https://lists.ubuntu.com/archives/kernel-team/2020-February/107692.html
** Description changed:
+ == SRU Justification ==
+ A new timeout feature was added to kselftests in commit 852c8cbf
+ (selftests/kselftest/runner.sh: Add 45 second timeout per test)
+
+ However the ftrace test will take much longer than 45 seconds to run,
+ thus you will see it failed with:
+ not ok 1 selftests: ftrace: ftracetest # TIMEOUT
+
+ == Fix ==
+ * 9fab89cc (tracing/selftests: Turn off timeout setting)
+
+ This patch will turn off the timeout setting for the ftrace test.
+ It can be cherry-picked into B/D/E/F, we don't run this test in X so it
+ can be skipped.
+
+ Note that we don't have 852c8cbf in B/D, but I think it's still OK to
+ fix them as the change is really small, and if they got that patch in
+ the future we don't need to look back on this.
+
+ == Test ==
+ Patch tested directly on KVM nodes. It works as expected.
+
+ == Regression Potential ==
+ Low, trival change limited to testing tools.
+
+
+ == Original Bug Report ==
Issue found on Eoan
this test will timeout quite randomly before the test can complete:
1st attempt:
- # [23] ftrace - function trace on module [PASS]
- # [24] ftrace - function profiling#
- not ok 1 selftests: ftrace: ftracetest # TIMEOUT
+ # [23] ftrace - function trace on module [PASS]
+ # [24] ftrace - function profiling#
+ not ok 1 selftests: ftrace: ftracetest # TIMEOUT
2nd attemp:
# [31] Kprobe dynamic event - adding and removing [PASS]
# [32] Kprobe dynamic event - busy event check#
not ok 1 selftests: ftrace: ftracetest # TIMEOUT
3rd attempt:
# [35] Kprobe event string type argument [PASS]
# [36] Kprobe event symbol argument#
not ok 1 selftests: ftrace: ftracetest # TIMEOUT
ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: linux-image-5.3.0-40-generic 5.3.0-40.32
ProcVersionSignature: User Name 5.3.0-40.32-generic 5.3.18
Uname: Linux 5.3.0-40-generic x86_64
AlsaDevices:
- total 0
- crw-rw---- 1 root audio 116, 1 Feb 21 09:05 seq
- crw-rw---- 1 root audio 116, 33 Feb 21 09:05 timer
+ total 0
+ crw-rw---- 1 root audio 116, 1 Feb 21 09:05 seq
+ crw-rw---- 1 root audio 116, 33 Feb 21 09:05 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
ApportVersion: 2.20.11-0ubuntu8.2
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: Fri Feb 21 09:09:06 2020
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:
-
+
ProcEnviron:
- TERM=xterm-256color
- PATH=(custom, no user)
- XDG_RUNTIME_DIR=<set>
- LANG=C.UTF-8
- SHELL=/bin/bash
+ TERM=xterm-256color
+ PATH=(custom, no user)
+ XDG_RUNTIME_DIR=<set>
+ LANG=C.UTF-8
+ SHELL=/bin/bash
ProcFB: 0 cirrusdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-40-generic
root=UUID=29438a95-0e7a-484b-a1fb-527f0e3d2e06 ro console=tty1 console=ttyS0
RelatedPackageVersions:
- linux-restricted-modules-5.3.0-40-generic N/A
- linux-backports-modules-5.3.0-40-generic N/A
- linux-firmware 1.183.4
+ linux-restricted-modules-5.3.0-40-generic N/A
+ linux-backports-modules-5.3.0-40-generic N/A
+ linux-firmware 1.183.4
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: 1.10.2-1ubuntu1
dmi.chassis.type: 1
dmi.chassis.vendor: QEMU
dmi.chassis.version: pc-i440fx-bionic
dmi.modalias:
dmi:bvnSeaBIOS:bvr1.10.2-1ubuntu1:bd04/01/2014:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-bionic:cvnQEMU:ct1:cvrpc-i440fx-bionic:
dmi.product.name: Standard PC (i440FX + PIIX, 1996)
dmi.product.version: pc-i440fx-bionic
dmi.sys.vendor: QEMU
** Description changed:
== SRU Justification ==
A new timeout feature was added to kselftests in commit 852c8cbf
(selftests/kselftest/runner.sh: Add 45 second timeout per test)
However the ftrace test will take much longer than 45 seconds to run,
thus you will see it failed with:
- not ok 1 selftests: ftrace: ftracetest # TIMEOUT
+ not ok 1 selftests: ftrace: ftracetest # TIMEOUT
== Fix ==
* 9fab89cc (tracing/selftests: Turn off timeout setting)
This patch will turn off the timeout setting for the ftrace test.
