The test kernel in comment #13 has a revert of all hyper-v patches due to bug 1492146 .
I also built a test kernel with the current lts-backport-utopic branch of Trusty with a cherry pick of the following commit: 6f19e12 igb: flush when in xmit_more mode and under descriptor pressure The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1491957 If possible, can folks also test this kernel? Thanks in advance -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-lts-utopic in Ubuntu. https://bugs.launchpad.net/bugs/1491957 Title: 3.16.0.48 kernel in hyper-v cause hv_netvsc problem Status in linux-lts-utopic package in Ubuntu: In Progress Status in linux-lts-utopic source package in Trusty: In Progress Bug description: I have an Ubuntu 14.04 LTS in Hyper-V. It works well. Today I apt upgrade the kernel from 3.16.0.46 to 3.16.0.48 and after reboot, I have network connection problems, and have a lot of error message on screen like the above ones. Sep 3 18:48:07 RailGun kernel: [ 71.437967] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 2068)...retrying 4 Sep 3 18:48:07 RailGun kernel: [ 71.438276] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 2068)...give up retrying Sep 3 18:48:07 RailGun kernel: [ 71.438596] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 2069)...retrying 1 Sep 3 18:48:07 RailGun kernel: [ 71.439016] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 2069)...retrying 2 Sep 3 18:48:07 RailGun kernel: [ 71.439434] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 2069)...retrying 3 Sep 3 18:48:07 RailGun kernel: [ 71.439847] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 2069)...retrying 4 Sep 3 18:48:07 RailGun kernel: [ 71.440155] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 2069)...give up retrying Sep 3 18:48:07 RailGun kernel: [ 71.465593] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206a)...retrying 1 Sep 3 18:48:07 RailGun kernel: [ 71.466165] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206a)...retrying 2 Sep 3 18:48:07 RailGun kernel: [ 71.466827] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206a)...retrying 3 Sep 3 18:48:07 RailGun kernel: [ 71.467508] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206a)...retrying 4 Sep 3 18:48:07 RailGun kernel: [ 71.468056] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206a)...give up retrying Sep 3 18:48:07 RailGun kernel: [ 71.474507] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206b)...retrying 1 Sep 3 18:48:07 RailGun kernel: [ 71.474998] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206b)...retrying 2 Sep 3 18:48:07 RailGun kernel: [ 71.475419] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206b)...retrying 3 Sep 3 18:48:07 RailGun kernel: [ 71.475833] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206b)...retrying 4 Sep 3 18:48:07 RailGun kernel: [ 71.476145] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206b)...give up retrying Sep 3 18:48:07 RailGun kernel: [ 71.483356] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206c)...retrying 1 Sep 3 18:48:07 RailGun kernel: [ 71.483823] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206c)...retrying 2 Sep 3 18:48:07 RailGun kernel: [ 71.484266] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206c)...retrying 3 Sep 3 18:48:07 RailGun kernel: [ 71.484683] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206c)...retrying 4 Sep 3 18:48:07 RailGun kernel: [ 71.484993] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206c)...give up retrying Sep 3 18:48:07 RailGun kernel: [ 71.491738] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206d)...retrying 1 Sep 3 18:48:07 RailGun kernel: [ 71.492223] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206d)...retrying 2 Sep 3 18:48:07 RailGun kernel: [ 71.492645] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206d)...retrying 3 Sep 3 18:48:07 RailGun kernel: [ 71.493060] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206d)...retrying 4 Sep 3 18:48:07 RailGun kernel: [ 71.493369] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206d)...give up retrying Sep 3 18:48:07 RailGun kernel: [ 71.493689] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206e)...retrying 1 Sep 3 18:48:07 RailGun kernel: [ 71.494109] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206e)...retrying 2 Sep 3 18:48:07 RailGun kernel: [ 71.494527] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206e)...retrying 3 Sep 3 18:48:07 RailGun kernel: [ 71.494941] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206e)...retrying 4 Sep 3 18:48:07 RailGun kernel: [ 71.495249] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206e)...give up retrying Sep 3 18:48:07 RailGun kernel: [ 71.509010] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206f)...retrying 1 Sep 3 18:48:07 RailGun kernel: [ 71.509467] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206f)...retrying 2 Sep 3 18:48:07 RailGun kernel: [ 71.509892] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206f)...retrying 3 Sep 3 18:48:07 RailGun kernel: [ 71.510308] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206f)...retrying 4 Sep 3 18:48:07 RailGun kernel: [ 71.510617] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 206f)...give up retrying Sep 3 18:48:07 RailGun kernel: [ 71.510938] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 2070)...retrying 1 Sep 3 18:48:07 RailGun kernel: [ 71.511358] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 2070)...retrying 2 Sep 3 18:48:07 RailGun kernel: [ 71.511828] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 2070)...retrying 3 Sep 3 18:48:07 RailGun kernel: [ 71.512245] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 2070)...retrying 4 Sep 3 18:48:07 RailGun kernel: [ 71.512669] hv_netvsc vmbus_0_16 eth0: unable to send receive completion pkt (tid 2070)...give up retrying To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-lts-utopic/+bug/1491957/+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