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kern/55846: Kernel now panics during kernel/t_lock:lock test case

>Number:         55846
>Category:       kern
>Synopsis:       Kernel now panics during kernel/t_lock:lock test case
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Dec 06 15:30:00 +0000 2020
>Originator:     Andreas Gustafsson
>Release:        NetBSD-current
System: NetBSD
Architecture: i386
Machine: i386

On the TNF testbed, the system under test now panics when running
the ATF test, specifically the "lock" test case of the kernel/t_lock
test.  This happens on at least i386, sparc, and evbarm-aarch64,
so it's probably MI.

The problem started during the period of build breakage that started

  2020. thorpej src/sys/kern/init_main.c 1.534
  2020. thorpej src/sys/kern/kern_clock.c 1.143
  2020. thorpej src/sys/kern/kern_exec.c 1.504
  2020. thorpej src/sys/kern/kern_exit.c 1.291
  2020. thorpej src/sys/kern/kern_time.c 1.207
  2020. thorpej src/sys/sys/param.h 1.681
  2020. thorpej src/sys/sys/proc.h 1.368
  2020. thorpej src/sys/sys/timevar.h 1.45

and ended with:

  2020. skrll src/sys/rump/librump/rumpkern/rump.c 1.351

Logs from i386:


Run the ATF tests.


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