Package: iperf Version: 2.0.10+dfsg1-1 iperf segfaults with long runs on 40Gb/s NICs. iperf -c 192.168.121.2 -P10 -w 130k -t 3600 ------------------------------------------------------------ Client connecting to 192.168.121.2, TCP port 5001 TCP window size: 254 KByte (WARNING: requested 127 KByte) ------------------------------------------------------------ [ 10] local 192.168.121.3 port 40756 connected with 192.168.121.2 port 5001 [ 12] local 192.168.121.3 port 40760 connected with 192.168.121.2 port 5001 [ 11] local 192.168.121.3 port 40758 connected with 192.168.121.2 port 5001 [ 8] local 192.168.121.3 port 40754 connected with 192.168.121.2 port 5001 [ 9] local 192.168.121.3 port 40752 connected with 192.168.121.2 port 5001 [ 7] local 192.168.121.3 port 40750 connected with 192.168.121.2 port 5001 [ 6] local 192.168.121.3 port 40746 connected with 192.168.121.2 port 5001 [ 5] local 192.168.121.3 port 40748 connected with 192.168.121.2 port 5001 [ 3] local 192.168.121.3 port 40744 connected with 192.168.121.2 port 5001 [ 4] local 192.168.121.3 port 40742 connected with 192.168.121.2 port 5001 Segmentation fault (core dumped) function byte_snprintf() when calculating SUM, where SUM is in terabyte, we go past the kLabel_Byte/kLabel_bit array limit (by increment of conv past kConv_Giga) and this causes iperf to segfault because suffix is pointing past the array bounds. A fix for this issue is available in: https://sourceforge.net/p/iperf2/code/ci/fce3254827eb05fee56aa6a2e9f0d69cbe599a69/ -- ============================ Manoj Iyer Ubuntu/Canonical ARM Servers - Cloud ============================
