.
Thread 1 (LWP 6550):
#0  0x00007fc00dda2f77 in ?? ()
No symbol table info available.
#1  0x00007fc00dda65e8 in ?? ()
No symbol table info available.
#2  0x0000000000000020 in ?? ()
No symbol table info available.
#3  0x0000000000000000 in ?? ()
No symbol table info available.