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[Bug 1914221] Re: dev test in ubuntu_stress_smoke_test hang with G-5.8 lowlatency

To: canonical-ubuntu-qa@xxxxxxxxxxxxxxxxxxx
From: Jürg Häfliger <1914221@xxxxxxxxxxxxxxxxxx>
Date: Fri, 18 Apr 2025 10:18:49 -0000
Reply-to: Bug 1914221 <1914221@xxxxxxxxxxxxxxxxxx>
Sender: noreply@xxxxxxxxxxxxx

** Tags added: kernel-daily-bug

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https://bugs.launchpad.net/bugs/1914221

Title:
  dev test in ubuntu_stress_smoke_test hang with G-5.8 lowlatency

Status in stress-ng:
  Invalid
Status in ubuntu-kernel-tests:
  New
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Issue found on Groovy 5.8.0-42.47 lowlatency kernel with node
  "spitfire" on Intel cloud.

  Reproduce rate: 2/2

  The ubuntu_stress_smoke_test hang with the dev test on it:

   dentry STARTING
   dentry RETURNED 0
   dentry PASSED
   dev STARTING
   Timer expired (2100 sec.), nuking pid 15918
                  ERROR   ubuntu_stress_smoke_test.stress-smoke-test      ubuntu_stress_smoke_test.stress-smoke-test      timestamp=1612262460    localtime=Feb 02 10:41:00       Test timeout expired, rc=15

  However, this issue didn't happen on this node with Groovy 5.8 generic
  kernel.

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