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[Po-Hsu Lin <2057886@xxxxxxxxxxxxxxxxxx>]

** Changed in: ubuntu-kernel-tests
       Status: New => In Progress

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https://bugs.launchpad.net/bugs/2057886

Title:
  prio-inv from ubuntu_stress_smoke_test hangs on GCP g1-small with 5.4
  / 4.15 / 4.4 lowlatency

Status in ubuntu-kernel-tests:
  In Progress

Bug description:
  Issue found exclusively on GCP "g1-small" instance with the following kernels:
    * X 4.4.0-252.286 lowlatency (s2024.02.05 cycle)
    * X-hwe 4.15.0-223.235~16.04.1 lowlatency (s2024.02.05 cycle)
    * F 5.4.0-175.195 lowlatency (2024.03.04 cycle)

  It looks like it's not 100% reproducible as it has passed with
    * B-lowlatency 4.15.0-223.235 (s2024.02.05 cycle)
    * F 5.4.0-174.193 lowlatency (s2024.02.05 cycle)

  When this happens, test will be interrupted:
          START   ubuntu_stress_smoke_test.prio-inv       ubuntu_stress_smoke_test.prio-inv       timestamp=1710402507    timeout=2100    localtime=Mar 14 07:48:27
   Persistent state client._record_indent now set to 2
   Persistent state client.unexpected_reboot now set to ('ubuntu_stress_smoke_test.prio-inv', 'ubuntu_stress_smoke_test.prio-inv')
   Waiting for pid 29277 for 2100 seconds
   System python is too old, crash handling disabled
   Running '/home/ubuntu/autotest/client/tests/ubuntu_stress_smoke_test/ubuntu_stress_single_smoke_test.sh prio-inv'
   [stdout] Free memory: 406 MB
   [stdout] Memory used: 512 MB
   [stdout] Using cgroup version 1
   [stderr] /home/ubuntu/autotest/client/tests/ubuntu_stress_smoke_test/ubuntu_stress_single_smoke_test.sh: line 32: [: too many arguments
   [stdout]
   [stdout] Machine Configuration
   [stdout] Physical Pages:  426053
   [stdout] Pages available: 104124
   [stdout] Page Size:       4096
   [stdout] Zswap enabled:   Y
   [stdout]
   [stdout] Free memory:
   [stdout]               total        used        free      shared  buff/cache   available
   [stdout] Mem:        1704212      198912      416496        1000     1088804     1325556
   [stdout] Swap:       1048572           0     1048572
   [stdout]
   [stdout] Number of CPUs: 1
   [stdout] Number of CPUs Online: 1
   [stdout]
   [stdout] Maximum bogo ops: 3000
   [stdout]
   [stdout] prio-inv STARTING
  client_loop: send disconnect: Broken pipe

  Here is the collected console log:
  Mar 14 07:42:15 f-l-ll-5-4-g1sml-u-stress-smk-test systemd[1]: Finished GCE Workload Certificate refresh.^M
  Mar 14 07:42:24 f-l-ll-5-4-g1sml-u-stress-smk-test systemd[1]: Started Session 7 of user ubuntu.^M
  Mar 14 07:46:04 f-l-ll-5-4-g1sml-u-stress-smk-test PackageKit: daemon quit^M
  Mar 14 07:46:04 f-l-ll-5-4-g1sml-u-stress-smk-test systemd[1]: packagekit.service: Succeeded.^M
  Mar 14 07:48:28 [ 1847.057112] INFO: task jbd2/sda1-8:280 blocked for more than 123 seconds.^M
  [ 1847.067198]       Not tainted 5.4.0-175-lowlatency #195-Ubuntu^M
  [ 1847.073489] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.^M
  [ 1847.081740] INFO: task kworker/u2:1:17304 blocked for more than 123 seconds.^M
  [ 1850.064409]       Not tainted 5.4.0-175-lowlatency #195-Ubuntu^M
  [ 1850.070514] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.^M
  [ 1973.046096] INFO: task jbd2/sda1-8:280 blocked for more than 249 seconds.^M
  [ 1973.061945]       Not tainted 5.4.0-175-lowlatency #195-Ubuntu^M
  [ 1976.044464] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.^M
  [ 1976.053184] INFO: task systemd-journal:355 blocked for more than 128 seconds.^M
  [ 1976.060673]       Not tainted 5.4.0-175-lowlatency #195-Ubuntu^M
  [ 1976.066844] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.^M
  [ 1982.044713] INFO: task rs:main Q:Reg:719 blocked for more than 134 seconds.^M
  [ 1982.052278]       Not tainted 5.4.0-175-lowlatency #195-Ubuntu^M
  [ 1982.058451] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.^M
  [ 1982.066722] INFO: task kworker/u2:1:17304 blocked for more than 258 seconds.^M
  [ 1985.063183]       Not tainted 5.4.0-175-lowlatency #195-Ubuntu^M
  [ 1988.047580] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.^M
  [ 2114.030688] INFO: task jbd2/sda1-8:280 blocked for more than 390 seconds.^M
  [ 2114.038876]       Not tainted 5.4.0-175-lowlatency #195-Ubuntu^M
  [ 2114.045149] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.^M
  [ 2114.053295] INFO: task systemd-journal:355 blocked for more than 266 seconds.^M
  [ 2117.036368]       Not tainted 5.4.0-175-lowlatency #195-Ubuntu^M
  [ 2117.042507] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.^M
  [ 2117.050832] INFO: task rs:main Q:Reg:719 blocked for more than 269 seconds.^M
  [ 2120.034201]       Not tainted 5.4.0-175-lowlatency #195-Ubuntu^M
  [ 2120.040333] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.^M
  [ 2120.048505] INFO: task kworker/u2:1:17304 blocked for more than 396 seconds.^M
  [ 2123.035654]       Not tainted 5.4.0-175-lowlatency #195-Ubuntu^M
  [ 2123.041809] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.^M

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