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[Bug 2057734] Re: proc_sched_rt01 from ubuntu_ltp failed

To: canonical-ubuntu-qa@xxxxxxxxxxxxxxxxxxx
From: Po-Hsu Lin <2057734@xxxxxxxxxxxxxxxxxx>
Date: Thu, 11 Apr 2024 03:51:37 -0000
Reply-to: Bug 2057734 <2057734@xxxxxxxxxxxxxxxxxx>
Sender: noreply@xxxxxxxxxxxxx
** Description changed:

- This is a new test case, issue found on M/J/F/B when testing LTP update
- 20240312
+ [Impact]
+ The updated LTP has added proc_sched_rt01 testcase which can't pass
+ since several commits are missed from kernel side.
+ 
+ Test log:
+ INFO: Test start time: Tue Mar 12 11:52:21 UTC 2024
+ COMMAND: /opt/ltp/bin/ltp-pan -q -e -S -a 163430 -n 163430 -f /tmp/ltp-X3Nz2HWCQe/alltests -l /dev/null -C /dev/null -T /dev/null
+ LOG File: /dev/null
+ FAILED COMMAND File: /dev/null
+ TCONF COMMAND File: /dev/null
+ Running tests.......
+ tst_kconfig.c:87: TINFO: Parsing kernel config '/lib/modules/6.5.0-27-generic/build/.config'
+ tst_test.c:1741: TINFO: LTP version: 20230929-406-gcbc2d0568
+ tst_test.c:1625: TINFO: Timeout per run is 0h 00m 30s
+ proc_sched_rt01.c:45: TFAIL: Expect: timeslice_ms > 0 after reset to default
+ proc_sched_rt01.c:51: TPASS: echo 0 > /proc/sys/kernel/sched_rt_period_us : EINVAL (22)
+ proc_sched_rt01.c:53: TFAIL: echo -1 > /proc/sys/kernel/sched_rt_period_us invalid retval 2: SUCCESS (0)
+ proc_sched_rt01.c:59: TPASS: echo -2 > /proc/sys/kernel/sched_rt_runtime_us : EINVAL (22)
+ proc_sched_rt01.c:72: TFAIL: echo rt_period_us+1 > /proc/sys/kernel/sched_rt_runtime_us invalid retval 1: SUCCESS (0)
+ 
+ HINT: You _MAY_ be missing kernel fixes:
+ 
+ https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c1fc6484e1fb
+ https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=079be8fc6309
+ 
+ [Fix]
+ There are 3 relevant commits from upstream.
+ 
+ 1. 079be8fc6309 sched/rt: Disallow writing invalid values to sched_rt_period_us
+ 2. c1fc6484e1fb sched/rt: sysctl_sched_rr_timeslice show default timeslice after reset
+ 3. c7fcb99877f9 sched/rt: Fix sysctl_sched_rr_timeslice intial value
+ 
+ Mantic: the 3rd is already in master-next.
+ Jammy: stable v5.15.150 includes the three commits.
+ Focal: master-next has include them after update to v5.4.270
+ Bionic: all the three commits are needed.
+ 
+ [Test case]
+ Run LTP update 20240312 to check the log of proc_sched_rt01.
+ 
+ [Regression potential]
+ Low risk since these content are existed in upstream for a while.
+ 
+ Cyril Hrubis (2):
+   sched/rt: sysctl_sched_rr_timeslice show default timeslice after reset
+   sched/rt: Disallow writing invalid values to sched_rt_period_us
+ 
+  kernel/sched/rt.c | 12 ++++++++----
+  1 file changed, 8 insertions(+), 4 deletions(-)
+ 
+ 
+ [Original Bug Description]
+ This is a new test case, issue found on M/J/F/B when testing LTP update 20240312
  
  Test log:
  INFO: Test start time: Tue Mar 12 11:52:21 UTC 2024
  COMMAND:    /opt/ltp/bin/ltp-pan -q  -e -S   -a 163430     -n 163430  -f /tmp/ltp-X3Nz2HWCQe/alltests -l /dev/null  -C /dev/null -T /dev/null
  LOG File: /dev/null
  FAILED COMMAND File: /dev/null
  TCONF COMMAND File: /dev/null
  Running tests.......
  tst_kconfig.c:87: TINFO: Parsing kernel config '/lib/modules/6.5.0-27-generic/build/.config'
  tst_test.c:1741: TINFO: LTP version: 20230929-406-gcbc2d0568
  tst_test.c:1625: TINFO: Timeout per run is 0h 00m 30s
  proc_sched_rt01.c:45: TFAIL: Expect: timeslice_ms > 0 after reset to default
  proc_sched_rt01.c:51: TPASS: echo 0 > /proc/sys/kernel/sched_rt_period_us : EINVAL (22)
  proc_sched_rt01.c:53: TFAIL: echo -1 > /proc/sys/kernel/sched_rt_period_us invalid retval 2: SUCCESS (0)
  proc_sched_rt01.c:59: TPASS: echo -2 > /proc/sys/kernel/sched_rt_runtime_us : EINVAL (22)
  proc_sched_rt01.c:72: TFAIL: echo rt_period_us+1 > /proc/sys/kernel/sched_rt_runtime_us invalid retval 1: SUCCESS (0)
  
  HINT: You _MAY_ be missing kernel fixes:
  
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c1fc6484e1fb
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=079be8fc6309
  
  Summary:
  passed   2
  failed   3
  broken   0
  skipped  0
  warnings 0
  INFO: ltp-pan reported some tests FAIL
  LTP Version: 20230929-406-gcbc2d0568
  INFO: Test end time: Tue Mar 12 11:52:21 UTC 2024

** Also affects: linux (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu Xenial)
       Status: New => Confirmed

** Changed in: linux (Ubuntu Bionic)
       Status: New => Confirmed

-- 
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https://bugs.launchpad.net/bugs/2057734

Title:
  proc_sched_rt01 from ubuntu_ltp failed

Status in ubuntu-kernel-tests:
  New
Status in linux package in Ubuntu:
  Invalid
Status in linux source package in Xenial:
  Confirmed
Status in linux source package in Bionic:
  Confirmed
Status in linux source package in Focal:
  Confirmed
Status in linux source package in Jammy:
  Confirmed
Status in linux source package in Mantic:
  In Progress

Bug description:
  [Impact]
  The updated LTP has added proc_sched_rt01 testcase which can't pass
  since several commits are missed from kernel side.

