1199008 – [abrt] darktable: fill_dev_image_t(): darktable killed by SIGSEGV

Bug 1199008 - [abrt] darktable: fill_dev_image_t(): darktable killed by SIGSEGV

Summary: [abrt] darktable: fill_dev_image_t(): darktable killed by SIGSEGV

Keywords:
Status:	CLOSED NEXTRELEASE
Alias:	None
Product:	Fedora
Classification:	Fedora
Component:	pocl
Sub Component:
Version:	22
Hardware:	x86_64
OS:	Unspecified
Priority:	unspecified
Severity:	unspecified
Target Milestone:	---
Assignee:	Fabian Deutsch
QA Contact:	Fedora Extras Quality Assurance
Docs Contact:
URL:	https://retrace.fedoraproject.org/faf...
Whiteboard:	abrt_hash:110cb7987002cf7ada7f6fface6...
Depends On:
Blocks:
TreeView+	depends on / blocked

Reported:	2015-03-05 10:11 UTC by Sylvain Réault
Modified:	2016-02-07 18:37 UTC (History)
CC List:	6 users (show)
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed:	2016-02-07 18:37:32 UTC
Type:	---
Embargoed:
Dependent Products:

Attachments	(Terms of Use)
File: backtrace (57.60 KB, text/plain) 2015-03-05 10:11 UTC, Sylvain Réault	no flags	Details
File: cgroup (190 bytes, text/plain) 2015-03-05 10:11 UTC, Sylvain Réault	no flags	Details
File: core_backtrace (60.96 KB, text/plain) 2015-03-05 10:12 UTC, Sylvain Réault	no flags	Details
File: dso_list (27.10 KB, text/plain) 2015-03-05 10:12 UTC, Sylvain Réault	no flags	Details
File: environ (1.62 KB, text/plain) 2015-03-05 10:12 UTC, Sylvain Réault	no flags	Details
File: limits (1.29 KB, text/plain) 2015-03-05 10:12 UTC, Sylvain Réault	no flags	Details
File: maps (134.27 KB, text/plain) 2015-03-05 10:12 UTC, Sylvain Réault	no flags	Details
File: open_fds (1.36 KB, text/plain) 2015-03-05 10:12 UTC, Sylvain Réault	no flags	Details
File: proc_pid_status (961 bytes, text/plain) 2015-03-05 10:12 UTC, Sylvain Réault	no flags	Details
File: var_log_messages (2.36 KB, text/plain) 2015-03-05 10:12 UTC, Sylvain Réault	no flags	Details
View All

Description Sylvain Réault 2015-03-05 10:11:55 UTC

Version-Release number of selected component:
darktable-1.6.3-1.fc22

Additional info:
reporter:       libreport-2.4.0
backtrace_rating: 4
cmdline:        /bin/darktable
crash_function: fill_dev_image_t
executable:     /usr/bin/darktable
kernel:         4.0.0-0.rc2.git0.1.fc22.x86_64
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 28 (2 frames)
 #0 fill_dev_image_t at /usr/lib64/libpocl.so.1.3.0
 #1 workgroup_thread at /usr/lib64/libpocl.so.1.3.0

Comment 1 Sylvain Réault 2015-03-05 10:11:58 UTC

Created attachment 998272 [details]
File: backtrace

Comment 2 Sylvain Réault 2015-03-05 10:11:59 UTC

Created attachment 998273 [details]
File: cgroup

Comment 3 Sylvain Réault 2015-03-05 10:12:01 UTC

Created attachment 998274 [details]
File: core_backtrace

Comment 4 Sylvain Réault 2015-03-05 10:12:03 UTC

Created attachment 998275 [details]
File: dso_list

Comment 5 Sylvain Réault 2015-03-05 10:12:04 UTC

Created attachment 998276 [details]
File: environ

Comment 6 Sylvain Réault 2015-03-05 10:12:05 UTC

Created attachment 998277 [details]
File: limits

Comment 7 Sylvain Réault 2015-03-05 10:12:09 UTC

Created attachment 998278 [details]
File: maps

Comment 8 Sylvain Réault 2015-03-05 10:12:10 UTC

Created attachment 998279 [details]
File: open_fds

Comment 9 Sylvain Réault 2015-03-05 10:12:11 UTC

Created attachment 998280 [details]
File: proc_pid_status

Comment 10 Sylvain Réault 2015-03-05 10:12:12 UTC

Created attachment 998281 [details]
File: var_log_messages

Comment 11 Germano Massullo 2015-03-05 10:54:52 UTC

Oops my error, I didn't want to close the bugreport

Comment 12 Germano Massullo 2015-03-05 12:38:04 UTC

Sylvain, a few questions:
- Did you force OpenCL usage in Darktable?
- Is Darktable is stable with OpenCL disabled?
Could you attach the output of darktable-cltest   ?

