Symantec Endpoint Protection (SEP) client smcd service on Linux crashes after an "update content" command is sent from SEPM (SEP Manager).
SEP Linux clients will appear offline in SEPM and when client is checked the smcd service will not be running.
Example error from /var/log/messages (or /var/log/syslog on Ubuntu/Debian systems):
kernel: smcd: segfault at 202c55b4 ip 00000000006ee102 sp 00000000f4bfbff4 error 4 in libpthread-2.12.so[6e7000+17000]
The SEP Linux client is improperly handling the purging of duplicate "update content" commands.
This problem is fixed in Symantec Endpoint Protection 12.1 Release Update 6 Maintenance Patch 5 (12.1.6 MP5).
For information on how to obtain the latest build of Symantec Endpoint Protection, see Download the latest version of Symantec Endpoint Protection.
The smcd service can be restarted. And avoid sending multiple "update content" commands from the SEPM to SEP Linux clients. In particular, it is not necessary to manually send the same commands to child client groups after a command is sent to parent group; a command sent to parent group will automatically be sent to all clients in child groups.