<div dir="ltr">Hi,<div><br></div><div>It looks like this is a bug that was fixed in later releases. The `path` variable was a null pointer when it was passed to `systemd_unit_exec_with_unit` as the `unit` argument. Commit <a href="https://github.com/ClusterLabs/pacemaker/commit/62a0d26a8f85fbcee9b56524ea3f1ae0171cbe52#diff-00b989f66499e2081134c17c06d2b359R201">62a0d26a</a> adds a null check to the `path` variable before using it to call `systemd_unit_exec_with_unit`.</div><div><br></div><div>I believe pacemaker-1.1.15-11.el7 is the first RHEL pacemaker release that contains the fix. Can you upgrade and see if the issue is resolved?<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Jul 28, 2020 at 11:49 PM lkxjtu <<a href="mailto:lkxjtu@163.com">lkxjtu@163.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="line-height:1.7;color:rgb(0,0,0);font-size:14px;font-family:Arial"><div style="margin:0px">RPM Version Information:<br>corosync-2.3.4-7.el7_2.1.x86_64<br>pacemaker-1.1.12-22.el7.x86_64</div><div style="margin:0px"><br></div><div style="margin:0px"><br></div><div style="margin:0px">Coredump file backtrace:</div><div style="margin:0px"><br>```<br>warning: .dynamic section for "/lib64/libk5crypto.so.3" is not at the expected address (wrong library or version mismatch?)<br>Missing separate debuginfo for<br>Try: yum --enablerepo='*debug*' install /usr/lib/debug/.build-id/91/375124d864f2692ced1c4a5f090826b7074dc0<br>[Thread debugging using libthread_db enabled]<br>Using host libthread_db library "/lib64/libthread_db.so.1".<br>Core was generated by `/usr/libexec/pacemaker/lrmd'.<br>Program terminated with signal 6, Aborted.<br>#0 0x00007f6ee9ed85f7 in raise () from /lib64/libc.so.6<br>Missing separate debuginfos, use: debuginfo-install audit-libs-2.4.1-5.el7.x86_64 bzip2-libs-1.0.6-13.el7.x86_64 corosynclib-2.3.4-7.el7_2.1.x86_64 dbus-libs-1.6.12-13.el7.x86_64 glib2-2.42.2-5.el7.x86_64 glibc-2.17-106.el7_2.4.x86_64 gmp-6.0.0-12.el7_1.x86_64 gnutls-3.3.8-14.el7_2.x86_64 keyutils-libs-1.5.8-3.el7.x86_64 krb5-libs-1.15.1-19.el7.x86_64 libcom_err-1.42.9-7.el7.x86_64 libffi-3.0.13-16.el7.x86_64 libqb-0.17.1-2.el7.1.x86_64 libselinux-2.5-12.el7.x86_64 libtasn1-3.8-2.el7.x86_64 libtool-ltdl-2.4.2-21.el7_2.x86_64 libuuid-2.23.2-26.el7_2.2.x86_64 libxml2-2.9.1-6.el7_2.2.x86_64 libxslt-1.1.28-5.el7.x86_64 nettle-2.7.1-4.el7.x86_64 openssl-libs-1.0.1e-51.el7_2.4.x86_64 p11-kit-0.20.7-3.el7.x86_64 pam-1.1.8-12.el7_1.1.x86_64 pcre-8.32-15.el7.x86_64 trousers-0.3.13-1.el7.x86_64 xz-libs-5.1.2-12alpha.el7.x86_64 zlib-1.2.7-15.el7.x86_64<br>(gdb) bt<br>#0 0x00007f6ee9ed85f7 in raise () from /lib64/libc.so.6<br>#1 0x00007f6ee9ed9ce8 in abort () from /lib64/libc.so.6<br>#2 0x00007f6eeb7e1f67 in crm_abort (file=file@entry=0x7f6eeb5c863e "systemd.c", function=function@entry=0x7f6eeb5c8ec0 <__FUNCTION__.33949> "systemd_unit_exec_with_unit", line=line@entry=514,<br> assert_condition=assert_condition@entry=0x7f6eeb5c8713 "unit", do_core=do_core@entry=1, do_fork=<optimized out>, do_fork@entry=0) at utils.c:1197<br>#3 0x00007f6eeb5c5cef in systemd_unit_exec_with_unit (op=op@entry=0x13adce0, unit=0x0) at systemd.c:514<br>#4 0x00007f6eeb5c5e81 in systemd_loadunit_result (reply=reply@entry=0x139f2a0, op=op@entry=0x13adce0) at systemd.c:175<br>#5 0x00007f6eeb5c6181 in systemd_loadunit_cb (pending=0x13aa380, user_data=0x13adce0) at systemd.c:197<br>#6 0x00007f6eeb16f862 in complete_pending_call_and_unlock () from /lib64/libdbus-1.so.3<br>#7 0x00007f6eeb172b51 in dbus_connection_dispatch () from /lib64/libdbus-1.so.3<br>#8 0x00007f6eeb5c1e40 in pcmk_dbus_connection_dispatch (connection=0x13a4cb0, new_status=DBUS_DISPATCH_DATA_REMAINS, data=0x0) at dbus.c:388<br>#9 0x00007f6eeb171260 in _dbus_connection_update_dispatch_status_and_unlock () from /lib64/libdbus-1.so.3<br>#10 0x00007f6eeb172a93 in reply_handler_timeout () from /lib64/libdbus-1.so.3<br>#11 0x00007f6eeb5c1daf in pcmk_dbus_timeout_dispatch (data=0x13aa660) at