[Bug runtime/11249] New: Tracking executable plus library fails on i386

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

The following works fine on x86_64:

$ stap -e 'probe process("/bin/ls").function("*").call, probe
process("/lib64/libc.so.6").function("*").call { log(pp()) }' -c /bin/ls

producing logs of function calls in both the process and the library.
But on i386 (use /lib/libc.so.6) it only produces some of the calls in the
library, none in the executable:

$ stap -e 'probe process("/bin/ls").function("*").call,
process("/lib/libc.so.6").function("*").call { log(pp()) }' -c /bin/ls
process("/lib/libc.so.6").function("__sigprocmask@../sysdeps/unix/sysv/linux/sigprocmask.c:38").call
process("/lib/libc.so.6").function("execvp@/usr/src/debug/glibc-2.11.1/posix/execvp.c:26").call
process("/lib/libc.so.6").function("__execvpe@/usr/src/debug/glibc-2.11.1/posix/execvpe.c:50").call
process("/lib/libc.so.6").function("__execve@../sysdeps/unix/sysv/linux/execve.c:28").call
process("/lib/libc.so.6").function("__new_getrlimit@../sysdeps/unix/sysv/linux/i386/getrlimit.c:40").call
process("/lib/libc.so.6").function("__sysconf@../sysdeps/unix/sysv/linux/x86_64/sysconf.c:32").call
process("/lib/libc.so.6").function("__getpagesize@../sysdeps/unix/sysv/linux/getpagesize.c:27").call

And that is it. Only probing the process itself and not the library correctly
logs all executable function calls.

-- 
           Summary: Tracking executable plus library fails on i386
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: runtime
        AssignedTo: systemtap at sources dot redhat dot com
        ReportedBy: mjw at redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=11249

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