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  1. RHEL
  2. RHEL-7333

Build-id mismatch task_finder mmap inode-uprobes callback for task XXXX failed

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      Description of problem:

      When we try to execute stap command as below, we can see WARNING as listed below.
      ~~~

      1. stap -vge 'probe process("/usr/lib64/libsystemd.so.0.23.0").function("sd_bus_open_system") {print_ubacktrace() exit()}'
        Pass 1: parsed user script and 506 library scripts using 356700virt/154692res/17156shr/139544data kb, in 500usr/100sys/617real ms.
        Pass 2: analyzed script: 1 probe, 2 functions, 0 embeds, 0 globals using 374716virt/173776res/18208shr/157560data kb, in 120usr/20sys/131real ms.
        Pass 3: using cached /root/.systemtap/cache/7e/stap_7edbe3badfbf0f26279da1ce235c1724_1672.c
        Pass 4: using cached /root/.systemtap/cache/7e/stap_7edbe3badfbf0f26279da1ce235c1724_1672.ko
        Pass 5: starting run.
        WARNING: Build-id mismatch [man warning::buildid]: "/usr/lib64/libsystemd.so.0.23.0" pid 4951 address 0x7fde382a3280, expected 2cc229fa40c8781cf10c5d5f692e5bfba709fa64 actual 01002501f8954c47fd3c0e45f3272230b17c64d9
        WARNING: task_finder mmap inode-uprobes callback for task 4951 failed: 1
        WARNING: Build-id mismatch [man warning::buildid]: "/usr/lib64/libsystemd.so.0.23.0" pid 4827 address 0x7f4b5019d280, expected 2cc229fa40c8781cf10c5d5f692e5bfba709fa64 actual 01002501f8954c47fd3c0e45f3272230b17c64d9
        WARNING: task_finder mmap inode-uprobes callback for task 4827 failed: 1
        WARNING: Build-id mismatch [man warning::buildid]: "/usr/lib64/libsystemd.so.0.23.0" pid 4949 address 0x7fde382a3280, expected 2cc229fa40c8781cf10c5d5f692e5bfba709fa64 actual 01002501f8954c47fd3c0e45f3272230b17c64d9
        ......
        ~~~

        Version-Release number of selected component (if applicable):
        ~~~
        # rpm -qa |grep systemtap
        systemtap-client-4.7-1.el8.x86_64
        systemtap-debugsource-4.7-1.el8.x86_64
        systemtap-4.7-1.el8.x86_64
        systemtap-runtime-4.7-1.el8.x86_64
        systemtap-devel-4.7-1.el8.x86_64
        systemtap-runtime-debuginfo-4.7-1.el8.x86_64
        systemtap-sdt-devel-4.7-1.el8.x86_64
        systemtap-runtime-virtguest-4.7-1.el8.x86_64
        systemtap-debuginfo-4.7-1.el8.x86_64

        # rpm -qa |grep systemd
        systemd-udev-239-68.el8.x86_64
        systemd-debuginfo-239-68.el8.x86_64
        systemd-container-239-68.el8.x86_64
        systemd-debuginfo-239-68.el8.i686
        rpm-plugin-systemd-inhibit-4.14.3-24.el8_7.x86_64
        systemd-libs-239-68.el8.i686
        systemd-pam-debuginfo-239-68.el8.x86_64
        systemd-libs-debuginfo-239-68.el8.i686
        systemd-pam-239-68.el8.x86_64
        systemd-239-68.el8.x86_64
        systemd-devel-239-68.el8.x86_64
        systemd-libs-239-68.el8.x86_64
        systemd-debugsource-239-68.el8.i686
        systemd-debugsource-239-68.el8.x86_64
        python3-systemd-234-8.el8.x86_64
        systemd-libs-debuginfo-239-68.el8.x86_64

        kernel -
        4.18.0-425.13.1.el8_7.x86_64

        RH -
        Red Hat Enterprise Linux release 8.7 (Ootpa)
        ~~~

        How reproducible:
        execute command as below
        ~~~
        # stap -vge 'probe process("/usr/lib64/libsystemd.so.0.23.0").function("sd_bus_open_system") {print_ubacktrace() exit()}

        '
        ~~~

      Steps to Reproduce:
      1.
      2.
      3.

      Actual results:
      WARNING keep showing

      Expected results:
      No warning

      Additional info:

      Regards
      Sam

            rhtorsys Frank Eigler
            rhn-support-xili Xinhua Li
            Frank Eigler Frank Eigler
            qe-baseos-tools-bugs@redhat.com qe-baseos-tools-bugs@redhat.com qe-baseos-tools-bugs@redhat.com qe-baseos-tools-bugs@redhat.com
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              Created:
              Updated:
              Resolved: