Public bug reported: BugLink: https://bugs.launchpad.net/bugs/2127705
[Impact] A race condition in the hv_netvsc module can lead to a lockup where the RX queue of the network device becomes stuck, degrading the performance for users of the Azure kernel. [Fix] The following fix was introduced in 6.17: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9448ccd85336 Backport it to the P/N/J:azure trees (Questing already has it) in order to fix the issue for users of the linux-azure kernel. [Test plan] Build tested only; Microsoft will validate the bug fix. [Where problems could occur] Issues with this patch could cause hangs, lockups or generally some kind of network performance degradation for virtual machines running on top of Hyper-V. [Other info] SF #00418032 ** Affects: linux-azure (Ubuntu) Importance: High Assignee: Vinicius Peixoto (vpeixoto) Status: In Progress ** Affects: linux-azure (Ubuntu Jammy) Importance: High Assignee: Vinicius Peixoto (vpeixoto) Status: In Progress ** Affects: linux-azure (Ubuntu Noble) Importance: High Assignee: Vinicius Peixoto (vpeixoto) Status: In Progress ** Affects: linux-azure (Ubuntu Plucky) Importance: High Assignee: Vinicius Peixoto (vpeixoto) Status: In Progress ** Also affects: linux-azure (Ubuntu Jammy) Importance: Undecided Status: New ** Also affects: linux-azure (Ubuntu Noble) Importance: Undecided Status: New ** Also affects: linux-azure (Ubuntu Plucky) Importance: Undecided Status: New ** Changed in: linux-azure (Ubuntu) Status: New => In Progress ** Changed in: linux-azure (Ubuntu Jammy) Status: New => In Progress ** Changed in: linux-azure (Ubuntu Noble) Status: New => In Progress ** Changed in: linux-azure (Ubuntu Plucky) Status: New => In Progress ** Changed in: linux-azure (Ubuntu) Importance: Undecided => High ** Changed in: linux-azure (Ubuntu Noble) Importance: Undecided => High ** Changed in: linux-azure (Ubuntu Jammy) Importance: Undecided => High ** Changed in: linux-azure (Ubuntu Plucky) Importance: Undecided => High ** Changed in: linux-azure (Ubuntu) Assignee: (unassigned) => Vinicius Peixoto (vpeixoto) ** Changed in: linux-azure (Ubuntu Jammy) Assignee: (unassigned) => Vinicius Peixoto (vpeixoto) ** Changed in: linux-azure (Ubuntu Noble) Assignee: (unassigned) => Vinicius Peixoto (vpeixoto) ** Changed in: linux-azure (Ubuntu Plucky) Assignee: (unassigned) => Vinicius Peixoto (vpeixoto) ** Description changed: - BugLink: FIXME + BugLink: https://bugs.launchpad.net/bugs/2127705 [Impact] A race condition in the hv_netvsc module can lead to a lockup where the RX queue of the network device becomes stuck, degrading the performance for users of the Azure kernel. [Fix] The following fix was introduced in 6.17: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9448ccd85336 Backport it to the P/N/J:azure trees (Questing already has it) in order to fix the issue for users of the linux-azure kernel. [Test plan] Build tested only; Microsoft will validate the bug fix. [Where problems could occur] Issues with this patch could cause hangs, lockups or generally some kind of network performance degradation for virtual machines running on top of Hyper-V. [Other info] SF #00418032 -- 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/2127705 Title: azure: backport ""hv_netvsc: fix loss of early receive events from host during channel open" Status in linux-azure package in Ubuntu: In Progress Status in linux-azure source package in Jammy: In Progress Status in linux-azure source package in Noble: In Progress Status in linux-azure source package in Plucky: In Progress Bug description: BugLink: https://bugs.launchpad.net/bugs/2127705 [Impact] A race condition in the hv_netvsc module can lead to a lockup where the RX queue of the network device becomes stuck, degrading the performance for users of the Azure kernel. [Fix] The following fix was introduced in 6.17: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9448ccd85336 Backport it to the P/N/J:azure trees (Questing already has it) in order to fix the issue for users of the linux-azure kernel. [Test plan] Build tested only; Microsoft will validate the bug fix. [Where problems could occur] Issues with this patch could cause hangs, lockups or generally some kind of network performance degradation for virtual machines running on top of Hyper-V. [Other info] SF #00418032 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/2127705/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
