GPU remapping started crashing, but worked fine before

GPU remapping started crashing for no particular reason. See the log below:

============================================
Stitching panorama...
============================================

Platform: Linux 4.4.0-64-generic x86_64
Version: 2016.2.0.be8da0221960
Working directory: /home/alex/Pictures/Kukul Yalynka
Output prefix: _DSC0911 - _DSC0914

Blender: enblend 4.2

Number of active images: 4
Output exposure value: 9,6
Canvas size: 8463x9211
ROI: (1879, 2231) - (6488, 7699)
FOV: 132x141
Projection: Stereographic(4)
Using GPU for remapping: true

Panorama Outputs:
* Exposure corrected, low dynamic range

First input image
Number: 0
Filename: /home/alex/Pictures/Kukul Yalynka/_DSC0911.tif
Size: 5470x3656
Projection: Normal (rectilinear)
Response type: custom (EMoR)
HFOV: 80
Exposure value: 9,6

Remapping LDR images...
nona: using graphics card: X.Org Gallium 0.4 on AMD RV710 (DRM 2.43.0 / 4.4.0-64-generic, LLVM 3.8.0)
Multiple images output
loading _DSC0911.tif
remapping _DSC0911.tif
saving _DSC0911 - _DSC09140000.tif
loading _DSC0912.tif
remapping _DSC0912.tif
saving _DSC0911 - _DSC09140001.tif
loading _DSC0913.tif
remapping _DSC0913.tif

and then crashes

Since there is no error code I cannot figure out the reason.
Where do i have to look for solution?