The Cosmic test kernel built without issue and only required commits 37c2578c0c40 and e04e7a7bbd4b.
It is available from: http://kernel.ubuntu.com/~jsalisbury/lp1807757/cosmic/ -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-azure in Ubuntu. https://bugs.launchpad.net/bugs/1807757 Title: Drivers: hv: vmbus: Offload the handling of channels to two workqueues Status in linux package in Ubuntu: Fix Committed Status in linux-azure package in Ubuntu: Triaged Status in linux source package in Xenial: Triaged Status in linux source package in Bionic: Triaged Status in linux source package in Cosmic: In Progress Status in linux source package in Disco: Fix Committed Bug description: == SRU Justification == Microsoft has identified a multiple-NIC-deadlock issue on Hyper-V VMs. This bug is fixed by the following commit, which is in mainline as of v4.20-rc6: 37c2578c0c40 ("Drivers: hv: vmbus: Offload the handling of channels to two workqueues") A second commit is also needed to prevent a deadlock with single NIC VMs. This commit is in mainline as of 4.19-rc3: e04e7a7bbd4b ("hv_netvsc: Fix a deadlock by getting rtnl lock earlier in netvsc_probe()") The Disco development release has been rebased to upstream 4.19, and it already has commit eceb0596548. Disco only needs 37c2578c0c40. Cosmic does not require any dependent commits, just the two above(37c2578c0c40, e04e7a7bbd4b). linux-azure and Bionic(4.15+ kernels) require the following three dependent commits: 4.19-rc1 - 50229128727f ("Drivers: hv: vmbus: Fix the offer_in_progress in vmbus_process_offer()") 4.19-rc4 - 6712cc9c2211 ("vmbus: don't return values for uninitalized channels") 4.20-rc5 - eceb05965489 ("Drivers: hv: vmbus: check the creation_status in vmbus_establish_gpadl()") Xenial(4.14 and older kernels) require the following five dependent commits: 4.15-rc1 - c2e5df616e1a ("vmbus: add per-channel sysfs info") 4.15-rc6 - 869b5567e12f ("vmbus: unregister device_obj->channels_kset") 4.19-rc1 - 50229128727f ("Drivers: hv: vmbus: Fix the offer_in_progress in vmbus_process_offer()") 4.19-rc4 - 6712cc9c2211 ("vmbus: don't return values for uninitalized channels") 4.20-rc5 - eceb05965489 ("Drivers: hv: vmbus: check the creation_status in vmbus_establish_gpadl()") == Fixes == ("Dependent commits mentioned above, based on Ubuntu release") e04e7a7bbd4b ("hv_netvsc: Fix a deadlock by getting rtnl lock earlier in netvsc_probe()") 37c2578c0c40 ("Drivers: hv: vmbus: Offload the handling of channels to two workqueues") == Regression Potential == Low. Limited to hyperv. == Test Case == To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1807757/+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
