HASH_SIZE: 1048576
SINGLE_IDX_MAX: 2147483648
SINGLE_BUF_MAX: 4294967295
Effective limit: Number of salts vs. SingleMaxBufferSize
Max. Markov mode level: 400
Max. Markov mode password length: 30
gcc version: 13.3.1
GNU libc version: 2.39 (loaded: 2.39)
OpenCL headers version: 1.2
Crypto library: OpenSSL
OpenSSL library version: 0300000d0
OpenSSL 3.0.13 30 Jan 2024
GMP library version: 6.3.0
File locking: fcntl()
fseek(): fseek
ftell(): ftell
fopen(): fopen
memmem(): System's
times(2) sysconf(_SC_CLK_TCK) is 100
Using times(2) for timers, resolution 10 ms
HR timer: clock_gettime(), latency 1.467 us
Total physical host memory: 15408 MiB
Available physical host memory: 8811 MiB
Terminal locale string: en_GB.utf8
Parsed terminal locale: UTF-8
Side note, I'm using a package from Linux Gentoo, which I have compiled
on my PC, but not the vanilla source of JtR.
Thanks in advance,
Andrea
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