Ansis Atteka [mailto:aatteka@xxxxxxxxxx] > Sent: Tuesday, January 03, 2017 8:41 AM [...] > Hayes, in your iperf reproduction environment did you > 1) connect sender and receiver directly with an Ethernet cable? > 2) use iperf's TCP mode instead of UDP mode, because I believe that > with UDP mode packets are more likely to be sparsely distributed? > Also, this bug is way easier to reproduce when IP fragmentation kicks > in because IP fragments are typically sent out very close to each > other. > 3) were you plugging your USB Ethernet dongle in USB 3.0 port or > whatever Mark was using? It seems that each USB mode has different > coalesce parameters and yours might have work "out of box"? Yes. I connect them directly and use iperf's TCP mode. However, I test the RTL8152 which only support USB 2.0. Therefore, I don't think it occurs with different coalesce parameters. > While I would not call this a proper fix, because it simply reduces > coalescing timeouts by order of 10X and most likely does not eliminate > security aspects of the bug, it at least made my system functionally > stable and I don't see either of those two bugs in my setup anymore: Do you try commit a59e6d815226 ("r8152: correct the rx early size"), or you have used it? Best Regards, Hayes ��.n��������+%������w��{.n�����{���)�� jg��� �����ݢj����G���� ���j:+v���w�m������w�������h�����٥
