Unstable OpenCL driver detected!
#1
Hi,

I am getting below when running hashcat --benchmark. How do I get a stable OpenCL driver? I have one of the latest  official Intel compute runtimes installed (v20.44.18297 - released 21 days ago).

Code:
hashcat (v6.1.1) starting in benchmark mode...

Benchmarking uses hand-optimized kernel code by default.
You can use it in your cracking session by setting the -O option.
Note: Using optimized kernel code limits the maximum supported password length.
To disable the optimized kernel code in benchmark mode, use the -w option.

* Device #1: Unstable OpenCL driver detected!

This OpenCL driver has been marked as likely to fail kernel compilation or to produce false negatives.
You can use --force to override this, but do not report related errors.

No devices found/left.

Running with --force:

Code:
hashcat (v6.1.1) starting in benchmark mode...

Benchmarking uses hand-optimized kernel code by default.
You can use it in your cracking session by setting the -O option.
Note: Using optimized kernel code limits the maximum supported password length.
To disable the optimized kernel code in benchmark mode, use the -w option.

You have enabled --force to bypass dangerous warnings and errors!
This can hide serious problems and should only be done when debugging.
Do not report hashcat issues encountered when using --force.
OpenCL API (OpenCL 3.0 ) - Platform #1 [Intel(R) Corporation]
=============================================================
* Device #1: Intel(R) Graphics Gen9 [0x9bca], 12500/12564 MB (4095 MB allocatable), 24MCU

Benchmark relevant options:
===========================
* --force
* --optimized-kernel-enable

.......

Linux version/CPU:
Code:
Linux XXXXX 5.9.8-arch1-1 #1 SMP PREEMPT Tue, 10 Nov 2020 22:44:11 +0000 x86_64 GNU/Linux
Intel(R) Core(TM) i7-10710U CPU @ 1.10GHz

Installed drivers:
Code:
12 community/intel-opencl-clang 11.0.0-1 (97.4 KiB 962.0 KiB) (Installed)
11 community/intel-graphics-compiler 1:1.0.5353-2 (11.9 MiB 50.3 MiB) (Installed)
10 community/intel-compute-runtime 20.44.18297-1 (2.3 MiB 12.9 MiB) (Installed)
7 community/clinfo 2.2.18.04.06-2 (39.3 KiB 106.7 KiB) (Installed)
4 extra/opencl-headers 2:2020.06.16-1 (39.4 KiB 275.9 KiB) (Installed)
2 extra/ocl-icd 2.2.13-1 (52.6 KiB 221.6 KiB) (Installed)

clinfo:
Code:
Number of platforms                              1
  Platform Name                                  Intel(R) OpenCL HD Graphics
  Platform Vendor                                Intel(R) Corporation
  Platform Version                                OpenCL 3.0
  Platform Profile                                FULL_PROFILE
  Platform Extensions                            cl_khr_byte_addressable_store cl_khr_fp16 cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_icd cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_intel_subgroups cl_intel_required_subgroup_size cl_intel_subgroups_short cl_khr_spir cl_intel_accelerator cl_intel_driver_diagnostics cl_khr_priority_hints cl_khr_throttle_hints cl_khr_create_command_queue cl_intel_subgroups_char cl_intel_subgroups_long cl_khr_il_program cl_intel_mem_force_host_memory cl_khr_fp64 cl_khr_subgroups cl_intel_spirv_device_side_avc_motion_estimation cl_intel_spirv_media_block_io cl_intel_spirv_subgroups cl_khr_spirv_no_integer_wrap_decoration cl_intel_unified_shared_memory_preview cl_khr_mipmap_image cl_khr_mipmap_image_writes cl_intel_planar_yuv cl_intel_packed_yuv cl_intel_motion_estimation cl_intel_device_side_avc_motion_estimation cl_intel_advanced_motion_estimation cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_image2d_from_buffer cl_khr_depth_images cl_intel_media_block_io cl_khr_3d_image_writes cl_intel_va_api_media_sharing
  Platform Host timer resolution                  1ns
  Platform Extensions function suffix            INTEL

