[  300.648877][ T4049] iperf3[4049]: segfault at 0 ip 00007f7ad7140077 sp 00007ffe605c0890 error 6 in libc.so.6[100077,7f7ad7068000+175000] likely on CPU 3 (core 3, socket 0)
[  300.649671][ T4049] Code: 83 e8 01 48 29 ca 49 83 db 00 4d 01 c4 73 e4 4d 89 d6 49 29 d6 4d 19 dc 85 ed 75 27 48 85 c0 0f 85 7a 01 00 00 48 c7 44 24 58 <00> 00 00 00 48 83 ef 40 40 88 74 24 30 41 89 f1 e9 0c ff ff ff 0f
[  300.651566][ T4047] iperf3[4047]: segfault at 19016 ip 0000000000019016 sp 00007fff167cb550 error 14 likely on CPU 3 (core 3, socket 0)
[  300.652121][ T4047] Code: Unable to access opcode bytes at 0x18fec.
[  301.262756][ T4224] ip (4224) used greatest stack depth: 23552 bytes left