Comment 13 Sylvain Réault 2015-03-05 14:09:15 UTC

- No force, but just start darktable in command line (opencl enable by default?).

- darktable --disable-opencl it's ok

- darktable-cltest return :
$ darktable-cltest 
[defaults] found a 64-bit system with 16376356 kb ram and 8 cores (0 atom based)
[defaults] setting high quality defaults
[opencl_init] opencl related configuration options:
[opencl_init] 
[opencl_init] opencl: 1
[opencl_init] opencl_library: ''
[opencl_init] opencl_memory_requirement: 768
[opencl_init] opencl_memory_headroom: 300
[opencl_init] opencl_device_priority: '*/!0,*/*/*'
[opencl_init] opencl_size_roundup: 16
[opencl_init] opencl_async_pixelpipe: 0
[opencl_init] opencl_synch_cache: 0
[opencl_init] opencl_number_event_handles: 25
[opencl_init] opencl_micro_nap: 1000
[opencl_init] opencl_use_pinned_memory: 0
[opencl_init] opencl_use_cpu_devices: 0
[opencl_init] opencl_avoid_atomics: 0
[opencl_init] opencl_omit_whitebalance: 0
[opencl_init] 
[opencl_init] found opencl runtime library 'libOpenCL'
[opencl_init] opencl library 'libOpenCL' found on your system and loaded
[opencl_init] found 2 platforms
[opencl_init] found 2 devices
[opencl_init] discarding device 0 `AMD PITCAIRN' due to missing image support.
[opencl_init] device 1 `pthread-Intel(R) Core(TM) i7-4771 CPU @ 3.50GHz' supports image sizes of 8192 x 8192
[opencl_init] device 1 `pthread-Intel(R) Core(TM) i7-4771 CPU @ 3.50GHz' allows GPU memory allocations of up to 3998MB
[opencl_init] device 1: pthread-Intel(R) Core(TM) i7-4771 CPU @ 3.50GHz 
     GLOBAL_MEM_SIZE:          15993MB
     MAX_WORK_GROUP_SIZE:      1024
     MAX_WORK_ITEM_DIMENSIONS: 3
     MAX_WORK_ITEM_SIZES:      [ 1024 1024 1024 ]
     DRIVER_VERSION:           0.10
     DEVICE_VERSION:           OpenCL 1.2 pocl
[opencl_init] compiling program `demosaic_ppg.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/sylvain/.cache/darktable/cached_kernels_for_pthreadIntelRCoreTMi74771CPU350GHz/demosaic_ppg.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/demosaic_ppg.cl'
[opencl_build_program] successfully built program                               
[opencl_build_program] BUILD STATUS: 0                                          
BUILD LOG:                                                                      
                                                                                
[opencl_init] compiling program `atrous.cl' ..                                  
[opencl_load_program] loaded cached binary program from file `/home/sylvain/.cache/darktable/cached_kernels_for_pthreadIntelRCoreTMi74771CPU350GHz/atrous.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/atrous.cl'
[opencl_build_program] successfully built program                               
[opencl_build_program] BUILD STATUS: 0                                          
BUILD LOG:                                                                      
                                                                                
[opencl_init] compiling program `basic.cl' ..                                   
[opencl_load_program] loaded cached binary program from file `/home/sylvain/.cache/darktable/cached_kernels_for_pthreadIntelRCoreTMi74771CPU350GHz/basic.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/basic.cl'                                                                                          
[opencl_build_program] successfully built program                                                                                                                                       
[opencl_build_program] BUILD STATUS: 0                                                                                                                                                  
BUILD LOG:                                                                                                                                                                              
                                                                                                                                                                                        
