Man thanks Gautam for the successful verification!
(I'm updating the tags accordingly ...)
** Tags removed: verification-needed-noble-linux
** Tags added: verification-done-noble-linux
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Many thx Anushree for the successful verification!
(I'm updating the tags accordingly ...)
** Tags removed: verification-needed-noble-linux
** Tags added: verification-done-noble-linux
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** Package changed: linux (Ubuntu) => subiquity
** Also affects: ubuntu-z-systems
Importance: Undecided
Status: New
** Changed in: ubuntu-z-systems
Assignee: (unassigned) => Skipper Bug Screeners (skipper-screen-team)
** Changed in: ubuntu-z-systems
Importance: Undecided => Med
Many thanks Janosch !
(I'm updating the tags accordingly ...)
** Tags removed: verification-needed-jammy-linux
** Tags added: verification-done-jammy-linux
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Okay, thx Gautam for the update of the plan.
So I'm leaving the status of this bug to incomplete - for now.
Please share the commit(s) of the fix, once they were sent to upstream, so that
we can track the inclusion into the Ubuntu kernels (6.8 for Ubuntu 24.04 and
6.11 for Ubuntu 24.10) here.
T
Hello Gautam, thanks for the explanation on why the system is getting
stuck in this particular case.
Well, you've mentioned in the bug description that reverting the following two
commits:
df938a5576f3 KVM: PPC: Book3S HV nestedv2: Do not inject certain interrupts
ec0f6639fa88 KVM: PPC: Book3S HV
Many thanks for test and verification!
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Title:
[Ubuntu 24.04] FW1060.00 (NH1060_026) sosreport is running to Kernel
OOPS crash
St
Many thanks for test and verification!
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Title:
kexec fails in LPAR when some cpus are disabled
Status in The Ubuntu-power-systems p
** Tags removed: petest-448
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Title:
[UBUNTU 22.04] KVM: s390: unhandled guest LPSWEY instruction
Status in Ubuntu on IBM z Systems:
I was able to successfully validate this on kernel 6.8.0-48:
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:Ubuntu 24.04.1 LTS
Release:24.04
Codename: noble
$ uname -a
Linux s1lp15 6.8.0-48-generic #48-Ubuntu SMP Fri Sep 27 13:02:00 UTC 2024 s39
** Changed in: ubuntu-power-systems
Status: In Progress => Fix Committed
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Title:
KOP L2 guest fails to boot with 1 core - SMT
** Changed in: ubuntu-power-systems
Status: In Progress => Fix Committed
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Title:
L2 Guest migration: continuously dumping whi
** Changed in: ubuntu-power-systems
Status: In Progress => Fix Committed
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Title:
Guest crashes post migration with migrate_mi
** Changed in: ubuntu-power-systems
Status: In Progress => Fix Committed
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Title:
Add 'mm: hold PTL from the first PTE while r
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Title:
KOP L2 guest fails to boot with 1 core - SMT8 topology
Status in The Ubuntu-power-systems project:
In Progress
Status in
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Title:
L2 Guest migration: continuously dumping while running NFS guest
migration
Status in The Ubuntu-power-systems project:
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Title:
Guest crashes post migration with migrate_misplaced_folio+0x4cc/0x5d0
Status in The Ubuntu-power-systems project:
In Pro
Patch/commit has landed in noble master-next, hence updating noble to
Fix Committed.
