Segfault happened at: 0x7fcf5af6794b:	callq  *0x38(%rax)
PC (0x7fcf5af6794b) ok
source "*0x38(%rax)" ok
destination "(%rsp)" (0x7fff22f90e10) ok
SP (0x7fff22f90e10) ok
Reason could not be automatically determined.