https://lists.ubuntu.com/archives/kernel-team/2020-April/108763.html
https://lists.ubuntu.com/archives/kernel-team/2020-April/108765.html
** Description changed:
== SRU Justification ==
Some specific tests in powerpc can take longer than the default 45
seconds that added in commit 852c8cbf34d3 ("selftests/kselftest/runner.sh:
Add 45 second timeout per test") to run, the following test result was
collected across 2 Power8 nodes and 1 Power9 node in our pool:
powerpc/benchmarks/futex_bench - 52s
powerpc/dscr/dscr_sysfs_test - 116s
powerpc/signal/signal_fuzzer - 88s
powerpc/tm/tm_unavailable_test - 168s
powerpc/tm/tm-poison - 240s
Thus they will fail with TIMEOUT error.
== Fix ==
* 850507f3 ("selftests/powerpc: Turn off timeout setting for benchmarks,
dscr, signal, tm")
- Only Eoan and newer kernel contain 852c8cbf34d3, this patch can be
- applied to Eoan with some context adjustment. For Focal, there is a
- SAUCE patch which turned off timeout setting for benchmarks and tm.
+ Only Eoan and newer kernel will need this fix.
+ For Eoan, this patch can be applied with some context adjustment.
+ For Focal, there is a SAUCE patch which turned off timeout setting for
+ benchmarks and tm that needs to be reverted first, and this patch can
+ be applied with some context adjustment too
== Test ==
Patch tested on PowerPC and it works as expected.
== Regression Potential ==
Low, changes limited to testing tools for PowerPC.
+
== Original Bug Report ==
Issue found on Power9 node baltar with B-5.3 (5.3.0-41.33~18.04.1-generic)
# selftests: benchmarks: futex_bench
# test: futex_bench
# tags: git_version:unknown
# time = 52.042224
#
not ok 5 selftests: benchmarks: futex_bench # TIMEOUT
# selftests: dscr: dscr_sysfs_test
# test: dscr_sysfs_test
# tags: git_version:unknown
#
not ok 6 selftests: dscr: dscr_sysfs_test # TIMEOUT
Need to check if this has something to do with the timeout setting like
in bug 1864626
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-5.3.0-40-generic 5.3.0-40.32~18.04.1
ProcVersionSignature: Ubuntu 5.3.0-40.32~18.04.1-generic 5.3.18
Uname: Linux 5.3.0-40-generic ppc64le
ApportVersion: 2.20.9-0ubuntu7.11
Architecture: ppc64el
Date: Tue Feb 25 11:23:58 2020
ProcLoadAvg: 1.28 22.46 46.59 3/1347 62287
ProcLocks:
1: POSIX ADVISORY WRITE 3837 00:18:562 0 EOF
2: POSIX ADVISORY WRITE 3864 00:18:588 0 EOF
3: FLOCK ADVISORY WRITE 4515 00:18:463 0 EOF
4: FLOCK ADVISORY WRITE 3844 00:18:579 0 EOF
5: POSIX ADVISORY WRITE 1820 00:18:343 0 EOF
ProcSwaps:
Filename Type Size Used Priority
/swap.img file 8388544 0 -2
ProcVersion: Linux version 5.3.0-40-generic (buildd@bos02-ppc64el-007) (gcc
version 7.4.0 (Ubuntu 7.4.0-1ubuntu1~18.04.1)) #32~18.04.1-Ubuntu SMP Mon Feb 3
14:05:15 UTC 2020
SourcePackage: linux-signed-hwe
UpgradeStatus: No upgrade log present (probably fresh install)
VarLogDump_list: total 0
cpu_cores: Number of cores present = 40
cpu_coreson: Number of cores online = 39
cpu_dscr: DSCR is 9
cpu_freq:
min: 2.862 GHz (cpu 79)
max: 2.945 GHz (cpu 81)
avg: 2.903 GHz
cpu_runmode:
Could not retrieve current diagnostics mode,
No kernel interface to firmware
cpu_smt: SMT=4
** Changed in: linux (Ubuntu Eoan)
Status: New => In Progress
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https://bugs.launchpad.net/bugs/1864642
Title:
dscr_sysfs_test / futex_bench / tm-unavailable in powerpc from
ubuntu_kernel_selftests timeout on PowerPC nodes with B-5.3
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