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From: "wcohen at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug translator/23634] New: WARNING: Can't parse SDT_V3 operand  for x86_64 qemu shared libraries
Date: Tue, 11 Sep 2018 19:12:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D23634

            Bug ID: 23634
           Summary: WARNING: Can't parse SDT_V3 operand  for x86_64 qemu
                    shared libraries
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: translator
          Assignee: systemtap at sourceware dot org
          Reporter: wcohen at redhat dot com
  Target Milestone: ---

On x86_64 Fedora 28 when trying the qemu_count.stp example getting a lot of
WARNING messages like the following:

$ stap -v qemu_count.stp=20
Pass 1: parsed user script and 544 library scripts using
940556virt/623632res/9092shr/614684data kb, in 1540usr/170sys/1715real ms.
WARNING: Can't parse SDT_V3 operand 'balloon_opaque(%rip)' [man error::sdt]:
identifier '$arg1' at /usr/share/systemtap/tapset/qemu-system-aarch64.stp:1=
7:12
 source:   opaque =3D $arg1;
                    ^
WARNING: Can't parse SDT_V3 operand 'balloon_opaque(%rip)' [man error::sdt]:
identifier '$arg1' at :17:12
 source:   opaque =3D $arg1;
                    ^
WARNING: Can't parse SDT_V3 operand 'seq_iter.32696(%rip)' [man error::sdt]:
identifier '$arg2' at :1572:14
 source:   seq_iter =3D $arg2;
                      ^
WARNING: Can't parse SDT_V3 operand 'seq_iter.32696(%rip)' [man error::sdt]:
identifier '$arg2' at :1572:14
 source:   seq_iter =3D $arg2;
                      ^
[wcohen@cervelo virtualization]$ rpm -qf
/usr/share/systemtap/tapset/qemu-system-aarch64.stp=20
qemu-system-aarch64-core-2.11.2-2.fc28.x86_64
[wcohen@cervelo virtualization]$ rpm -q systemtap
systemtap-3.3-1.fc28.x86_64

The problem also appears with systemtap build from a current git checkout on
Fedora28.  However, do not see the problem on RHEL7.  Suspect that different
info being generated in .note.stapsdt for Fedora 28 and RHEL7.

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