Segfault happened at: 0x7f55a1d07975 <_ZN15QSocketNotifier10setEnabledEb+21>:	mov    0x40(%rdx),%rdx
PC (0x7f55a1d07975) ok
source "0x40(%rdx)" (0x00000040) not located in a known VMA region (needed readable region)!
destination "%rdx" ok