  Platform Name                                  Intel(R) OpenCL HD Graphics
Number of devices                                1
  Device Name                                    Intel(R) Graphics Gen9 [0x9bca]
  Device Vendor                                  Intel(R) Corporation
  Device Vendor ID                                0x8086
  Device Version                                  OpenCL 3.0 NEO
  Driver Version                                  1.0.0
  Device OpenCL C Version                        OpenCL C 3.0
  Device Type                                    GPU
  Device Profile                                  FULL_PROFILE
  Device Available                                Yes
  Compiler Available                              Yes
  Linker Available                                Yes
  Max compute units                              24
  Max clock frequency                            1150MHz
  Device Partition                                (core)
    Max number of sub-devices                    0
    Supported partition types                    None
    Supported affinity domains                    (n/a)
  Max work item dimensions                        3
  Max work item sizes                            256x256x256
  Max work group size                            256
  Preferred work group size multiple              32
  Max sub-groups per work group                  32
  Sub-group sizes (Intel)                        8, 16, 32
  Preferred / native vector sizes               
    char                                                16 / 16     
    short                                                8 / 8     
    int                                                  4 / 4     
    long                                                1 / 1     
    half                                                8 / 8        (cl_khr_fp16)
    float                                                1 / 1     
    double                                              1 / 1        (cl_khr_fp64)
  Half-precision Floating-point support          (cl_khr_fp16)
    Denormals                                    Yes
    Infinity and NANs                            Yes
    Round to nearest                              Yes
    Round to zero                                Yes
    Round to infinity                            Yes
    IEEE754-2008 fused multiply-add              Yes
    Support is emulated in software              No
  Single-precision Floating-point support        (core)
    Denormals                                    Yes
    Infinity and NANs                            Yes
    Round to nearest                              Yes
    Round to zero                                Yes
    Round to infinity                            Yes
    IEEE754-2008 fused multiply-add              Yes
    Support is emulated in software              No
    Correctly-rounded divide and sqrt operations  Yes
  Double-precision Floating-point support        (cl_khr_fp64)
    Denormals                                    Yes
    Infinity and NANs                            Yes
    Round to nearest                              Yes
    Round to zero                                Yes
    Round to infinity                            Yes
    IEEE754-2008 fused multiply-add              Yes
    Support is emulated in software              No
  Address bits                                    64, Little-Endian
  Global memory size                              13174616064 (12.27GiB)
  Error Correction support                        No
  Max memory allocation                          4294959104 (4GiB)
  Unified memory for Host and Device              Yes
  Shared Virtual Memory (SVM) capabilities        (core)
    Coarse-grained buffer sharing                Yes
    Fine-grained buffer sharing                  No
    Fine-grained system sharing                  No
    Atomics                                      No
  Minimum alignment for any data type            128 bytes
  Alignment of base address                      1024 bits (128 bytes)
  Preferred alignment for atomics               
    SVM                                          64 bytes
    Global                                        64 bytes
    Local                                        64 bytes
  Max size for global variable                    65536 (64KiB)
  Preferred total size of global vars            4294959104 (4GiB)
  Global Memory cache type                        Read/Write
  Global Memory cache size                        524288 (512KiB)
  Global Memory cache line size                  64 bytes
  Image support                                  Yes
    Max number of samplers per kernel            16
    Max size for 1D images from buffer            268434944 pixels
    Max 1D or 2D image array size                2048 images
    Base address alignment for 2D image buffers  4 bytes
    Pitch alignment for 2D image buffers          4 pixels
    Max 2D image size                            16384x16384 pixels
    Max planar YUV image size                    16384x16352 pixels
    Max 3D image size                            16384x16384x2048 pixels
    Max number of read image args                128
    Max number of write image args                128
    Max number of read/write image args          128
  Max number of pipe args                        16
  Max active pipe reservations                    1
  Max pipe packet size                            1024
  Local memory type                              Local
  Local memory size                              65536 (64KiB)
  Max number of constant args                    8
  Max constant buffer size                        4294959104 (4GiB)
  Max size of kernel argument                    2048 (2KiB)
  Queue properties (on host)                     
    Out-of-order execution                        Yes
    Profiling                                    Yes
  Queue properties (on device)
    Out-of-order execution                        Yes
    Profiling                                    Yes
    Preferred size                                131072 (128KiB)
    Max size                                      67108864 (64MiB)
  Max queues on device                            1
  Max events on device                            1024
  Prefer user sync for interop                    Yes
  Profiling timer resolution                      83ns
  Execution capabilities
    Run OpenCL kernels                            Yes
    Run native kernels                            No
    Sub-group independent forward progress        Yes
    IL version                                    SPIR-V_1.2
    SPIR versions                                1.2
  printf() buffer size                            4194304 (4MiB)
  Built-in kernels                                block_motion_estimate_intel;block_advanced_motion_estimate_check_intel;block_advanced_motion_estimate_bidirectional_check_intel;
  Motion Estimation accelerator version (Intel)  2
    Device-side AVC Motion Estimation version    1
      Supports texture sampler use                Yes
      Supports preemption                        No
  Device Extensions                              cl_khr_byte_addressable_store cl_khr_fp16 cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_icd cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_intel_subgroups cl_intel_required_subgroup_size cl_intel_subgroups_short cl_khr_spir cl_intel_accelerator cl_intel_driver_diagnostics cl_khr_priority_hints cl_khr_throttle_hints cl_khr_create_command_queue cl_intel_subgroups_char cl_intel_subgroups_long cl_khr_il_program cl_intel_mem_force_host_memory cl_khr_fp64 cl_khr_subgroups cl_intel_spirv_device_side_avc_motion_estimation cl_intel_spirv_media_block_io cl_intel_spirv_subgroups cl_khr_spirv_no_integer_wrap_decoration cl_intel_unified_shared_memory_preview cl_khr_mipmap_image cl_khr_mipmap_image_writes cl_intel_planar_yuv cl_intel_packed_yuv cl_intel_motion_estimation cl_intel_device_side_avc_motion_estimation cl_intel_advanced_motion_estimation cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_image2d_from_buffer cl_khr_depth_images cl_intel_media_block_io cl_khr_3d_image_writes cl_intel_va_api_media_sharing

