kvm doesn't work on 36 physical bits systems
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
| linux (Ubuntu) |
High
|
Thadeu Lima de Souza Cascardo | ||
| Cosmic |
High
|
Thadeu Lima de Souza Cascardo |
Bug Description
[Impact]
A guest will hang while booting under 4.18.0-10.11 because of "kvm: x86: Set highest physical address bits in non-present/
[Test Case]
A guest was booted after applying the patch.
[Regression Potential]
It might break KVM on systems with different physical memory limits, which is just what upstream might have been testing the most.
============
A fix is already upstream, and already present in 4.18.14.
This would be upstream commit
daa07cbc9ae3da2
CVE References
Changed in linux (Ubuntu Cosmic): | |
status: | New → In Progress |
importance: | Undecided → High |
assignee: | nobody → Thadeu Lima de Souza Cascardo (cascardo) |
description: | updated |
Changed in linux (Ubuntu Cosmic): | |
status: | In Progress → Fix Committed |
Tested with 4.18.0-11, and it is working fine now.
Thanks.
Cascardo.
tags: |
added: verification-done-cosmic removed: verification-needed-cosmic |
Launchpad Janitor (janitor) wrote : | #3 |
This bug was fixed in the package linux - 4.18.0-11.12
---------------
linux (4.18.0-11.12) cosmic; urgency=medium
* linux: 4.18.0-11.12 -proposed tracker (LP: #1799445)
* arm64: snapdragon: WARNING: CPU: 0 PID: 1 arch/arm64/
reserve_
- SAUCE: arm64: Fix /proc/iomem for reserved but not memory regions
* arm64: snapdragon: WARNING: CPU: 0 PID: 1 at drivers/
gic_
- SAUCE: arm64: dts: msm8916: camms: fix gic_irq_
* The front MIC can't work on the Lenovo M715 (LP: #1797292)
- ALSA: hda/realtek - Fix the problem of the front MIC on the Lenovo M715
* Provide mode where all vCPUs on a core must be the same VM (LP: #1792957)
- KVM: PPC: Book3S HV: Provide mode where all vCPUs on a core must be the same
VM
* fscache: bad refcounting in fscache_op_complete leads to OOPS (LP: #1797314)
- SAUCE: fscache: Fix race in decrementing refcount of op->npages
* hns3: autoneg settings get lost on down/up (LP: #1797654)
- net: hns3: Fix for information of phydev lost problem when down/up
* not able to unwind the stack from within __kernel_
vDSO (LP: #1797963)
- powerpc/vdso: Correct call frame information
* Signal 7 error when running GPFS tracing in cluster (LP: #1792195)
- powerpc/mm/books3s: Add new pte bit to mark pte temporarily invalid.
- powerpc/mm/radix: Only need the Nest MMU workaround for R -> RW transition
* Support Edge Gateway's WIFI LED (LP: #1798330)
- SAUCE: mwifiex: Switch WiFi LED state according to the device status
* Support Edge Gateway's Bluetooth LED (LP: #1798332)
- SAUCE: Bluetooth: Support for LED on Edge Gateways
* kvm doesn't work on 36 physical bits systems (LP: #1798427)
- KVM: x86: fix L1TF's MMIO GFN calculation
* CVE-2018-15471
- xen-netback: fix input validation in xenvif_
* regression in 'ip --family bridge neigh' since linux v4.12 (LP: #1796748)
- rtnetlink: fix rtnl_fdb_dump() for ndmsg header
-- Stefan Bader <email address hidden> Tue, 23 Oct 2018 18:59:15 +0200
Changed in linux (Ubuntu Cosmic): | |
status: | Fix Committed → Fix Released |
Changed in linux (Ubuntu): | |
status: | Fix Committed → Fix Released |
Brad Figg (brad-figg) wrote : | #5 |
This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.
See https:/
tags: | added: verification-needed-bionic |
tags: |
added: kernel-fixup-verification-needed-bionic removed: verification-needed-bionic |
Andy Whitcroft (apw) wrote : | #6 |
This bug was erroneously marked for verification in bionic; verification is not required and verification-
tags: | added: verification-done-bionic |
This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification- needed- cosmic' to 'verification- done-cosmic' . If the problem still exists, change the tag 'verification- needed- cosmic' to 'verification- failed- cosmic' .
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.
See https:/ /wiki.ubuntu. com/Testing/ EnableProposed for documentation how to enable and use -proposed. Thank you!