Public bug reported: Microsoft received a customer report of failures when trying to take a kdump. This issue was resolved by three small Linux kernel fixes.
Microsoft would like to request this following three commits in all supported releases: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/video/fbdev/hyperv_fb.c?id=aa5b7d11c7cb87c266d705b237368985e7171958 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/hv/channel_mgmt.c?id=77db0ec8b7764cb9b09b78066ebfd47b2c0c1909 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/hv/channel_mgmt.c?id=8c2d5e0640e53c14b6240e9bf1e32a2226e6e6ca Patch #1 solves a problem where the “Unable to send packet via vmbus” message is output continuously. But with that problem fixed, the second problem can occur where the kdump kernel panics due to receiving an unexpected VMbus UNLOAD complete message. Patch #2 prevents the UNLOAD complete message from ever occurring in the kdump kernel. But if the UNLOAD complete message does occur at some unexpected time, Patch #3 prevents it from causing a panic. ** Affects: linux-azure (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1927438 Title: Commits To Fix Kdump Failures To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1927438/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
