msg_zerocopy.sh in net from ubuntu_kernel_selftests failed
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
| ubuntu-kernel-tests |
Undecided
|
Colin Ian King | ||
| linux (Ubuntu) |
Medium
|
Unassigned | ||
| Disco |
Undecided
|
Unassigned | ||
| Eoan |
Undecided
|
Unassigned | ||
| Focal |
Medium
|
Colin Ian King | ||
| linux-hwe (Ubuntu) |
Undecided
|
Unassigned | ||
| Bionic |
Low
|
Unassigned |
Bug Description
== SRU Justification [ FOCAL ] ==
The msg_zerocopy.sh kernel self test will fail on machines that don't have 2 or 3 CPUs such as 1 CPU cloud instances since the C test program tries to set CPU affinity to CPUs 2 and 3 and bails out if it fails.
== Fix ==
Upstream linux-next commit
commit 16f6458f2478b55
Author: Willem de Bruijn <email address hidden>
Date: Wed Aug 5 04:40:45 2020 -0400
selftests/net: relax cpu affinity requirement in msg_zerocopy test
The fix now just emits a warning that CPU affinity can't be set rather than cause an exit(1) termination.
== Test cast ==
Run the msg_zerocopy.sh test from the kernel net selftest on a 1 CPU system. Without the fix the test fails. With the fix it runs successfully as expected.
== Regression Potential ==
The original test pinned the CPUs for a benchmarking metric, for our testing we are using this to test to see if the operations in the test work successfully. There is a potential that users using this test will not notice the warning if they are using this test as a benchmark on a 1 CPU system and may get more jittery timing in their benchmarks rather than a test failing and complaining they are not running it on a suitable multi-CPU system. However, the likelyhood of a user using this test on a single CPU system for benchmarking is small and as it stands the test will now run and produce potentially jittery benchmarks on a 1 CPU system compared to previously where it never ran.
-------
This test will return 1
$ sudo ./msg_zerocopy.sh
ipv4 tcp -t 1
./msg_zerocopy: setaffinity 2
./msg_zerocopy: setaffinity 3
$ echo $?
1
ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: linux-image-
ProcVersionSign
Uname: Linux 4.18.0-13-generic x86_64
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Jan 21 07:41 seq
crw-rw---- 1 root audio 116, 33 Jan 21 07:41 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
ApportVersion: 2.20.10-0ubuntu13.1
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
Date: Mon Jan 21 07:50:33 2019
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
Lsusb: Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
PciMultimedia:
ProcFB: 0 cirrusdrmfb
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.175.1
RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/01/2014
dmi.bios.vendor: SeaBIOS
dmi.bios.version: Ubuntu-
dmi.chassis.type: 1
dmi.chassis.vendor: QEMU
dmi.chassis.
dmi.modalias: dmi:bvnSeaBIOS:
dmi.product.name: Standard PC (i440FX + PIIX, 1996)
dmi.product.
dmi.sys.vendor: QEMU
CVE References
Po-Hsu Lin (cypressyew) wrote : | #1 |
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
Found in 4.18 Bionic AWS as well.
tags: | added: linux-kvm sru-20190603 ubuntu-kernel-selftests |
summary: |
- msg_zerocopy in net from ubuntu_kernel_selftests failed on C + msg_zerocopy in net from ubuntu_kernel_selftests failed |
tags: | added: sru-20190701 |
tags: | added: gke |
Didn't see this on 5.0 B-AWS
Po-Hsu Lin (cypressyew) wrote : | #5 |
Saw this on 5.0 D-AWS (at lease on c4.large, m4.large)
tags: | added: sru-20190902 |
tags: |
added: disco removed: cosmic |
tags: | added: aws |
tags: | added: sru-20190930 |
tags: | added: gcp |
no longer affects: | linux-azure (Ubuntu Cosmic) |
no longer affects: | linux-aws (Ubuntu Cosmic) |
no longer affects: | linux (Ubuntu Cosmic) |
Po-Hsu Lin (cypressyew) wrote : | #6 |
For this issue on D-Azure 5.0
5.0.0-1023.24
It's not failing with all the instances.