[opencl_init] compiling program `blendop.cl' ..                                                                                                                                         
[opencl_load_program] loaded cached binary program from file `/home/sylvain/.cache/darktable/cached_kernels_for_pthreadIntelRCoreTMi74771CPU350GHz/blendop.cl.bin'                      
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/blendop.cl'                                                                                        
[opencl_build_program] successfully built program                                                                                                                                       
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] compiling program `highpass.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/sylvain/.cache/darktable/cached_kernels_for_pthreadIntelRCoreTMi74771CPU350GHz/highpass.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/highpass.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] compiling program `nlmeans.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/sylvain/.cache/darktable/cached_kernels_for_pthreadIntelRCoreTMi74771CPU350GHz/nlmeans.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/nlmeans.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] compiling program `gaussian.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/sylvain/.cache/darktable/cached_kernels_for_pthreadIntelRCoreTMi74771CPU350GHz/gaussian.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/gaussian.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] compiling program `sharpen.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/sylvain/.cache/darktable/cached_kernels_for_pthreadIntelRCoreTMi74771CPU350GHz/sharpen.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/sharpen.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] compiling program `extended.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/sylvain/.cache/darktable/cached_kernels_for_pthreadIntelRCoreTMi74771CPU350GHz/extended.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/extended.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] compiling program `soften.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/sylvain/.cache/darktable/cached_kernels_for_pthreadIntelRCoreTMi74771CPU350GHz/soften.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/soften.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] compiling program `bilateral.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/sylvain/.cache/darktable/cached_kernels_for_pthreadIntelRCoreTMi74771CPU350GHz/bilateral.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/bilateral.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] compiling program `denoiseprofile.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/sylvain/.cache/darktable/cached_kernels_for_pthreadIntelRCoreTMi74771CPU350GHz/denoiseprofile.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/denoiseprofile.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] compiling program `bloom.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/sylvain/.cache/darktable/cached_kernels_for_pthreadIntelRCoreTMi74771CPU350GHz/bloom.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/bloom.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] kernel loading time: 0.0643 
[opencl_init] OpenCL successfully initialized.
[opencl_init] here are the internal numbers and names of OpenCL devices available to darktable:
[opencl_init]           0       'pthread-Intel(R) Core(TM) i7-4771 CPU @ 3.50GHz'
[opencl_init] these are your device priorities:
[opencl_init]           image   preview export  thumbnail
[opencl_init]           0       -1      0       0
[opencl_init] FINALLY: opencl is AVAILABLE on this system.
[opencl_init] initial status of opencl enabled flag is ON.
[opencl_create_kernel] successfully loaded kernel `zero' (0) for device 0
[opencl_create_kernel] successfully loaded kernel `splat' (1) for device 0
[opencl_create_kernel] successfully loaded kernel `blur_line' (2) for device 0
[opencl_create_kernel] successfully loaded kernel `blur_line_z' (3) for device 0
[opencl_create_kernel] successfully loaded kernel `slice' (4) for device 0
[opencl_create_kernel] successfully loaded kernel `slice_to_output' (5) for device 0
[opencl_create_kernel] successfully loaded kernel `gaussian_column_1c' (6) for device 0
[opencl_create_kernel] successfully loaded kernel `gaussian_transpose_1c' (7) for device 0
[opencl_create_kernel] successfully loaded kernel `gaussian_column_4c' (8) for device 0
[opencl_create_kernel] successfully loaded kernel `gaussian_transpose_4c' (9) for device 0
[opencl_create_kernel] successfully loaded kernel `interpolation_resample' (10) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_mask_Lab' (11) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_mask_RAW' (12) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_mask_rgb' (13) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_Lab' (14) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_RAW' (15) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_rgb' (16) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_copy_alpha' (17) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_set_mask' (18) for device 0

