.
Thread 4 (LWP 3099):
#0  0x00007fce4fe593cd in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 3 (LWP 2989):
#0  0x00007fce4fe593cd in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (LWP 2988):
#0  0x00007fce4fe593cd in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (LWP 2987):
#0  0x00007fce506521b1 in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.