** Changed in: ubuntu-power-systems
Status: Triaged => In Progress
** Changed in: linux (Ubuntu Noble)
Status: Triaged => Fix Committed
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** Tags added: petest-459
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Title:
128M is not enough for kdump on s390 LPARs
Status in Ubuntu on IBM z Systems:
Fix Releas
** Tags added: petest-436
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Title:
[22.10 FEAT] KVM: Secure Execution guest dump encryption with customer
keys - kernel part
Statu
** Tags added: petest-450
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Title:
Undefined Behavior Sanitizer (UBSAN) causes failure to match symbols
Status in dh-kpatches:
Unk
** Tags added: petest-448
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Title:
[UBUNTU 22.04] KVM: s390: unhandled guest LPSWEY instruction
Status in Ubuntu on IBM z Systems:
** Tags added: petest-441
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Title:
[UBUNTU 24.04] IOMMU DMA mode changed in kernel config causes massive
throughput degradation for
** Tags added: petest-443
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Title:
[24.10 FEAT] [KRN1911] Vertical CPU Polarization Support Stage 2
Status in Ubuntu on IBM z System
** Tags added: petest-442
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Title:
[24.10 FEAT] [KRN1905] Kernel image in vmalloc space (V!=R)
Status in Ubuntu on IBM z Systems:
** Changed in: linux (Ubuntu Oracular)
Status: Fix Committed => Fix Released
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Title:
kexec fails in LPAR when some cpus are d
** Changed in: linux (Ubuntu)
Status: Fix Committed => Fix Released
** Changed in: ubuntu-z-systems
Status: Fix Committed => Fix Released
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** Changed in: ubuntu-z-systems
Status: Fix Committed => Fix Released
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Title:
[UBUNTU 24.04] IOMMU DMA mode changed in kernel
** Changed in: ubuntu-z-systems
Status: Fix Committed => Fix Released
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Title:
[24.10 FEAT] [KRN1911] Vertical CPU Polarizatio
** Changed in: ubuntu-power-systems
Status: Fix Committed => Fix Released
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Title:
Disable PCI_DYNAMIC_OF_NODES in Ubuntu
Sta
** Changed in: ubuntu-power-systems
Status: In Progress => Fix Committed
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Title:
[Ubuntu-24.04] FADump with recommended crash
** Also affects: subiquity
Importance: Undecided
Status: New
** Also affects: ubuntu-power-systems
Importance: Undecided
Status: New
** No longer affects: linux (Ubuntu)
** Changed in: ubuntu-power-systems
Assignee: (unassigned) => Ubuntu on IBM Power Systems Bug Triage
*** This bug is a duplicate of bug 2074376 ***
https://bugs.launchpad.net/bugs/2074376
** Changed in: linux (Ubuntu)
Status: Fix Committed => Fix Released
** Changed in: ubuntu-power-systems
Status: Fix Committed => Fix Released
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Title:
[Ubuntu 24.04] FW1060.00 (NH1060_026) sosre
patch set was applied to oracular 6.11 master-next tree
updating ticket to Fix Committed
** Changed in: linux (Ubuntu)
Status: In Progress => Fix Committed
** Changed in: ubuntu-z-systems
Status: In Progress => Fix Committed
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Title:
[UBUNTU 22.04] KVM: s390: unhandled guest LPSWEY
Pull request submitted to kernel team's mailing list:
https://lists.ubuntu.com/archives/kernel-team/2024-September/thread.html#153390
changing status to 'In Progress'.
** Changed in: linux (Ubuntu Noble)
Status: Triaged => In Progress
** Changed in: ubuntu-power-systems
Status: Tria
** Description changed:
SRU Justification:
[ Impact ]
* A KVM guest (VM) that got live migrated between two Power 10 systems
(using nested virtualization, means KVM on top of PowerVM) will
highly likely crash after about an hour.
* At that point it looked like the live
Commit landed in Ubuntu-5.15.0-120.130 (and newer)
and we have 5.15.0.121.121 in proposed.
Hence updating status to Fix Committed.
** Also affects: linux (Ubuntu Noble)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Oracular)
Importance: Medium
Status: Triage
** Summary changed:
- Guest crahses post migration with migrate_misplaced_folio+0x4cc/0x5d0
+ Guest crashes post migration with migrate_misplaced_folio+0x4cc/0x5d0
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** Information type changed from Private to Public
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Title:
[24.10 FEAT] [KRN1905] Kernel image in vmalloc space (V!=R)
Status in Ub
Pull request submitted to kernel team's mailing list:
https://lists.ubuntu.com/archives/kernel-team/2024-September/thread.html#153383
changing status to 'In Progress', assigning kernel team.
** Changed in: linux (Ubuntu Noble)
Status: Triaged => In Progress
** Changed in: ubuntu-power-syst
** Description changed:
SRU Justification:
[ Impact ]
* KVM 2nd level guest (means KVM VM that runs nested on top of a Power 10
PowerVM hypervisor) hangs during LTP (Linux Test Projects) test suite.
* It hangs with:
"Back trace of paca->saved_r1 (0xc00c1bc8bb00) (p
** Description changed:
SRU Justification:
[ Impact ]
- * A KVM guest (VM) that got live migrated between two Power 10 systems
-(using nested virtualization, means KVM on top of PowerVM) will
-highly likely crash after about an hour.
-
- * At that point it looked like the live
** Description changed:
+ SRU Justification:
+
+ [ Impact ]
+
+ * A KVM guest (VM) that got live migrated between two Power 10 systems
+(using nested virtualization, means KVM on top of PowerVM) will
+highly likely crash after about an hour.
+
+ * At that point it looked like the live
Pull request submitted to kernel team's mailing list:
https://lists.ubuntu.com/archives/kernel-team/2024-September/thread.html#153380
changing status to 'In Progress', assigning kernel team.
