Finally I figured out one approach to reproduce it quickly, see the attachment log.
** Attachment added: "crash log in trusty" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1425576/+attachment/4416913/+files/dmesg-trusty.log -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1425576 Title: Occasional crash in APM xgene enet driver on kernels prior to v3.19 Status in linux package in Ubuntu: Triaged Status in linux source package in Trusty: In Progress Status in linux source package in Utopic: In Progress Bug description: [Impact] System panics every few hours under constant network load [Test Case] On the X-Gene system, start an iperf server: $ iperf -s Connect to it from another system (1Gbps is sufficient) $ iperf -t 100000 -c <xgene host> On failure, you'll get a panic within several hours. [Regression Risk] The proposed patch only touches the impacted driver. It is adding a memory barrier - albeit a lightweight one - so there is the risk of a performance degradation. Indeed, when measured using a 60s iperf run, I do see a performance drop, but by < 0.5%. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1425576/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