Failed:
* Standard_B1ms
* Standard_F2s_v2
* Standard_E2s_v3
* Standard_D2s_v3
Passed:
* Standard_L8s_v2
* Standard_L4s
* Standard_GS2
* Standard_F32s_v2
* Standard_D16s_v3
Test output on an instance (Standard_B1ms) that failed with this test:
selftests: net: msg_zerocopy.sh
======
ipv4 tcp -t 1
./msg_zerocopy: setaffinity 2
./msg_zerocopy: setaffinity 3
not ok 1..20 selftests: net: msg_zerocopy.sh [FAIL]
Test output on an instance (Standard_L8s_v2) that passed with this test:
selftests: net: msg_zerocopy.sh
======
ipv4 tcp -t 1
tx=57024 (3558 MB) txc=0 zc=n
rx=28513 (3558 MB)
ipv4 tcp -z -t 1
tx=49763 (3105 MB) txc=49763 zc=n
rx=24883 (3105 MB)
ok
ipv6 tcp -t 1
tx=59548 (3716 MB) txc=0 zc=n
rx=29775 (3716 MB)
ipv6 tcp -z -t 1
tx=49549 (3092 MB) txc=49549 zc=n
rx=24776 (3092 MB)
ok
ipv4 udp -t 1
tx=51972 (3243 MB) txc=0 zc=n
rx=51963 (3242 MB)
ipv4 udp -z -t 1
tx=41616 (2596 MB) txc=41616 zc=n
rx=41615 (2596 MB)
ok
ipv6 udp -t 1
tx=53761 (3354 MB) txc=0 zc=n
rx=53736 (3353 MB)
ipv6 udp -z -t 1
tx=41872 (2612 MB) txc=41872 zc=n
rx=41872 (2612 MB)
ok
OK. All tests passed
ok 1..20 selftests: net: msg_zerocopy.sh [PASS]
Changed in linux-azure (Ubuntu Disco): | |
status: | New → Confirmed |
Po-Hsu Lin (cypressyew) wrote : | #7 |
For D-AWS , it's not failing on all nodes.
Take ARM64 instances for example, this has passed on a1.2xlarge but not a1.large / a1.medium
tags: | added: sru-20191111 |
Po-Hsu Lin (cypressyew) wrote : | #8 |
Found on E-AWS 5.3.0-1009.10-aws
Test passed with ARM64 instances a1.2xlarge but failed on the other 2, this issue can be found on AMD64 instances as well.
tags: | added: sru-20191202 |
summary: |
- msg_zerocopy in net from ubuntu_kernel_selftests failed + msg_zerocopy.sh in net from ubuntu_kernel_selftests failed |
tags: | added: sru-20200316 |
Changed in linux-aws (Ubuntu Disco): | |
status: | New → Won't Fix |
Changed in linux-azure (Ubuntu Disco): | |
status: | Confirmed → Won't Fix |
Changed in linux (Ubuntu Disco): | |
status: | New → Won't Fix |
tags: | added: oracle sru-20200629 |
Po-Hsu Lin (cypressyew) wrote : | #9 |
With Oracle 5.4.0-1021
This is failing on VM.Standard2.1 but passed with VM.Standard2.16
tags: | added: 5.4 |
Sean Feole (sfeole) wrote : | #10 |
Focal 5.4(SRU 2020/06/29)
3367. 07/25 02:26:31 DEBUG| utils:0153| [stdout] # selftests: net: msg_zerocopy.sh
3368. 07/25 02:26:31 DEBUG| utils:0153| [stdout] # ipv4 tcp -t 1
3369. 07/25 02:26:31 DEBUG| utils:0153| [stdout] # ./msg_zerocopy: setaffinity 2
3370. 07/25 02:26:31 DEBUG| utils:0153| [stdout] # ./msg_zerocopy: setaffinity 3
3371. 07/25 02:26:31 DEBUG| utils:0153| [stdout] not ok 21 selftests: net: msg_zerocopy.sh # exit=1
tags: | added: 5.3 |
Changed in ubuntu-kernel-tests: | |
status: | New → Confirmed |
Colin Ian King (colin-king) wrote : | #11 |
Only occurs on systems that cannot set affinity to CPU 2 and CPU 3 because the test tries to do this and fails. Tut tut, bad test.
Fix submitted and re-worked, improved fix sent upstream: https:/
Changed in ubuntu-kernel-tests: | |
assignee: | nobody → Colin Ian King (colin-king) |
Colin Ian King (colin-king) wrote : | #12 |
description: | updated |
Changed in linux (Ubuntu Eoan): | |
status: | New → Won't Fix |
Changed in linux-aws (Ubuntu Eoan): | |
status: | New → Won't Fix |
Changed in linux-azure (Ubuntu Eoan): | |
status: | New → Won't Fix |
Po-Hsu Lin (cypressyew) wrote : | #13 |
I would like to note that although Eoan and Disco has already reached their end-of-life, we still have 5.3 / 5.0 kernel for clouds.
