.
Thread 5 (LWP 1273):
#0  0x00007f9c41bfa83d in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007f9c4297e33c in ?? ()
No symbol table info available.
#2  0x0000000000000020 in ?? ()
No symbol table info available.
#3  0x00000001007615a0 in ?? ()
No symbol table info available.
#4  0xffffffff7fffffff in ?? ()
No symbol table info available.
#5  0x604f99f529837a00 in ?? ()
No symbol table info available.
#6  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 4 (LWP 1275):
#0  0x00007f9c41bfa83d in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007f9c4297e33c in ?? ()
No symbol table info available.
#2  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 3 (LWP 1272):
#0  0x00007f9c41bfa83d in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007f9c4297e33c in ?? ()
No symbol table info available.
#2  0x00007fff9abc439f in ?? ()
No symbol table info available.
#3  0x0000000100749000 in ?? ()
No symbol table info available.
#4  0x000000647fffffff in ?? ()
No symbol table info available.
#5  0x604f99f529837a00 in ?? ()
No symbol table info available.
#6  0x00007fff9abc439f in ?? ()
No symbol table info available.
#7  0x0000000000753be0 in ?? ()
No symbol table info available.
#8  0x0000000000000001 in ?? ()
No symbol table info available.
#9  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (LWP 1345):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
No locals.
#1  0x00007f9c429c2d0a in ?? ()
No symbol table info available.
#2  0x0000000000000076 in ?? ()
No symbol table info available.
#3  0x0000000028204f33 in ?? ()
No symbol table info available.
#4  0x000000000000000e in ?? ()
No symbol table info available.
#5  0x000000003b9ac1ed in ?? ()
No symbol table info available.
#6  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (LWP 1262):
#0  0x00007f9c4299bb3c in ?? ()
No symbol table info available.
#1  0x0000000000720670 in ?? ()
No symbol table info available.
#2  0x0000000000932910 in ?? ()
No symbol table info available.
#3  0x0000000000733f00 in ?? ()
No symbol table info available.
#4  0x0000000000932910 in ?? ()
No symbol table info available.
#5  0x00007f9c4421a820 in ?? ()
No symbol table info available.
#6  0x00007f9c4421a852 in ?? ()
No symbol table info available.
#7  0x000000000080b4c0 in ?? ()
No symbol table info available.
#8  0x0000000000000000 in ?? ()
No symbol table info available.