** Changed in: ubuntu-z-systems
Status: Incomplete => In Progress
** Changed in: linux (Ubuntu)
Looks like it is not yet clear if xive is the problem.
So isn't it too early to revert the patches? Is it really safe to do so?
I see they got introduced with kernel 6.8, but are still in the later kernels.
I don't see any upstream revert (ideally as "stable update"), which would be
the right app
** Description changed:
SRU Justification:
-
+
[Impact]
- * L1 host hangs when triggering FADump with recommended crash
-
** Summary changed:
- ISST-LTE:KOP:1060.1:doodlp1g8:Post Migration Non-MDC L1 eralp1 crashed with
migrate_misplaced_folio+0x4cc/0x5d0
+ Guest crahses post migration with migrate_misplaced_folio+0x4cc/0x5d0
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Pull request submitted to kernel team's mailing list:
https://lists.ubuntu.com/archives/kernel-team/2024-September/thread.html#153261
changing status to 'In Progress', assigning kernel team.
** Changed in: linux (Ubuntu Noble)
Status: Triaged => In Progress
** Changed in: ubuntu-power-syst
A test kernel was build in this PPA:
https://launchpad.net/~fheimes/+archive/ubuntu/lp2076406
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Title:
L2 Guest migration: continuous
Pull request submitted to kernel team's mailing list:
https://lists.ubuntu.com/archives/kernel-team/2024-September/thread.html#153260
changing status to 'In Progress', assigning kernel team.
** Changed in: linux (Ubuntu Noble)
Status: Confirmed => In Progress
** Changed in: ubuntu-power-sy
A test kernel is currently being build in this PPA:
https://launchpad.net/~fheimes/+archive/ubuntu/lp2070329
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Title:
KOP L2 guest fa
** Description changed:
+ SRU Justification:
+
+ [ Impact ]
+
+ * On a P10 system with SMT-8 configured
+a level 2 guest (VM) fails to boot in case
+it only has one core assigned.
+
+ [ Test Plan ]
+
+ * Setup an IBM Power 10 system - that support up to SMT-8
+and with firmware 1
** Description changed:
+ SRU Justification:
+
+ [ Impact ]
+
+ * While doing ISST testing it turned out that a 2nd level (KVM)
+guest (aka VM) continuously dumped when running an NFS
+guest migration.
+
+ [ Test Plan ]
+
+ * Setup two IBM Power 10 system (with firmware 1060, that of
** Summary changed:
- ISST-LTE:KOP:1060FW:evelp2 :L2 Guest migration: evelp2g4[L2]: while running
NFS guest migration continuously dumping
smp_call_function_many_cond+0x500/0x738 (unreliable) and watchdog: BUG: soft
lockup - CPU#14 stuck for 223s! [systemd-homed} (Fedora)
+ L2 Guest migration
=> (unassigned)
** Changed in: linux (Ubuntu Jammy)
Assignee: Frank Heimes (fheimes) => Canonical Kernel Team
(canonical-kernel-team)
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** Description changed:
+ SRU Justification:
+
+ [ Impact ]
+
+ * Hypervisor-initiated dumps for Secure Execution
+(aka confidential computing) guests are not helpful,
+because memory and CPU state is encrypted by a
+transient key only available to the Ultravisor (uv).
+
+ * Workl
Thanks for confirming, Timo!
** Changed in: ubuntu-z-systems
Status: In Progress => Fix Released
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Title:
zfs-dkms FTBFS
I think I got it, there are just two backports, for
commit e9bf3acb23f0a6e18438c35944d6cb618d16cf05 and
commit 437cfd714db9c1d28878a6e2555e9a730f3490c8 .
The rest are cherrypicks.
With that a test kernel is currently being build in this PPA:
https://launchpad.net/~fheimes/+archive/ubuntu/lp1959940
** Package changed: kernel-package (Ubuntu) => linux (Ubuntu)
** Also affects: ubuntu-power-systems
Importance: Undecided
Status: New
** Changed in: ubuntu-power-systems
Assignee: (unassigned) => Ubuntu on IBM Power Systems Bug Triage
(ubuntu-power-triage)
** Changed in: ubuntu-p
** Also affects: linux (Ubuntu Noble)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Oracular)
Importance: Undecided
Status: Confirmed
** Changed in: linux (Ubuntu Noble)
Status: New => Confirmed
** Changed in: linux (Ubuntu Noble)
Status: Conf
The commit is now included in the 24.04 / noble kernel:
Ubuntu-6.8.0-44.44 (and newer)
which is currently in -proposed:
linux-generic | 6.8.0-44.44| noble-proposed| amd64, arm64,
armhf, ppc64el, s390x
Hence updating this ticket for noble to Fix Committed.
