Color management: using fallback mode for management
Read prefs: /home/roman/.config/blender/2.79/config/userpref.blend
Writing: /tmp/blender.crash.txt
Segmentation fault

# Blender 2.79 (sub 0), Commit date: 1970-01-01 00:00, Hash unknown
bpy.context.scene.render.engine = 'CYCLES'  # Property

# backtrace
blender(BLI_system_backtrace+0x30) [0x56172b713880]
blender(+0xaf363e) [0x56172ad6d63e]
/lib64/libc.so.6(+0x349d0) [0x7fd5058ec9d0]

dev-libs/amdgpu-pro-opencl
      Latest version available: 17.50.511655

roman@gentoo ~ $ eselect opencl list
Available OpenCL implementations:
  [1]   mesa
  [2]   ocl-icd *

  Platform Name                                   AMD Accelerated Parallel Processing
Number of devices                                 1
  Device Name                                     Hawaii
  Device Vendor                                   Advanced Micro Devices, Inc.
  Device Vendor ID                                0x1002
  Device Version                                  OpenCL 1.2 AMD-APP (2527.3)
  Driver Version                                  2527.3
  Device OpenCL C Version                         OpenCL C 1.2
  Device Type                                     GPU
  Device Available                                Yes
  Device Profile                                  FULL_PROFILE
  Device Board Name (AMD)                         AMD Radeon R9 200 Series

01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Hawaii XT / Grenada XT [Radeon R9 290X/390X] (prog-if 00 [VGA controller])
        Subsystem: Gigabyte Technology Co., Ltd R9 290X WindForce 3X
        Flags: bus master, fast devsel, latency 0, IRQ 60, NUMA node 0
        Memory at c0000000 (64-bit, prefetchable) [size=256M]
        Memory at d0000000 (64-bit, prefetchable) [size=8M]
        I/O ports at e000 [size=256]
        Memory at fea00000 (32-bit, non-prefetchable) [size=256K]
        Expansion ROM at 000c0000 [disabled] [size=128K]
        Capabilities: [48] Vendor Specific Information: Len=08 <?>
        Capabilities: [50] Power Management version 3
        Capabilities: [58] Express Legacy Endpoint, MSI 00
        Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
        Capabilities: [150] Advanced Error Reporting
        Capabilities: [200] #15
        Capabilities: [270] #19
        Capabilities: [2b0] Address Translation Service (ATS)
        Capabilities: [2c0] Page Request Interface (PRI)
        Capabilities: [2d0] Process Address Space ID (PASID)
        Kernel driver in use: amdgpu
        Kernel modules: amdgpu