SIGNAL 11 SIGSEGV crash Android
Call webview.clearCache(); and webView2.destroyDrawingCache();
That should solve the problem.
I have faced the same problem and i had a jni. this fatal exception creates randomly and as i was using it to play audio it crashed about 2min or 6 min or else. After a lots of research i have found that the problem was i had made a native function call from two different thread and when it occurs at the same time it failed.
Another if you have any jni call from android make sure that you have not passed any null as an argument.