Created attachment 793858 [details]
backtrace of all threads from core dump

## Observation

I am running midori on an "openQA dashboard monitor" and I see it crashing
multiple times, e.g. once every other day.

```
# coredumpctl  | grep midori
Thu 2019-01-03 13:52:39 CET    2220  1001   100  11 missing   /usr/bin/midori
Sat 2019-01-05 09:58:23 CET    2218  1001   100  11 present   /usr/bin/midori
Tue 2019-01-08 09:52:33 CET    2219  1001   100  11 present   /usr/bin/midori
```

backtrace of all threads attached, coredump is available on request.