** Changed in: linux (Ubu
** Also affects: linux (Ubuntu Noble)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Oracular)
Importance: High
Status: New
** Changed in: ubuntu-power-systems
Status: New => Triaged
** Changed in: linux (Ubuntu Noble)
Status: New => Triaged
*
** Also affects: linux (Ubuntu Noble)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Oracular)
Importance: High
Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage)
Status: Triaged
** Changed in: linux (Ubuntu Oracular)
Status: T
** Also affects: linux (Ubuntu Noble)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Oracular)
Importance: High
Status: Confirmed
** Changed in: linux (Ubuntu Noble)
Status: New => Confirmed
** Changed in: linux (Ubuntu Oracular)
Status: Confir
** Changed in: linux (Ubuntu Oracular)
Status: In Progress => Fix Committed
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Title:
kexec fails in LPAR when some cpus are di
Thank you Tasmiya and Jamie - I'm updating the tags accordingly ...
** Tags removed: verification-needed-noble-linux
** Tags added: verification-done-noble-linux
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Did the verification for the kernel (linux-generic) like above and based
on representative kernel modules (arch-specific and common):
noble:
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:Ubuntu 24.04 LTS
Release:24.04
Codename: noble
$ uname -a
Did the verification for the kernel (linux-generic) like above and based
on representative kernel modules (arch-specific and common):
noble:
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:Ubuntu 24.04 LTS
Release:24.04
Codename: noble
$ uname -a
** Description changed:
SRU Justification:
[ Impact ]
* The preferred way of doing stack unwinding on Linux on Z is via dwarf call
frame information.
In absence of a dwarf unwinder (as in the Linux kernel) a stack chain can be
maintained at runtime in addition to the dwarf unwindi
** Description changed:
SRU Justification:
[ Impact ]
- * Power's Linux ABIs all require an explicit call chain be stored on
+ * Power's Linux ABIs all require an explicit call chain be stored on
the call stack frames which are all accessible via the stack pointer.
- * Therefore,
** Description changed:
SRU Justification:
[ Impact ]
* The preferred way of doing stack unwinding on Linux on Z is via dwarf call
frame information.
In absence of a dwarf unwinder (as in the Linux kernel) a stack chain can be
maintained at runtime in addition to the dwarf unwindi
** Package changed: kernel-package (Ubuntu) => linux (Ubuntu)
** Also affects: ubuntu-power-systems
Importance: Undecided
Status: New
** Changed in: ubuntu-power-systems
Assignee: (unassigned) => Ubuntu on IBM Power Systems Bug Triage
(ubuntu-power-triage)
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Changed in: linux (Ubuntu Jammy)
Assignee: (unassigned) => Frank Heimes (fheimes)
** Changed in: linux (Ubuntu Jammy)
Status: New => Triaged
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** Changed in: ubuntu-power-systems
Assignee: (unassigned) => Ubuntu on IBM Power Systems Bug Triage
(ubuntu-power-triage)
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Titl
** Also affects: linux (Ubuntu Jammy)
Importance: Undecided
Status: New
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Title:
[22.10 FEAT] KVM: Secure Execution guest d
Updating this ticket with a message that I received via mail:
Secureboot lockdown was successfully tested by Grgo/IBM.
Test completed!
With that I'm closing this ticket as Fix Released.
** Changed in: ubuntu-z-systems
Assignee: (unassigned) => bugproxy (bugproxy)
** Changed in: ubuntu-z-sy
*** This bug is a duplicate of bug 2076147 ***
https://bugs.launchpad.net/bugs/2076147
This is a duplicate of:
LP#2076147 - "Add 'mm: hold PTL from the first PTE while reclaiming a large
folio' to fix L2 Guest hang during LTP Test"
https://bugs.launchpad.net/bugs/2076147
Marking this LP bug a
** Changed in: ubuntu-power-systems
Importance: Undecided => Medium
** Changed in: ubuntu-power-systems
Status: New => Fix Committed
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** Also affects: ubuntu-power-systems
Importance: Undecided
Status: New
** Changed in: ubuntu-power-systems
Assignee: (unassigned) => Ubuntu on IBM Power Systems Bug Triage
(ubuntu-power-triage)
** Changed in: linux (Ubuntu)
Assignee: Ubuntu on IBM Power Systems Bug Triage (u
** Package changed: kernel-package (Ubuntu) => linux (Ubuntu)
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Title:
ISST-LTE:KOP:1060.1:doodlp1g8:Post Migration Non-MDC L1 eralp1
Many thanks for the successful verification, Barbara!
