[  129.472903] iperf3[17697]: segfault at a2f33558 ip 00000000a2f33558 sp 00007ffc66133070 error 14 likely on CPU 1 (core 1, socket 0)
[  129.473018] Code: Unable to access opcode bytes at 0xa2f3352e.
[  129.473327] iperf3[17668]: segfault at 0 ip 0000000000000000 sp 00007ffee4b035f0 error 14 likely on CPU 1 (core 1, socket 0)
[  129.473419] Code: Unable to access opcode bytes at 0xffffffffffffffd6.
[  129.473448] iperf3[17679]: segfault at 0 ip 0000000000000000 sp 00007fff2d717760 error 14 likely on CPU 3 (core 3, socket 0)
[  129.473571] Code: Unable to access opcode bytes at 0xffffffffffffffd6.