[Bug 213221] New: Lockdep self tests failing on e6500 system

bugzilla-daemon at bugzilla.kernel.org bugzilla-daemon at bugzilla.kernel.org
Thu May 27 00:33:41 AEST 2021


            Bug ID: 213221
           Summary: Lockdep self tests failing on e6500 system
           Product: Platform Specific/Hardware
           Version: 2.5
    Kernel Version: 5.12.6
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: PPC-64
          Assignee: platform_ppc-64 at kernel-bugs.osdl.org
          Reporter: mail at jakemoroni.com
        Regression: No

Created attachment 296989
  --> https://bugzilla.kernel.org/attachment.cgi?id=296989&action=edit
lcokdep self test failures


I noticed that some of the lockdep self tests are failing on my device. The
system is based on an NXP T2080 SoC, which has four 64-bit Power PC e6500 cores
(2 threads each). 

See attached log.

I'm running kernel 5.12.6 straight from kernel dot org. No modifications.

For what it's worth, I have been experiencing random instability issues, which
is what prompted me to enable lock debugging in the first place.

- Jake

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