Ubuntu
linux package

kernel panic on xen hypervisor boot using kernel 3.0.0.19

Bug #995933 reported by Lode Mertens
14
This bug affects 2 people
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Fix Released
High
Unassigned

Bug Description

I just updated my ubuntu 11.10 with the latest kernel (3.0.0.19) and my xen hypervisor won't boot with this kernel.

...
xen_register_pirq+0x82/0xe0
xen_register_gsi.part.4+0x4a/0xd0
acpi_register_gsi_xen+0x20/0x30
acpi_register_gsi+0xf/0x20
acpi_pci_irq_enable+0x12e/0x202
pcibios_enable_device+0x39/0x40
....

After some googling and digging around I found that a kernel patch is to blame "x86/ioapic: Add register level checks to detect bogus io-apic entries ". See https://lkml.org/lkml/2012/4/3/190 for more details.
Apparently this patch has already been reverted in the default kernel for 12.04 (https://launchpad.net/ubuntu/precise/+source/linux/3.2.0-23.36), but not yet for the latest kernel for 11.10. Could you please also revert it in the 3.0.0.19 kernel.

Best regards,
Lode

Tags: kernel panic xen
Brad Figg (brad-figg)
affects: linux-meta (Ubuntu) → linux (Ubuntu)
Revision history for this message
Dave Gilbert (ubuntu-treblig) wrote :

Triaged because he's identified the patch
High because not being able to start Xen seems a reasonably nasty problem.
(although it's Oneiric so hmmm.)

Changed in linux (Ubuntu):
importance: Undecided → High
status: New → Triaged
Revision history for this message
Julian Wiedmann (jwiedmann) wrote :

The revert landed in -updates with 3.0.0-20.34.

Changed in linux (Ubuntu):
status: Triaged → Fix Released
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