------- Comment From gpicc...@br.ibm.com 2016-10-20 09:39 EDT------- Working fine with proposed kernel 4.4.0-44-generic.
Notice that proposed kernel 4.4.0-45-generic seems to *not include* the fix, since I tested in this version and was able to reproduce the issue. Thanks, Guilherme ** Tags removed: verification-needed-xenial ** Tags added: verification-done-xenial -- 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/1626782 Title: i40e/setting some ethtool features and remove module right after (modprobe -r) lead to crash in systems with more than 127 CPUs Status in linux package in Ubuntu: Fix Released Status in linux source package in Xenial: Fix Committed Status in linux source package in Yakkety: Fix Released Bug description: On systems with more than 127 online CPUs, all interrupt vectors on i40e driver are allocated to tx/rx queues and some features, like Flow Director SideBand (FD_SB), are kept disabled. Then, changing some features like TSO/GSO via ethtool will forcibly enable FD_SB without any vectors available, and this way we get errors. If we unload the i40e (using "modprobe -r") after these errors, we end up crashing the system. There is an upstream patch that address exactly this issue. We want to request Canonical to merge it on Ubuntu 16.04.1 kernel if possible. The patch is: a70e407f6d ("i40e: Fix errors resulted while turning off TSO") [https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a70e407f6d0b0f63b17d468f78b666d33f264ba1] Thanks in advance, Guilherme To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1626782/+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
