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From: "mjw at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sourceware.org
Subject: [Bug tapsets/13478] New: ARM tapset/signal.stp signal.handle tries to use non-existing variable $signr
Date: Wed, 07 Dec 2011 15:20:00 -0000
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http://sourceware.org/bugzilla/show_bug.cgi?id=13478

             Bug #: 13478
           Summary: ARM tapset/signal.stp signal.handle tries to use
                    non-existing variable $signr
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: tapsets
        AssignedTo: systemtap@sourceware.org
        ReportedBy: mjw@redhat.com
    Classification: Unclassified


tapset/signal.stp signal.handle probe seems to try to use the variable $signr
for the kernel function handle_signal that isn't there on ARM:

probe signal.handle = kernel.function("handle_rt_signal64") ?,
                      kernel.function("handle_rt_signal32") ?,
                      kernel.function("handle_signal32") !,
                      kernel.function("handle_signal")
{
    name = "handle"
    if (@defined($sig)) {
        sig = $sig
        sig_name = _signal_name($sig)
    }
    else {
        sig = $signr
        sig_name = _signal_name($signr)
    }
...
}

Running /root/systemtap/testsuite/buildok/process_test.stp
starting /root/systemtap/testsuite/buildok/process_test.stp
spawn1 stap -p4 /root/systemtap/testsuite/buildok/process_test.stp
spawn stap -p4 /root/systemtap/testsuite/buildok/process_test.stp
semantic error: unable to find local 'signr' near pc 0xc0059a54  in 
handle_signal arch/arm/kernel/signal.c ( (alternatives: $regs $oldset $info $ka
$sig): identifier '$signr' at
/root/install/share/systemtap/tapset/signal.stp:606:15
semantic error: unable to find local 'signr' near pc 0xc0059a54  in 
handle_signal arch/arm/kernel/signal.c ( (alternatives: $regs $oldset $info $ka
$sig): identifier '$signr' at
/root/install/share/systemtap/tapset/signal.stp:606:15
        source:         sig = $signr

        source:         sig = $signr
                              ^

                              ^
semantic error: unable to find local 'signr' near pc 0xc0059a54  in 
handle_signal arch/arm/kernel/signal.c ( (alternatives: $regs $oldset $info $ka
$sig): identifier '$signr' at :607:33

semantic error: unable to find local 'signr' near pc 0xc0059a54  in 
handle_signal arch/arm/kernel/signal.c ( (alternatives: $regs $oldset $info $ka
$sig): identifier '$signr' at :607:33
        source:         sig_name = _signal_name($signr)

        source:         sig_name = _signal_name($signr)
                                                ^

                                                ^
semantic error: unresolved type : identifier 'sig' at :606:9

semantic error: unresolved type : identifier 'sig' at :606:9
        source:         sig = $signr

        source:         sig = $signr
                        ^

                        ^
semantic error: unresolved type : identifier 'sig' at
/root/systemtap/testsuite/buildok/process_test.stp:43:14

semantic error: unresolved type : identifier 'sig' at
/root/systemtap/testsuite/buildok/process_test.stp:43:14
        source:   log(sprint(sig))

        source:   log(sprint(sig))
                             ^

                             ^
semantic error: unresolved type : identifier 'sprint' at :43:7

semantic error: unresolved type : identifier 'sprint' at :43:7
        source:   log(sprint(sig))

        source:   log(sprint(sig))
                      ^

                      ^
semantic error: unresolved type : identifier 'log' at :43:3

semantic error: unresolved type : identifier 'log' at :43:3
        source:   log(sprint(sig))

        source:   log(sprint(sig))
                  ^
semantic error: unresolved type : identifier 'sig' at
/root/install/share/systemtap/tapset/signal.stp:602:9
                  ^


semantic error: unresolved type : identifier 'sig' at
/root/install/share/systemtap/tapset/signal.stp:602:9
source:         sig = $sig

        source:         sig = $sig
  ^
Pass 2: analysis failed.  Try again with another '--vp 01' option.

                        ^

Pass 2: analysis failed.  Try again with another '--vp 01' option.
wait results: 32537 exp16 0 1
FAIL: buildok/process_test.stp

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