.
Thread 5 (LWP 6461):
#0  0x00007f6af63753cd in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 4 (LWP 6466):
#0  0x00007f6af6076ca4 in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 3 (LWP 6460):
#0  0x00007f6af63753cd in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (LWP 6455):
#0  0x00007f6af63753cd in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (LWP 6454):
#0  0x00007f6af0bac25b in ?? ()
No symbol table info available.
#1  0x00000000014b6cd0 in ?? ()
No symbol table info available.
#2  0x00000000027ccd50 in ?? ()
No symbol table info available.
#3  0x00000000014b6cd0 in ?? ()
No symbol table info available.
#4  0x00000000027ccd50 in ?? ()
No symbol table info available.
#5  0x00000000013dcf48 in ?? ()
No symbol table info available.
#6  0x00000000014b6cd0 in ?? ()
No symbol table info available.
#7  0x00000000027ccd50 in ?? ()
No symbol table info available.
#8  0x00007f6ae9976147 in ?? ()
No symbol table info available.
#9  0x0000000000000000 in ?? ()
No symbol table info available.