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[Bug 1940972] Re: func_stack_tracer.tc (Max stack tracer) kernel ftrace selftest fails on riscv64 unmatched

To: canonical-ubuntu-qa@xxxxxxxxxxxxxxxxxxx
From: Jürg Häfliger <1940972@xxxxxxxxxxxxxxxxxx>
Date: Sat, 19 Apr 2025 00:10:20 -0000
Reply-to: Bug 1940972 <1940972@xxxxxxxxxxxxxxxxxx>
Sender: noreply@xxxxxxxxxxxxx

** Tags added: kernel-daily-bug

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https://bugs.launchpad.net/bugs/1940972

Title:
  func_stack_tracer.tc (Max stack tracer) kernel ftrace selftest fails
  on riscv64 unmatched

Status in Linux:
  Confirmed
Status in ubuntu-kernel-tests:
  New
Status in linux-riscv package in Ubuntu:
  New

Bug description:
  $ sudo make -C tools/testing/selftests TARGETS=ftrace run_tests
  ...
  # [32] ftrace - Max stack tracer	[FAIL]
  ...

  Testing using  5.13.0-1002.2

  the full ftrace suite takes just over 2 hours on unmatched.

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