Next is to check if this can be reproduced on those.
no longer affects: | linux-aws (Ubuntu) |
Changed in linux (Ubuntu Focal): | |
status: | New → Fix Committed |
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-focal |
Colin Ian King (colin-king) wrote : | #15 |
Ran the tests with -proposed kernel on a 1 CPU system, tests now pass:
17:52:02 DEBUG| [stdout] # OK. All tests passed
17:52:02 DEBUG| [stdout] ok 21 selftests: net: msg_zerocopy.sh
tags: |
added: verification-done-focal removed: verification-needed-focal |
Changed in ubuntu-kernel-tests: | |
status: | Confirmed → Triaged |
Po-Hsu Lin (cypressyew) wrote : | #16 |
The net test was skipped on all of the instances with B-gke-5.3.0-1033.35
Launchpad Janitor (janitor) wrote : | #17 |
This bug was fixed in the package linux - 5.8.0-16.17
---------------
linux (5.8.0-16.17) groovy; urgency=medium
* groovy/linux: 5.8.0-16.17 -proposed tracker (LP: #1891233)
* Miscellaneous Ubuntu changes
- hio -- Update to use bio_{start,
- Enable hio driver
- [Packaging] Temporarily disable building doc package contents
linux (5.8.0-15.16) groovy; urgency=medium
* groovy/linux: 5.8.0-15.16 -proposed tracker (LP: #1891177)
* Miscellaneous Ubuntu changes
- SAUCE: Documentation: import error c_funcptr_sig_re, c_sig_re (sphinx-
doc/
linux (5.8.0-14.15) groovy; urgency=medium
* groovy/linux: 5.8.0-14.15 -proposed tracker (LP: #1891085)
* Packaging resync (LP: #1786013)
- [Packaging] update helper scripts
* msg_zerocopy.sh in net from ubuntu_
- selftests/net: relax cpu affinity requirement in msg_zerocopy test
* Fix missing HDMI/DP Audio on an HP Desktop (LP: #1890441)
- ALSA: hda/hdmi: Add quirk to force connectivity
* Add initial audio support for Lenovo ThinkStation P620 (LP: #1890317)
- ALSA: usb-audio: Add support for Lenovo ThinkStation P620
* Fix IOMMU error on AMD Radeon Pro W5700 (LP: #1890306)
- PCI: Mark AMD Navi10 GPU rev 0x00 ATS as broken
* Enlarge hisi_sec2 capability (LP: #1890222)
- crypto: hisilicon - update SEC driver module parameter
* Miscellaneous Ubuntu changes
- [Config] Re-enable signing for ppc64el
-- Seth Forshee <email address hidden> Tue, 11 Aug 2020 15:32:58 -0500
Changed in linux (Ubuntu): | |
status: | Confirmed → Fix Released |
no longer affects: | linux-azure (Ubuntu) |
no longer affects: | linux-aws (Ubuntu Focal) |
no longer affects: | linux-aws (Ubuntu Eoan) |
no longer affects: | linux-aws (Ubuntu Disco) |
Po-Hsu Lin (cypressyew) wrote : | #18 |
Temporary workaround reverted:
https:/
no longer affects: | linux-azure (Ubuntu Focal) |
Changed in ubuntu-kernel-tests: | |
status: | Triaged → Fix Released |
Po-Hsu Lin (cypressyew) wrote : | #19 |
Just noticed that this issue still exists in B/hwe (5.3)
Changed in ubuntu-kernel-tests: | |
status: | Fix Released → Confirmed |
no longer affects: | linux-azure (Ubuntu Disco) |
no longer affects: | linux-azure (Ubuntu Eoan) |
no longer affects: | linux (Ubuntu Bionic) |
Changed in linux (Ubuntu Focal): | |
assignee: | nobody → Colin Ian King (colin-king) |
Changed in linux-hwe (Ubuntu): | |
status: | New → Invalid |
tags: | added: sru-20200810 |
Changed in linux-hwe (Ubuntu Bionic): | |
importance: | Undecided → Low |
status: | New → Fix Committed |
Changed in linux (Ubuntu Focal): | |
importance: | Undecided → Medium |
Changed in linux (Ubuntu): | |
importance: | Undecided → Medium |
Launchpad Janitor (janitor) wrote : | #20 |
This bug was fixed in the package linux - 5.4.0-45.49
---------------
linux (5.4.0-45.49) focal; urgency=medium
* focal/linux: 5.4.0-45.49 -proposed tracker (LP: #1893050)
* [Potential Regression] dscr_inherit_
ubuntu_
- powerpc/64s: Don't init FSCR_DSCR in __init_FSCR()
linux (5.4.0-44.48) focal; urgency=medium
* focal/linux: 5.4.0-44.48 -proposed tracker (LP: #1891049)
* Packaging resync (LP: #1786013)
- [Packaging] update helper scripts
* ipsec: policy priority management is broken (LP: #1890796)
- xfrm: policy: match with both mark and mask on user interfaces