(process:2411): Gtk-CRITICAL **: IA__gtk_rc_get_style_by_paths: assertion 'GTK_IS_SETTINGS (settings)' failed
[opencl_create_kernel] successfully loaded kernel `soften_overexposed' (19) for device 0
[opencl_create_kernel] successfully loaded kernel `soften_hblur' (20) for device 0
[opencl_create_kernel] successfully loaded kernel `soften_vblur' (21) for device 0
[opencl_create_kernel] successfully loaded kernel `soften_mix' (22) for device 0
[opencl_create_kernel] successfully loaded kernel `overexposed' (23) for device 0
[opencl_create_kernel] successfully loaded kernel `tonecurve' (24) for device 0
[opencl_create_kernel] successfully loaded kernel `lowpass_mix' (25) for device 0
[opencl_create_kernel] successfully loaded kernel `bloom_threshold' (26) for device 0
[opencl_create_kernel] successfully loaded kernel `bloom_hblur' (27) for device 0
[opencl_create_kernel] successfully loaded kernel `bloom_vblur' (28) for device 0
[opencl_create_kernel] successfully loaded kernel `bloom_mix' (29) for device 0
[opencl_create_kernel] successfully loaded kernel `relight' (30) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_precondition' (31) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_init' (32) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_dist' (33) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_horiz' (34) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_vert' (35) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_accu' (36) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_finish' (37) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_backtransform' (38) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_decompose' (39) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_synthesize' (40) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_reduce_first' (41) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_reduce_second' (42) for device 0
[opencl_create_kernel] successfully loaded kernel `vibrance' (43) for device 0
[opencl_create_kernel] successfully loaded kernel `colorize' (44) for device 0
[opencl_create_kernel] successfully loaded kernel `shadows_highlights_mix' (45) for device 0
[opencl_create_kernel] successfully loaded kernel `sharpen_hblur' (46) for device 0
[opencl_create_kernel] successfully loaded kernel `sharpen_vblur' (47) for device 0
[opencl_create_kernel] successfully loaded kernel `sharpen_mix' (48) for device 0
[opencl_create_kernel] successfully loaded kernel `nlmeans_init' (49) for device 0
[opencl_create_kernel] successfully loaded kernel `nlmeans_dist' (50) for device 0
[opencl_create_kernel] successfully loaded kernel `nlmeans_horiz' (51) for device 0
[opencl_create_kernel] successfully loaded kernel `nlmeans_vert' (52) for device 0
[opencl_create_kernel] successfully loaded kernel `nlmeans_accu' (53) for device 0
[opencl_create_kernel] successfully loaded kernel `nlmeans_finish' (54) for device 0
[opencl_create_kernel] successfully loaded kernel `colormapping_histogram' (55) for device 0
[opencl_create_kernel] successfully loaded kernel `colormapping_mapping' (56) for device 0
[opencl_create_kernel] successfully loaded kernel `flip' (57) for device 0
[opencl_create_kernel] successfully loaded kernel `colorcorrection' (58) for device 0
[opencl_create_kernel] successfully loaded kernel `lens_distort_bilinear' (59) for device 0
[opencl_create_kernel] successfully loaded kernel `lens_distort_bicubic' (60) for device 0
[opencl_create_kernel] successfully loaded kernel `lens_distort_lanczos2' (61) for device 0
[opencl_create_kernel] successfully loaded kernel `lens_distort_lanczos3' (62) for device 0
[opencl_create_kernel] successfully loaded kernel `lens_vignette' (63) for device 0
[opencl_create_kernel] successfully loaded kernel `eaw_decompose' (64) for device 0
[opencl_create_kernel] successfully loaded kernel `eaw_synthesize' (65) for device 0
[opencl_create_kernel] successfully loaded kernel `graduatedndp' (66) for device 0
[opencl_create_kernel] successfully loaded kernel `graduatedndm' (67) for device 0
[opencl_create_kernel] successfully loaded kernel `colorbalance' (68) for device 0
[opencl_create_kernel] successfully loaded kernel `pixelmax_first' (69) for device 0
[opencl_create_kernel] successfully loaded kernel `pixelmax_second' (70) for device 0
