> To me it looks like this issue isn't completely solved since I'm running a > more > recent kernel than the "fix" was commited to.
There is one additional upstream commit required to fully fix this, please see bug 1713553. -- 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/1700834 Title: Intel i40e PF reset under load Status in linux package in Ubuntu: Confirmed Status in linux source package in Xenial: Fix Released Bug description: SRU Justification: Impact: Using an Intel i40e network device, under heavy traffic load with TSO enabled, the device will spontaneously reset itself and issue errors similar to the following: Jun 14 14:09:51 hostname kernel: [4253913.851053] i40e 0000:05:00.1: TX driver issue detected, PF reset issued Jun 14 14:09:53 hostname kernel: [4253915.476283] i40e 0000:05:00.1: TX driver issue detected, PF reset issued Jun 14 14:09:54 hostname kernel: [4253917.411264] i40e 0000:05:00.1: TX driver issue detected, PF reset issued This causes a full reset of the PF, which causes an interruption in traffic flow. In this case, these errors arise from a bug in the i40e device driver introduced by commit: commit 584a837e26408c66e87df87a022faa6a54c2b020 Author: Alexander Duyck <adu...@mirantis.com> Date: Wed Feb 17 11:02:50 2016 -0800 i40e/i40evf: Rewrite logic for 8 descriptor per packet check This patch was added to the Xenial kernel beginning with version 4.4.0-8.23. This bug does not manifest on any other Ubuntu kernel series. Fix: This error is resolved upstream by: commit 3f3f7cb875c0f621485644d4fd7453b0d37f00e4 Author: Alexander Duyck <adu...@mirantis.com> Date: Wed Mar 30 16:15:37 2016 -0700 i40e/i40evf: Limit TSO to 7 descriptors for payload instead of 8 per packet This fix was never backported into the Xenial 4.4 kernel series. Testcase: In this case, the issue occurs at a customer site using i40e based Intel network cards with SR-IOV enabled. Under heavy load, the card will reset itself as described. The customer has tested the 3f3f7cb875c patch in their environment and confirmed that it resolves the issue. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1700834/+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
