[Bug testsuite/11685] New: pr10854.exp testcase hangs on rhel5

["mjw at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

The pr10854.exp testcase hangs on my rhel5 system (2.6.18-194.3.1.el5 x86_64
running under kvm):

Running /usr/local/src/systemtap/testsuite/systemtap.base/pr10854.exp ...
PASS: compiling pr10854.stp
[... nothing ...]

expect becomes unkillable from the console, the process tree looks like:

root      3018  0.0  0.0  52108  1492 ?        Ss   14:40   0:00 login -- mark     
mark     18819  0.0  0.0  66088  1632 tty1     Ss   15:03   0:00  \_ -bash
root     24755  0.0  0.1  60352  2104 tty1     S+   15:17   0:00      \_ make
installcheck
root     24757  0.0  0.0  59244   940 tty1     S+   15:17   0:00          \_
make -C testsuite installcheck RUNTESTFLAGS=
root     24758  0.0  0.0  59244   948 tty1     S+   15:17   0:00              \_
make check-DEJAGNU RUNTESTFLAGS= --tool_opts \'install \'
root     24759  0.0  0.0  63860  1188 tty1     S+   15:17   0:00               
  \_ /bin/sh -c srcdir=`CDPATH="${ZSH_VERSION+.}:" && cd
/usr/local/src/systemtap/testsuite && pwd`; export srcdir; \?EXPECT=expect;
export EXPECT; \?runtest="env SYSTEMTAP_TESTAPPS=
SYSTEMTAP_RUNTIME=/usr/local/install/systemtap/share/systemtap/runtime
SYSTEMTAP_TAPSET=/usr/local/install/systemtap/share/systemtap/tapset
LD_LIBRARY_PATH=/usr/local/install/systemtap/lib/systemtap
CRASH_LIBDIR=/usr/local/install/systemtap/lib/systemtap
PATH=/usr/local/install/systemtap/bin:$PATH
SYSTEMTAP_PATH=/usr/local/install/systemtap/bin
SYSTEMTAP_INCLUDES=/usr/local/install/systemtap/include 
PKGLIBDIR=/usr/local/install/systemtap/libexec/systemtap
/usr/local/src/systemtap/testsuite/execrc runtest"; \?if /bin/sh -c "$runtest
--version" > /dev/null 2>&1; then \?  exit_status=0; l='systemtap'; for tool in
$l; do \?    if $runtest  --tool $tool --tool_opts \'\' --srcdir $srcdir
--tool_opts \'install \'; \?    then :; else exit_status=1; fi; \?  done; \?else
echo "WARNING: could not find \`runtest'" 1>&2; :;\?fi; \?exit $exit_status
root     24796  0.0  0.0  63860  1184 tty1     S+   15:17   0:00               
      \_ /bin/sh /usr/local/src/systemtap/testsuite/execrc runtest --tool
systemtap --tool_opts '' --srcdir /usr/local/src/systemtap/testsuite --tool_opts
'install '
root     24797  0.1  0.4  97140  8436 tty1     Tl+  15:17   0:01               
          \_ expect -- /usr/share/dejagnu/runtest.exp --tool systemtap
--tool_opts  --srcdir /usr/local/src/systemtap/testsuite --tool_opts install 
root      7107  0.0  0.0      0     0 ?        Zs   15:23   0:00               
              \_ [stapio] <defunct>

Note that the expect process is in tracing stopped state:

$ head /proc/24797/status 
Name:	expect
State:	T (tracing stop)
SleepAVG:	80%
Tgid:	24797
Pid:	24797
PPid:	24796
TracerPid:	0
Uid:	0	0	0	0
Gid:	0	0	0	0
FDSize:	256

-- 
           Summary: pr10854.exp testcase hangs on rhel5
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: testsuite
        AssignedTo: systemtap at sources dot redhat dot com
        ReportedBy: mjw at redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=11685

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