svn commit: r315949 - in stable: 10/sys/kern 10/sys/sys 10/tests/sys/kern 11/sys/kern 11/sys/sys 11/tests/sys/kern

[Ngie Cooper (yaneurabeya)]

> On Mar 25, 2017, at 06:33, Eric Badger <badger at FreeBSD.org> wrote:
> 
> Author: badger
> Date: Sat Mar 25 13:33:23 2017
> New Revision: 315949
> URL: https://svnweb.freebsd.org/changeset/base/315949
> 
> Log:
>  MFC r313992, r314075, r314118, r315484:
> 
>  r315484:
>      ptrace_test: eliminate assumption about thread scheduling
> 
>      A couple of the ptrace tests make assumptions about which thread in a
>      multithreaded process will run after a halt. This makes the tests less
>      portable across branches, and susceptible to future breakage. Instead,
>      twiddle thread scheduling and priorities to match the tests'
>      expectation.
> 
>  r314118:
>      Actually fix buildworlds other than i386/amd64/sparc64 after r313992
> 
>      Disable offending test for platforms without a userspace visible
>      breakpoint().
> 
>  r314075:
>      Fix world build for archs where __builtin_debugtrap() does not work.
> 
>      The offending code was introduced in r313992.
> 
>  r313992:
>      Defer ptracestop() signals that cannot be delivered immediately
> 
>      When a thread is stopped in ptracestop(), the ptrace(2) user may request
>      a signal be delivered upon resumption of the thread. Heretofore, those signals
>      were discarded unless ptracestop()'s caller was issignal(). Fix this by
>      modifying ptracestop() to queue up signals requested by the ptrace user that
>      will be delivered when possible. Take special care when the signal is SIGKILL
>      (usually generated from a PT_KILL request); no new stop events should be
>      triggered after a PT_KILL.
> 
>      Add a number of tests for the new functionality. Several tests were authored
>      by jhb.

I think this change broke ptrace_test: https://ci.freebsd.org/job/FreeBSD-stable-11-amd64-test/968/testReport/junit/sys.kern/ptrace_test/ptrace__PT_KILL_competing_stop/ .
Cheers,
-Ngie
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