.
Thread 4 (LWP 1712):
#0  0x00007fa4d65263dd in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 3 (LWP 1472):
#0  0x00007fa4d65263dd in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (LWP 1464):
#0  0x00007fa4d65263dd in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (LWP 1344):
#0  0x00007fa4d7abc719 in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.