[  475.190181][ T4047] iperf3[4047]: segfault at 0 ip 0000000000000000 sp 00007ffc71c44580 error 14 likely on CPU 1 (core 1, socket 0)
[  475.190909][ T4047] Code: Unable to access opcode bytes at 0xffffffffffffffd6.
[  475.567851][ T4221] ip (4221) used greatest stack depth: 24144 bytes left