linux (5.4.0-43.47) focal; urgency=medium
* focal/linux: 5.4.0-43.47 -proposed tracker (LP: #1890746)
* Packaging resync (LP: #1786013)
- update dkms package versions
* Devlink - add RoCE disable kernel support (LP: #1877270)
- devlink: Add new "enable_roce" generic device param
- net/mlx5: Document flow_steering_mode devlink param
- net/mlx5: Handle "enable_roce" devlink param
- IB/mlx5: Rename profile and init methods
- IB/mlx5: Load profile according to RoCE enablement state
- net/mlx5: Remove unneeded variable in mlx5_unload_one
- net/mlx5: Add devlink reload
- IB/mlx5: Do reverse sequence during device removal
* msg_zerocopy.sh in net from ubuntu_
- selftests/net: relax cpu affinity requirement in msg_zerocopy test
* Enlarge hisi_sec2 capability (LP: #1890222)
- Revert "UBUNTU: [Config] Disable hisi_sec2 temporarily"
- crypto: hisilicon - update SEC driver module parameter
* Fix missing HDMI/DP Audio on an HP Desktop (LP: #1890441)
- ALSA: hda/hdmi: Add quirk to force connectivity
* Fix IOMMU error on AMD Radeon Pro W5700 (LP: #1890306)
- PCI: Mark AMD Navi10 GPU rev 0x00 ATS as broken
* ASoC:amd:renoir: the dmic can't record sound after suspend and resume
(LP: #1890220)
- SAUCE: ASoC: amd: renoir: restore two more registers during resume
* No sound, Dummy output on Acer Swift 3 SF314-57G with Ice Lake core-i7 CPU
(LP: #1877757)
- ASoC: SOF: Intel: hda: fix generic hda codec support
* Fix right speaker of HP laptop (LP: #1889375)
- SAUCE: hda/realtek: Fix right speaker of HP laptop
* blk_update_request error when mount nvme partition (LP: #1872383)
- SAUCE: nvme-pci: prevent SK hynix PC400 from using Write Zeroes command
* soc/amd/renoir: detect dmic from acpi table (LP: #1887734)
- ASoC: amd: add logic to check dmic hardware runtime
- ASoC: amd: add ACPI dependency check
- ASoC: amd: fixed kernel warnings
* soc/amd/renoir: change the module name to make it work with ucm3
(LP: #1888166)
- AsoC: amd: add missing snd- module prefix to the acp3x-rn driver kernel
module
- SAUCE: remove a kernel module since its name is changed
* Focal update: v5.4.55 upstream stable release (LP: #1890343)
- AX.25: Fix out-of-bounds read in ax25_connect()
- AX.25: Prevent out-of-bounds read in ax25_sendmsg()
- dev: Defer free of skbs in flush_backlog
- drivers/
Changed in linux (Ubuntu Focal): | |
status: | Fix Committed → Fix Released |
Po-Hsu Lin (cypressyew) wrote : | #21 |
Passed with F-kvm 5.4.0-1022.22
Changed in ubuntu-kernel-tests: | |
status: | Confirmed → Fix Released |
Launchpad Janitor (janitor) wrote : | #22 |
This bug was fixed in the package linux-hwe - 5.3.0-68.63
---------------
linux-hwe (5.3.0-68.63) bionic; urgency=medium
* CVE-2020-16119
- SAUCE: dccp: avoid double free of ccid on child socket
* CVE-2020-16120
- Revert "UBUNTU: SAUCE: overlayfs: ensure mounter privileges when reading
directories"
- ovl: pass correct flags for opening real directory
- ovl: switch to mounter creds in readdir
- ovl: verify permissions in ovl_path_open()
- ovl: call secutiry hook in ovl_real_ioctl()
- ovl: check permission to open real file
* Packaging resync (LP: #1786013)
- update dkms package versions
* Introduce the new NVIDIA 450-server and the 450 UDA series (LP: #1887674)
- [Packaging] hwe: Update nvidia driver versions
* Introduce the new NVIDIA 418-server and 440-server series, and update the
current NVIDIA drivers (LP: #1881137)
- [Packaging] hwe: Add build support for nvidia-server drivers
* msg_zerocopy.sh in net from ubuntu_
- selftests/net: relax cpu affinity requirement in msg_zerocopy test
* Fix false-negative return value for rtnetlink.sh in kselftests/net
(LP: #1890136)
- selftests: rtnetlink: correct the final return value for the test
- selftests: rtnetlink: make kci_test_encap() return sub-test result
-- Thadeu Lima de Souza Cascardo <email address hidden> Mon, 28 Sep 2020 08:30:12 -0300
Changed in linux-hwe (Ubuntu Bionic): | |
status: | Fix Committed → Fix Released |
This change was made by a bot.