dbus.c:491<br>#12 0x00007f6ee97a21c3 in g_timeout_dispatch () from /lib64/libglib-2.0.so.0<br>#13 0x00007f6ee97a17aa in g_main_context_dispatch () from /lib64/libglib-2.0.so.0<br>#14 0x00007f6ee97a1af8 in g_main_context_iterate.isra.24 () from /lib64/libglib-2.0.so.0<br>#15 0x00007f6ee97a1dca in g_main_loop_run () from /lib64/libglib-2.0.so.0<br>#16 0x0000000000402824 in main (argc=<optimized out>, argv=0x7ffce752b258) at main.c:344<br>(gdb) up<br>#1 0x00007f6ee9ed9ce8 in abort () from /lib64/libc.so.6<br>(gdb) up<br>#2 0x00007f6eeb7e1f67 in crm_abort (file=file@entry=0x7f6eeb5c863e "systemd.c", function=function@entry=0x7f6eeb5c8ec0 <__FUNCTION__.33949> "systemd_unit_exec_with_unit", line=line@entry=514,<br> assert_condition=assert_condition@entry=0x7f6eeb5c8713 "unit", do_core=do_core@entry=1, do_fork=<optimized out>, do_fork@entry=0) at utils.c:1197<br>1197 abort();<br>(gdb) up<br>#3 0x00007f6eeb5c5cef in systemd_unit_exec_with_unit (op=op@entry=0x13adce0, unit=0x0) at systemd.c:514<br>514 CRM_ASSERT(unit);<br>(gdb) up<br>#4 0x00007f6eeb5c5e81 in systemd_loadunit_result (reply=reply@entry=0x139f2a0, op=op@entry=0x13adce0) at systemd.c:175<br>175 systemd_unit_exec_with_unit(op, path);<br>(gdb) up<br>#5 0x00007f6eeb5c6181 in systemd_loadunit_cb (pending=0x13aa380, user_data=0x13adce0) at systemd.c:197<br>197 systemd_loadunit_result(reply, user_data);<br>(gdb) up<br>#6 0x00007f6eeb16f862 in complete_pending_call_and_unlock () from /lib64/libdbus-1.so.3<br>(gdb) up<br>#7 0x00007f6eeb172b51 in dbus_connection_dispatch () from /lib64/libdbus-1.so.3<br>(gdb) up<br>#8 0x00007f6eeb5c1e40 in pcmk_dbus_connection_dispatch (connection=0x13a4cb0, new_status=DBUS_DISPATCH_DATA_REMAINS, data=0x0) at dbus.c:388<br>388 dbus_connection_dispatch(connection);<br>(gdb) up<br>#9 0x00007f6eeb171260 in _dbus_connection_update_dispatch_status_and_unlock () from /lib64/libdbus-1.so.3<br>(gdb) up<br>#10 0x00007f6eeb172a93 in reply_handler_timeout () from /lib64/libdbus-1.so.3<br>(gdb) up<br>#11 0x00007f6eeb5c1daf in pcmk_dbus_timeout_dispatch (data=0x13aa660) at dbus.c:491<br>491 dbus_timeout_handle(data);<br>(gdb) up<br>#12 0x00007f6ee97a21c3 in g_timeout_dispatch () from /lib64/libglib-2.0.so.0<br>(gdb) up<br>#13 0x00007f6ee97a17aa in g_main_context_dispatch () from /lib64/libglib-2.0.so.0<br>(gdb) up<br>#14 0x00007f6ee97a1af8 in g_main_context_iterate.isra.24 () from /lib64/libglib-2.0.so.0<br>(gdb) up<br>#15 0x00007f6ee97a1dca in g_main_loop_run () from /lib64/libglib-2.0.so.0<br>(gdb) up<br>#16 0x0000000000402824 in main (argc=<optimized out>, argv=0x7ffce752b258) at main.c:344<br>344 g_main_run(mainloop);<br>(gdb) r<br>Starting program: /usr/libexec/pacemaker/lrmd<br>[Thread debugging using libthread_db enabled]<br>Using host libthread_db library "/lib64/libthread_db.so.1".<br>[Inferior 1 (process 3889819) exited with code 0144]<br>```</div><div style="margin:0px"><br></div><p style="margin:0px">From the backtrace, I found the program assert failed in function of "systemd_uit_exec_with_unit", because the parameter of path is "0x0". <br>I don't quite understand what may lead to the failure of this assert? Is it a bug or a configuration problem?</p><p style="margin:0px"><br></p></div><br><br><span title="neteasefooter"><p> </p></span>_______________________________________________<br>
Manage your subscription:<br>
<a href="https://lists.clusterlabs.org/mailman/listinfo/users" rel="noreferrer" target="_blank">https://lists.clusterlabs.org/mailman/listinfo/users</a><br>
<br>
ClusterLabs home: <a href="https://www.clusterlabs.org/" rel="noreferrer" target="_blank">https://www.clusterlabs.org/</a><br>
</blockquote></div><br clear="all"><br>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div>Regards,<br><br></div>Reid Wahl, RHCA<br></div><div>Software Maintenance Engineer, Red Hat<br></div>CEE - Platform Support Delivery - ClusterHA</div></div></div></div></div></div></div></div></div></div></div></div></div></div>