[opencl_create_kernel] successfully loaded kernel `global_tonemap_reinhard' (71) for device 0
[opencl_create_kernel] successfully loaded kernel `global_tonemap_drago' (72) for device 0
[opencl_create_kernel] successfully loaded kernel `global_tonemap_filmic' (73) for device 0
[opencl_create_kernel] successfully loaded kernel `profilegamma' (74) for device 0
[opencl_create_kernel] successfully loaded kernel `whitebalance_4f' (75) for device 0
[opencl_create_kernel] successfully loaded kernel `whitebalance_1f' (76) for device 0
[opencl_create_kernel] successfully loaded kernel `highlights_1f' (77) for device 0
[opencl_create_kernel] successfully loaded kernel `highlights_4f' (78) for device 0
[opencl_create_kernel] successfully loaded kernel `colorcontrast' (79) for device 0
[opencl_create_kernel] successfully loaded kernel `basecurve' (80) for device 0
[opencl_create_kernel] successfully loaded kernel `invert_1f' (81) for device 0
[opencl_create_kernel] successfully loaded kernel `invert_4f' (82) for device 0
[opencl_create_kernel] successfully loaded kernel `colisa' (83) for device 0
[opencl_create_kernel] successfully loaded kernel `highpass_invert' (84) for device 0
[opencl_create_kernel] successfully loaded kernel `highpass_hblur' (85) for device 0
[opencl_create_kernel] successfully loaded kernel `highpass_vblur' (86) for device 0
[opencl_create_kernel] successfully loaded kernel `highpass_mix' (87) for device 0
[opencl_create_kernel] successfully loaded kernel `velvia' (88) for device 0
[opencl_create_kernel] successfully loaded kernel `clip_and_zoom_demosaic_half_size' (89) for device 0
[opencl_create_kernel] successfully loaded kernel `ppg_demosaic_green' (90) for device 0
[opencl_create_kernel] successfully loaded kernel `green_equilibration' (91) for device 0
[opencl_create_kernel] successfully loaded kernel `pre_median' (92) for device 0
[opencl_create_kernel] successfully loaded kernel `ppg_demosaic_green_median' (93) for device 0
[opencl_create_kernel] successfully loaded kernel `ppg_demosaic_redblue' (94) for device 0
[opencl_create_kernel] successfully loaded kernel `clip_and_zoom' (95) for device 0
[opencl_create_kernel] successfully loaded kernel `border_interpolate' (96) for device 0
[opencl_create_kernel] successfully loaded kernel `color_smoothing' (97) for device 0
[opencl_create_kernel] successfully loaded kernel `clip_rotate_bilinear' (98) for device 0
[opencl_create_kernel] successfully loaded kernel `clip_rotate_bicubic' (99) for device 0
[opencl_create_kernel] successfully loaded kernel `clip_rotate_lanczos2' (100) for device 0
[opencl_create_kernel] successfully loaded kernel `clip_rotate_lanczos3' (101) for device 0
[opencl_create_kernel] successfully loaded kernel `colorout' (102) for device 0
[opencl_create_kernel] successfully loaded kernel `vignette' (103) for device 0
[opencl_create_kernel] successfully loaded kernel `colorzones' (104) for device 0
[opencl_create_kernel] successfully loaded kernel `levels' (105) for device 0
[opencl_create_kernel] successfully loaded kernel `lowlight' (106) for device 0
[opencl_create_kernel] successfully loaded kernel `monochrome_filter' (107) for device 0
[opencl_create_kernel] successfully loaded kernel `monochrome' (108) for device 0
[opencl_create_kernel] successfully loaded kernel `channelmixer' (109) for device 0
[opencl_create_kernel] successfully loaded kernel `splittoning' (110) for device 0
[opencl_create_kernel] successfully loaded kernel `borders_fill' (111) for device 0
[opencl_create_kernel] successfully loaded kernel `exposure' (112) for device 0
[opencl_create_kernel] successfully loaded kernel `colorin_unbound' (113) for device 0
[opencl_create_kernel] successfully loaded kernel `colorin_clipping' (114) for device 0
[opencl_create_kernel] successfully loaded kernel `zonesystem' (115) for device 0
[opencl_create_kernel] successfully loaded kernel `letsgofloat_1ui' (116) for device 0

Comment 14 Germano Massullo 2015-03-06 17:40:36 UTC

Assigning to pocl component.

pocl must report cpu's as CL_DEVICE_TYPE_CPU, not as something else.
(see https://bugzilla.redhat.com/show_bug.cgi?id=1199008#c13 )

https://github.com/darktable-org/darktable/blob/b8dd70c15f22467404aff355f8908df636b52bb5/src/common/opencl.c#L265

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