| 2020-03-12 08:49:51 |
bugproxy |
bug |
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added bug |
| 2020-03-12 08:49:54 |
bugproxy |
tags |
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architecture-all bugnameltc-184224 severity-critical targetmilestone-inin2004 |
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| 2020-03-12 08:49:55 |
bugproxy |
ubuntu: assignee |
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Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) |
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| 2020-03-12 08:50:00 |
bugproxy |
affects |
ubuntu |
linux (Ubuntu) |
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| 2020-03-12 11:11:02 |
Andrew Cloke |
bug task added |
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ubuntu-power-systems |
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| 2020-03-12 11:11:51 |
Andrew Cloke |
ubuntu-power-systems: assignee |
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Canonical Kernel Team (canonical-kernel-team) |
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| 2020-03-12 11:11:57 |
Andrew Cloke |
ubuntu-power-systems: importance |
Undecided |
Critical |
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| 2020-03-12 16:42:24 |
Frank Heimes |
ubuntu-power-systems: status |
New |
Triaged |
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| 2020-03-13 11:53:42 |
Frank Heimes |
description |
virtio-blk disks can go dissfunctional when swiotlb fills up
For example, with a PV guest choose a small swiotlb (30MB) and create IO load on several virtio-blk disks simultaneously. It actually should not matter what causes the swiotlb pressure (can be virtio-net as well).
Fixes posted upstream:
https://lkml.org/lkml/2020/2/13/306
We will need backports to support Protected Virtualization.
IBM verified that the patches apply cleanly on focal/master-next, upstream commit ids for reference:
commit bab7e6f05699a481787f7659c4f766dd87187dae
Author: Halil Pasic <pasic@linux.ibm.com>
Date: Thu Feb 13 13:37:27 2020 +0100
virtio-blk: fix hw_queue stopped on arbitrary error
commit 24506976aec92052e9fe328146a2e574a1190986
Author: Halil Pasic <pasic@linux.ibm.com>
Date: Thu Feb 13 13:37:28 2020 +0100
virtio-blk: improve virtqueue error to BLK_STS
Also applies cleanly on 19.10..... |
virtio-blk disks can go dissfunctional when swiotlb fills up
virtio-blk hw queue gets possibly permanently stopped when swiotlb full
For example, with a PV guest choose a small swiotlb (30MB) and create IO load on several virtio-blk disks simultaneously. It actually should not matter what causes the swiotlb pressure (can be virtio-net as well).
Fixes posted upstream:
https://lkml.org/lkml/2020/2/13/306
We will need backports to support Protected Virtualization.
IBM verified that the patches apply cleanly on focal/master-next, upstream commit ids for reference:
commit bab7e6f05699a481787f7659c4f766dd87187dae
Author: Halil Pasic <pasic@linux.ibm.com>
Date: Thu Feb 13 13:37:27 2020 +0100
virtio-blk: fix hw_queue stopped on arbitrary error
commit 24506976aec92052e9fe328146a2e574a1190986
Author: Halil Pasic <pasic@linux.ibm.com>
Date: Thu Feb 13 13:37:28 2020 +0100
virtio-blk: improve virtqueue error to BLK_STS
Also applies cleanly on 19.10..... |
|
| 2020-03-13 11:53:51 |
Frank Heimes |
summary |
[UBUNTU 20.04] virtio-blk hw queue gets possibly permanently stopped when swiotlb full |
[UBUNTU 20.04] virtio-blk disks can go dissfunctional when swiotlb fills up |
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| 2020-03-13 12:34:53 |
Frank Heimes |
ubuntu-power-systems: assignee |
Canonical Kernel Team (canonical-kernel-team) |
Frank Heimes (fheimes) |
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| 2020-03-13 12:34:58 |
Frank Heimes |
linux (Ubuntu): assignee |
Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) |
Frank Heimes (fheimes) |
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| 2020-03-13 12:35:03 |
Frank Heimes |
ubuntu-power-systems: status |
Triaged |
In Progress |
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| 2020-03-13 12:35:08 |
Frank Heimes |
linux (Ubuntu): status |
New |
In Progress |
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| 2020-03-16 12:08:46 |
Frank Heimes |
linux (Ubuntu): status |
In Progress |
Fix Committed |
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| 2020-03-16 12:08:50 |
Frank Heimes |
ubuntu-power-systems: status |
In Progress |
Fix Committed |
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| 2020-03-24 23:14:19 |
Ubuntu Kernel Bot |
tags |
architecture-all bugnameltc-184224 severity-critical targetmilestone-inin2004 |
architecture-all bugnameltc-184224 severity-critical targetmilestone-inin2004 verification-needed-focal |
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| 2020-03-25 14:40:02 |
bugproxy |
tags |
architecture-all bugnameltc-184224 severity-critical targetmilestone-inin2004 verification-needed-focal |
architecture-all bugnameltc-184224 severity-critical targetmilestone-inin2004 verification-done-focal |
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| 2020-03-31 10:51:42 |
Launchpad Janitor |
linux (Ubuntu): status |
Fix Committed |
Fix Released |
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| 2020-03-31 10:51:42 |
Launchpad Janitor |
cve linked |
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2020-8835 |
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| 2020-03-31 11:20:57 |
Frank Heimes |
ubuntu-power-systems: status |
Fix Committed |
Fix Released |
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