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Title:
[UBUNTU 24.04] IOMMU DMA mode changed in kernel config causes massive
Many thanks Kowshik Jois for the successful verification.
The verification results are at the duplicate bug:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2075721/comments/7
re-posting here:
--- Comment From kowshik.j...@in.ibm.com 2024-08-09 11:36 EDT---
I have tested this scenario
*** This bug is a duplicate of bug 2074376 ***
https://bugs.launchpad.net/bugs/2074376
Many thanks Kowshik Jois for the successful verification!
** Changed in: ubuntu-power-systems
Status: New => Fix Committed
** Changed in: linux (Ubuntu)
Status: New => Fix Committed
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** Changed in: ubuntu-z-systems
Status: In Progress => Fix Committed
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Title:
[UBUNTU 22.04] s390/cpum_cf: make crypto counter
Hi @schopin, I agree - that is what is now under option 1) under test
plan in the SRU Justification.
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Title:
Revert back frame point
** Description changed:
- Power's Linux ABIs all require an explicit call chain be stored on the call
stack frames which are all accessible via the stack pointer.
- Therefore, having a (soft/simulated) frame pointer does not improve
backtraces at all on Power.
+ SRU Justification:
- However,
** Description changed:
SRU Justification:
[ Impact ]
- * The preferred way of doing stack unwinding on Linux on Z is via dwarf call
frame information.
+ * The preferred way of doing stack unwinding on Linux on Z is via dwarf call
frame information.
In absence of a dwarf unwinder (
** Description changed:
- The preferred way of doing stack unwinding on Linux on Z is via dwarf call
frame information.
+ SRU Justification:
+
+ [ Impact ]
+
+ * The preferred way of doing stack unwinding on Linux on Z is via dwarf call
frame information.
In absence of a dwarf unwinder (as
Many thanks doko, the debdiff looks reasonable and good.
I did a test build (based on v1.22.6ubuntu6.1
https://launchpad.net/~ubuntu-toolchain-r/+archive/ubuntu/ppa/+sourcepub/16274696/+listing-archive-extra)
and wasn't able to find an indication of FBs (in the debug symbols) anymore
(using read
** Description changed:
SRU Justification:
[ Impact ]
- * KVM 2nd level guest (means KVM VM that runs nested on top of a Power 10
-PowerVM hypervisor) hangs during LTP (Linux Test Projects) test suite.
+ * KVM 2nd level guest (means KVM VM that runs nested on top of a Power 10
+
** Summary changed:
- L2 Guest hung during LTP Tests. Back trace of paca->saved_r1
(0xc00c1bc8bb00) (possibly stale) @ new_slab
+ Add 'mm: hold PTL from the first PTE while reclaiming a large folio' to fix
L2 Guest hung during LTP Test
** Summary changed:
- Add 'mm: hold PTL from the first
** Changed in: ubuntu-power-systems
Status: New => Triaged
** Changed in: linux (Ubuntu)
Status: New => Triaged
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https://bugs.launchpad.net/bugs/2076147
Title:
** Description changed:
+ SRU Justification:
+
+ [ Impact ]
+
+ * KVM 2nd level guest (means KVM VM that runs nested on top of a Power 10
+PowerVM hypervisor) hangs during LTP (Linux Test Projects) test suite.
+
+ * It hangs with:
+"Back trace of paca->saved_r1 (0xc00c1bc8bb00) (p
I picked the commit and started a test build of the patched kernel that is
currently building here:
launchpad.net/~fheimes/+archive/ubuntu/lp2076147
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https://bugs.launchpad.n
Hello and thanks for raising this issue.
Do you have a reproducer on this issue?
Since it's common code (memory mgnt) this needs to be handled with care, since
it will affect all installations.
Is it correct that you faced this issue while running the LTP Test suite?
Could you provide more detail
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=7be6ce7043b4cf293c8826a48fd9f56931cef2cf
DOes not seem to have been upstream tagged for stable updates, hence manual
submission needed.
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** Package changed: kernel-package (Ubuntu) => linux (Ubuntu)
** Also affects: ubuntu-power-systems
Importance: Undecided
Status: New
** Changed in: ubuntu-power-systems
Assignee: (unassigned) => Ubuntu on IBM Power Systems Bug Triage
(ubuntu-power-triage)
** Changed in: linux (U
*** This bug is a duplicate of bug 2074376 ***
https://bugs.launchpad.net/bugs/2074376
I just noticed that the Canonical kernel team has already a Launchpad bug open
on this and already started to work on it (it's meanwhile Fix Committed for
noble/24.04 and oracular/24.10).
So I'm marking th
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