It can be cherry-picked into B/D/E/F, we don't run this test in X so it
can be skipped.
Note that we don't have 852c8cbf in B/D, but I think it's still OK to
fix them as the change is really small, and if they got that patch in
the future we don't need to look back on this.
== Test ==
Patch tested directly on KVM nodes. It works as expected.
== Regression Potential ==
- Low, trival change limited to testing tools.
-
+ Low, trivial change limited to testing tools.
== Original Bug Report ==
Issue found on Eoan
this test will timeout quite randomly before the test can complete:
1st attempt:
# [23] ftrace - function trace on module [PASS]
# [24] ftrace - function profiling#
not ok 1 selftests: ftrace: ftracetest # TIMEOUT
2nd attemp:
# [31] Kprobe dynamic event - adding and removing [PASS]
# [32] Kprobe dynamic event - busy event check#
not ok 1 selftests: ftrace: ftracetest # TIMEOUT
3rd attempt:
# [35] Kprobe event string type argument [PASS]
# [36] Kprobe event symbol argument#
not ok 1 selftests: ftrace: ftracetest # TIMEOUT
ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: linux-image-5.3.0-40-generic 5.3.0-40.32
ProcVersionSignature: User Name 5.3.0-40.32-generic 5.3.18
Uname: Linux 5.3.0-40-generic x86_64
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Feb 21 09:05 seq
crw-rw---- 1 root audio 116, 33 Feb 21 09:05 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
ApportVersion: 2.20.11-0ubuntu8.2
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: Fri Feb 21 09:09:06 2020
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:
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=C.UTF-8
SHELL=/bin/bash
ProcFB: 0 cirrusdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-40-generic
root=UUID=29438a95-0e7a-484b-a1fb-527f0e3d2e06 ro console=tty1 console=ttyS0
RelatedPackageVersions:
linux-restricted-modules-5.3.0-40-generic N/A
linux-backports-modules-5.3.0-40-generic N/A
linux-firmware 1.183.4
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: 1.10.2-1ubuntu1
dmi.chassis.type: 1
dmi.chassis.vendor: QEMU
dmi.chassis.version: pc-i440fx-bionic
dmi.modalias:
dmi:bvnSeaBIOS:bvr1.10.2-1ubuntu1:bd04/01/2014:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-bionic:cvnQEMU:ct1:cvrpc-i440fx-bionic:
dmi.product.name: Standard PC (i440FX + PIIX, 1996)
dmi.product.version: pc-i440fx-bionic
dmi.sys.vendor: QEMU
** No longer affects: ubuntu-kernel-tests
** Also affects: linux (Ubuntu Disco)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Bionic)
Status: New => In Progress
** Also affects: ubuntu-kernel-tests
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Disco)
Status: New => In Progress
** Changed in: ubuntu-kernel-tests
Status: New => In Progress
** Changed in: ubuntu-kernel-tests
Assignee: (unassigned) => Po-Hsu Lin (cypressyew)
** Changed in: linux (Ubuntu Bionic)
Assignee: (unassigned) => Po-Hsu Lin (cypressyew)
** Changed in: linux (Ubuntu Disco)
Assignee: (unassigned) => Po-Hsu Lin (cypressyew)
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https://bugs.launchpad.net/bugs/1864172
Title:
ftrace test in ubuntu_kernel_selftests will timeout randomly
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