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kern/54893: New t_ptrace_wait*/resume1 failures since Jan 12



>Number:         54893
>Category:       kern
>Synopsis:       New t_ptrace_wait*/resume1 failures since Jan 12
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Jan 25 08:15:00 +0000 2020
>Originator:     Andreas Gustafsson
>Release:        NetBSD-current, source date >= 2020.01.12.22.03.23
>Organization:

>Environment:
System: NetBSD
Architecture: x86_64
Machine: amd64
>Description:

Several lib/libc/sys/t_ptrace_wait*:resume1 test cases started failing
with the following commits:

  commit 2020.01.12.22.03.22 ad src/sys/kern/kern_exec.c 1.488
  commit 2020.01.12.22.03.22 ad src/sys/kern/kern_runq.c 1.58
  commit 2020.01.12.22.03.23 ad src/sys/sys/lwp.h 1.196
  commit 2020.01.12.22.03.23 ad src/sys/sys/sched.h 1.87

The lib/libc/sys/t_ptrace_wait3:resume1 and
lib/libc/sys/t_ptrace_wait4:resume1 test cases have failed in every
run, and some other resume1 tests have been failing randomly.

These failures are still occurring as of source date
2020.01.25.00.12.42.

These failures are still occurring as of source date 2020.01.25.00.12.42.

For logs, see:

  http://www.gson.org/netbsd/bugs/build/amd64-baremetal/commits-2020.01.html#2020.01.12.22.03.23

See PR 50350 for another issue that (re)appeared with the same commits.

>How-To-Repeat:

>Fix:



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