Hey Stefan, Just wanted to update you that I've installed the Mainline 4.0.9 kernel (4.0.9-040009-generic #201507212131) on all affected machines, finishing about an hour ago, from https://wiki.ubuntu.com/Kernel/MainlineBuilds. I've still had two crashes in the hour since the downgrade.
I don't know enough about kernel code to provide feedback on the detail above, but thanks for looking into this! I doubt that this could be related, but maybe it will help... We also appear to have one of our C utilities (developed in-house) crashing a few times a day: xxx.log:[ 4740.992084] traps: checkport[6624] general protection ip:4c3d07 sp:7f8441ce8e20 error:0 in checkport[400000+ff000] xxx.log:[60087.824087] traps: checkport[2203] general protection ip:4c3d07 sp:7fcc7df61e20 error:0 in checkport[400000+ff000] xxx.log:[ 5375.784101] traps: checkport[10795] general protection ip:4c3d07 sp:7f96ebcbde20 error:0 in checkport[400000+ff000] in addition to numerous segfaults: xxx.log:[ 1354.456792] checkport[1644]: segfault at a8 ip 000000000049be3a sp 00007fea90080da0 error 4 in checkport[400000+ff000] xxx.log:[ 1393.894368] checkport[2754]: segfault at a8 ip 000000000049be3a sp 00007f082e3c6da0 error 4 in checkport[400000+ff000] xxx.log:[ 2474.260293] checkport[24996]: segfault at a8 ip 000000000049be3a sp 00007f569f6dcda0 error 4 in checkport[400000+ff000] xxx.log:[ 4170.613174] checkport[23278]: segfault at a8 ip 000000000049be3a sp 00007fcf9b580da0 error 4 in checkport[400000+ff000] The developers are looking into this on our end, but, we still had the same version of the tool and the same number of segfaults on our 3.19 kernel on 15.04 and it never triggered a kernel crash. Is it possible that invalid memory access in this binary could be triggering a kernel GPF? Or would that memory be protected? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1534345 Title: Ubuntu 15.10 Crashing Frequently on EC2 Instances w/ Enhanced Networking To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1534345/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
