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Clish crashes with Segmentation fault after running any 'show cloning-group ...' Clish command on cluster members
Symptoms
  • SSH session closes after running any 'show cloning-group ...' Clish command (e.g, 'show cloning-group members') on cluster members with enabled Cloning Group.

  • Clish crashes with Segmentation fault after running any 'show cloning-group ...' Clish command.

  • After enabling generation of core dump files for processes with SUID permisssions per sk102130, core dump files for 'CLISH' process were generated in the /var/log/dump/usermode/ directory.

  • Core dump files from CLISH process contain the following stack:

    [Expert@HostName:]# ./gdb /bin/clish clish_dump
    ...
    Core was generated by `/bin/clish'.
    Program terminated with signal 11, Segmentation fault.
    #0 0x... in __kernel_vsyscall ()
    (gdb) thread 1
    [Switching to thread 1 (Thread ...)]#0 0x... in __kernel_vsyscall ()
    (gdb) bt
    #0 0x... in __kernel_vsyscall ()
    #1 0x... in select () from /lib/libc.so.6
    #2 0x... in ?? () from /usr/lib/libtcl8.4.so
    #3 0x... in start_thread () from /lib/libpthread.so.0
    #4 0x... in clone () from /lib/libc.so.6
    (gdb) thread 2
    [Switching to thread 2 (Thread ...)]#0 0x... in ShowClusterMembers ()
    from /usr/lib/cli/lib/libcli_cluster_config.so
    (gdb) bt
    #0 0x... in ShowClusterMembers () from /usr/lib/cli/lib/libcli_cluster_config.so
    #1 0x... in InvokeHandler ()
    #2 0x... in ProcessActApi ()
    #3 0x... in shExecuteCmd ()
    #4 0x... in ProcessCommand ()
    #5 0x... in main ()
    (gdb)
    
Cause

Clish was not able to handle correctly the scenario when Cloning Group was configured before ClusterXL was configured.


Solution
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