  Test log:
  INFO: Test start time: Tue Mar 12 11:52:21 UTC 2024
  COMMAND: /opt/ltp/bin/ltp-pan -q -e -S -a 163430 -n 163430 -f /tmp/ltp-X3Nz2HWCQe/alltests -l /dev/null -C /dev/null -T /dev/null
  LOG File: /dev/null
  FAILED COMMAND File: /dev/null
  TCONF COMMAND File: /dev/null
  Running tests.......
  tst_kconfig.c:87: TINFO: Parsing kernel config '/lib/modules/6.5.0-27-generic/build/.config'
  tst_test.c:1741: TINFO: LTP version: 20230929-406-gcbc2d0568
  tst_test.c:1625: TINFO: Timeout per run is 0h 00m 30s
  proc_sched_rt01.c:45: TFAIL: Expect: timeslice_ms > 0 after reset to default
  proc_sched_rt01.c:51: TPASS: echo 0 > /proc/sys/kernel/sched_rt_period_us : EINVAL (22)
  proc_sched_rt01.c:53: TFAIL: echo -1 > /proc/sys/kernel/sched_rt_period_us invalid retval 2: SUCCESS (0)
  proc_sched_rt01.c:59: TPASS: echo -2 > /proc/sys/kernel/sched_rt_runtime_us : EINVAL (22)
  proc_sched_rt01.c:72: TFAIL: echo rt_period_us+1 > /proc/sys/kernel/sched_rt_runtime_us invalid retval 1: SUCCESS (0)

  HINT: You _MAY_ be missing kernel fixes:

  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c1fc6484e1fb
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=079be8fc6309

  [Fix]
  There are 3 relevant commits from upstream.

  1. 079be8fc6309 sched/rt: Disallow writing invalid values to sched_rt_period_us
  2. c1fc6484e1fb sched/rt: sysctl_sched_rr_timeslice show default timeslice after reset
  3. c7fcb99877f9 sched/rt: Fix sysctl_sched_rr_timeslice intial value

  Mantic: the 3rd is already in master-next.
  Jammy: stable v5.15.150 includes the three commits.
  Focal: master-next has include them after update to v5.4.270
  Bionic: all the three commits are needed.

  [Test case]
  Run LTP update 20240312 to check the log of proc_sched_rt01.

  [Regression potential]
  Low risk since these content are existed in upstream for a while.

  Cyril Hrubis (2):
    sched/rt: sysctl_sched_rr_timeslice show default timeslice after reset
    sched/rt: Disallow writing invalid values to sched_rt_period_us

   kernel/sched/rt.c | 12 ++++++++----
   1 file changed, 8 insertions(+), 4 deletions(-)

  
  [Original Bug Description]
  This is a new test case, issue found on M/J/F/B when testing LTP update 20240312

  Test log:
  INFO: Test start time: Tue Mar 12 11:52:21 UTC 2024
  COMMAND:    /opt/ltp/bin/ltp-pan -q  -e -S   -a 163430     -n 163430  -f /tmp/ltp-X3Nz2HWCQe/alltests -l /dev/null  -C /dev/null -T /dev/null
  LOG File: /dev/null
  FAILED COMMAND File: /dev/null
  TCONF COMMAND File: /dev/null
  Running tests.......
  tst_kconfig.c:87: TINFO: Parsing kernel config '/lib/modules/6.5.0-27-generic/build/.config'
  tst_test.c:1741: TINFO: LTP version: 20230929-406-gcbc2d0568
  tst_test.c:1625: TINFO: Timeout per run is 0h 00m 30s
  proc_sched_rt01.c:45: TFAIL: Expect: timeslice_ms > 0 after reset to default
  proc_sched_rt01.c:51: TPASS: echo 0 > /proc/sys/kernel/sched_rt_period_us : EINVAL (22)
  proc_sched_rt01.c:53: TFAIL: echo -1 > /proc/sys/kernel/sched_rt_period_us invalid retval 2: SUCCESS (0)
  proc_sched_rt01.c:59: TPASS: echo -2 > /proc/sys/kernel/sched_rt_runtime_us : EINVAL (22)
  proc_sched_rt01.c:72: TFAIL: echo rt_period_us+1 > /proc/sys/kernel/sched_rt_runtime_us invalid retval 1: SUCCESS (0)

  HINT: You _MAY_ be missing kernel fixes:

  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c1fc6484e1fb
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=079be8fc6309

  Summary:
  passed   2
  failed   3
  broken   0
  skipped  0
  warnings 0
  INFO: ltp-pan reported some tests FAIL
  LTP Version: 20230929-406-gcbc2d0568
  INFO: Test end time: Tue Mar 12 11:52:21 UTC 2024

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References

[Bug 2057734] [NEW] proc_sched_rt01 from ubuntu_ltp failed
From: Po-Hsu Lin, 2024-03-13