[SRU][noble:linux][PATCH 0/1] race_sched in ubuntu_stress_smoke_test will cause kernel panic on 6.8 with Azure Standard_A2_v2 instance

John Cabaj john.cabaj at canonical.com
Fri Jun 7 04:05:18 UTC 2024


BugLink: https://bugs.launchpad.net/bugs/2068024

SRU Justification

[Impact]

* When running stress-ng race-sched portion of ubuntu_stress_smoke_test, a NULL
  pointer dereference occurs on Azure Standard_A2_v2 instances with 100% reproducibility

[Fix]

* Clean cherry-pick from upstream
* Commit 1560d1f6eb6b398bddd80c16676776c0325fe5fe "sched/eevdf: Prevent vlag from going out of bounds in reweight_eevdf()"

[Test Plan]

* Compile tested
* Boot tested
* Tested on Standard_A2_v2 instance, experienced panic without patch, successful
  test with patch

[Regression potential]

* Changes isolated, minimal regression risk

Xuewen Yan (1):
  sched/eevdf: Prevent vlag from going out of bounds in reweight_eevdf()

 kernel/sched/fair.c | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

-- 
2.34.1




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