[opencontrail-dev] Kernel panic when doing `iperf -M 90`

Rajagopalan Sivaramakrishnan raja at juniper.net
Mon Dec 9 17:24:54 EST 2013


Hi Srini,
    Thank you for reporting the issue. We are able to reproduce it and know what the problem is. We will commit a fix shortly and will let you know once that is done.

Thanks,

Raja

From: Srini Seetharaman <srini.seetharaman at gmail.com<mailto:srini.seetharaman at gmail.com>>
Date: Friday, December 6, 2013 10:35 PM
To: "dev at lists.opencontrail.org<mailto:dev at lists.opencontrail.org>" <dev at lists.opencontrail.org<mailto:dev at lists.opencontrail.org>>
Subject: [opencontrail-dev] Kernel panic when doing `iperf -M 90`

Hi, we saw the attached kernel panic message on the screen when we ran `iperf -M 90` between two VMs on different hosts. Please let us know what log you need to help debug this.

Our setup is pretty simple. We have three servers running devstack with 1 of them being the contoller, and the other two being compute nodes. There's only 1 VM setup on each compute node, and we are doing TCP iperf. The MTU is 9000. iperf -M 1480 works fine. But, 90 bytes leads to kernel panic repeatedly.


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