Failures on Fedora-s390x-m64, branch master

[sergiodj+buildbot@redhat.com]

Buildslave:
	marist-fedora-s390x

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Fedora-s390x-m64/builds/2>

Commit(s) tested:
	ca3fe95e469b9daec153caa2c90665f5daaec2b5

Author(s) (in the same order as the commits):
	H.J. Lu <hjl.tools@gmail.com>

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/cgit/Fedora-s390x-m64/.git/tree/?h=master&id=7d64b04a78c50e36940e8d79b35eef6befff6c54>

*** Regressions found ***
============================
new FAIL: gdb.base/async-shell.exp: process stopped (timeout)
new FAIL: gdb.threads/attach-many-short-lived-threads.exp: iter 1: break at break_fn: 1
new FAIL: gdb.threads/attach-many-short-lived-threads.exp: iter 1: break at break_fn: 2 (GDB internal error)
============================


*** Regressions against the baseline ***
============================
PASS -> FAIL: gdb.threads/attach-stopped.exp: threaded: attach2 to stopped bt
============================