NULL platform behavior
  clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...)  Intel(R) OpenCL HD Graphics
  clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...)  Success [INTEL]
  clCreateContext(NULL, ...) [default]            Success [INTEL]
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT)  Success (1)
    Platform Name                                Intel(R) OpenCL HD Graphics
    Device Name                                  Intel(R) Graphics Gen9 [0x9bca]
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU)  Success (1)
    Platform Name                                Intel(R) OpenCL HD Graphics
    Device Name                                  Intel(R) Graphics Gen9 [0x9bca]
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_ACCELERATOR)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_CUSTOM)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_ALL)  Success (1)
    Platform Name                                Intel(R) OpenCL HD Graphics
    Device Name                                  Intel(R) Graphics Gen9 [0x9bca]

ICD loader properties
  ICD loader Name                                OpenCL ICD Loader
  ICD loader Vendor                              OCL Icd free software
  ICD loader Version                              2.2.13
  ICD loader Profile                              OpenCL 3.0
        NOTE:  your OpenCL library declares to support OpenCL 3.0,
                but it seems to support up to OpenCL 2.2 only.
        NOTE:  your OpenCL library only supports OpenCL 2.2,
                but some installed platforms support OpenCL 3.0.
                Programs using 3.0 features may crash
                or behave unexpectedly
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