Can you install one of the daily ISOs for mantic (23.10) and test to see if this is an issue? The patches you mention are included in the Mantic kernel already, so that one should not see the failure.
We're still trying to figure out how to get you a working 6.2 kernel. -- 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/2020022 Title: [SRU][22.04.2 & 23.10] OS cannot boot successfully when enabling VMD in UEFI setup Status in linux package in Ubuntu: Fix Released Status in linux source package in Kinetic: Won't Fix Status in linux source package in Lunar: In Progress Status in linux source package in Mantic: Fix Released Bug description: [Impact] When enabling VMD in UEFI setup, OS cannot boot successfully. And, the panic leads to the system reboot. The following log is shown: [ 166.605518] DMAR: VT-d detected Invalidation Queue Error: Reason f [ 166.605522] DMAR: VT-d detected Invalidation Time-out Error: SID ffff [ 166.612445] DMAR: VT-d detected Invalidation Completion Error: SID ffff [ 166.612447] DMAR: QI HEAD: UNKNOWN qw0 = 0x0, qw1 = 0x0 [ 166.612449] DMAR: QI PRIOR: UNKNOWN qw0 = 0x0, qw1 = 0x0 ... Additional info: * The issue happens on both Lenovo SE350 server and Lenovo SR850 v2 server. Debugging info and fix commit info: * `git bisect` indicates the offending commit is 6aab5622296b ("PCI: vmd: Clean up domain before enumeration"). The root cause is that VMD driver tries to clear a PCI configuration space range when resetting a VMD domain (https://github.com/torvalds/linux/blob/master/drivers/pci/controller/vmd.c#L544), which leads to the failure. [Fix] * Another `git bisect` indicates the fix commit is 20f3337d350c ("x86: don't use REP_GOOD or ERMS for small memory clearing). I confirmed that this commit can fix the issue. Would it be possible to include the commit 20f3337d350c in Ubuntu 22.04.2/23.10 kernel? [Test Plan] Reproduce Step 1.Disable Intel VMD in BIOS settings System Settings --> Devices and I/O Ports --> Intel VMD technology --> Enable/Disable Intel VMD : Disabled 2.Install OS 3.Enable Intel VMD in BIOS settings System Settings --> Devices and I/O Ports --> Intel VMD technology --> Enable/Disable Intel VMD : Enabled 4.Rebooting will reproduce this issue [ Where problems could occur ] * Lenovo SE350 server and Lenovo SR850 v2 server * The regression leads to the boot failure (cannot boot info OS successfully). [ Other Info ] https://code.launchpad.net/~bladernr/ubuntu/+source/linux/+git/lunar/+ref/LP2020022 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2020022/+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
