SG500 - Fatal Errors & Reboots

Question

These fatal errors and subsequent reboots are observed on my SG500-52P when I was reconfiguring the LAG ports on my server.
I had the ports added to a LAG on the switch but the ports on the server were still just regular access ports.
I was doing some other things and left it like this for a little while but the switch was very angry...
Also, please note that, after these reboots on it's own, the switch actually stopped passing traffic and had to be manually power cycled by hand to restore connectivity.
2147477095
2013-Oct-10 13:28:09
Emergency
%2SWIPMBRG-F-IPMBRGADDEGRESSPORTS: Failed to add port 1001 to videx 4096 ,Err message Operation failed  ***** FATAL ERROR *****  Reporting Task: BRMN. Softw are Version: 1.3.5.58 (date  10-Oct-2013 time  17:17:15) 0x16b9ec 0x167b58 0x762560 0x4e8fe8 0x4e98f8 0x4e9b18 0xa06870 0x7b1a34 0x5c39ec 0x5c442c 0x 5ccc74 0x5b0384 0x5baedc 0x69fe18 0x1223f0  ***** END OF FATAL ERROR *****    
2147478733
2013-Oct-10 13:29:12
Emergency
%2SWIPMBRG-F-IPMBRGADDEGRESSPORTS: Failed to add port 1001 to videx 4096 ,Err message Operation failed  ***** FATAL ERROR *****  Reporting Task: BRMN. Softw are Version: 1.3.5.58 (date  10-Oct-2013 time  17:17:15) 0x16b9ec 0x167b58 0x762560 0x4e8fe8 0x4e98f8 0x4e9b18 0xa06870 0x7b1a34 0x5c39ec 0x5c442c 0x 5ccc74 0x5b0384 0x5baedc 0x69fe18 0x1223f0  ***** END OF FATAL ERROR *****    
2147480371
2013-Oct-10 14:46:35
Emergency
%2SWIPMBRG-F-IPMBRGADDEGRESSPORTS: Failed to add port 1001 to videx 4096 ,Err message Operation failed  ***** FATAL ERROR *****  Reporting Task: BRMN. Softw are Version: 1.3.5.58 (date  10-Oct-2013 time  17:17:15) 0x16b9ec 0x167b58 0x762560 0x4e8fe8 0x4e98f8 0x4e9b18 0xa06870 0x7b1a34 0x5c39ec 0x5c442c 0x 5ccc74 0x5b0384 0x5baedc 0x69fe18 0x1223f0  ***** END OF FATAL ERROR *****    
2147482009
2013-Oct-10 13:33:49
Emergency
%2SWIPMBRG-F-IPMBRGADDEGRESSPORTS: Failed to add port 1001 to videx 4096 ,Err message Operation failed  ***** FATAL ERROR *****  Reporting Task: BRMN. Softw are Version: 1.3.5.58 (date  10-Oct-2013 time  17:17:15) 0x16b9ec 0x167b58 0x762560 0x4e8fe8 0x4e98f8 0x4e9b18 0xa06870 0x7b1a34 0x5c39ec 0x5c442c 0x 5ccc74 0x5b0384 0x5baedc 0x69fe18 0x1223f0  ***** END OF FATAL ERROR *****    
2147483647
2013-Oct-18 14:02:41
Emergency
%2SWIPMBRG-F-IPMBRGADDEGRESSPORTS: Failed to add port 1001 to videx 4096 ,Err message Operation failed  ***** FATAL ERROR *****  Reporting Task: BRMN. Softw are Version: 1.3.5.58 (date  10-Oct-2013 time  17:17:15) 0x16b9ec 0x167b58 0x762560 0x4e8fe8 0x4e98f8 0x4e9b18 0xa06870 0x7b1a34 0x5c39ec 0x5c442c 0x 5ccc74 0x5b0384 0x5baedc 0x69fe18 0x1223f0  ***** END OF FATAL ERROR *****    

Answer 1

After working with Cisco, I just wanted to update this post with the information I received from them and the solution.
The root cause of this issue is explained below:
a.    The issue is caused by a timeout to an MLD join that device receives on one of its ports.
b.    Reboot will happen only if the MLD join is to one of the Link Local Multicast groups of which the switch is member. (this membership is added automatically under some IPv6 configurations. You can see this membership by using command “show bridge multicast address-table”.
c.    Examination of info from you leads us to believe that  MLD report to group  fe02::1:2 (All DHCP Agents) is the one that caused reboot.
d.    Device becomes member of this group due to command “ipv6 dhcp relay destination ” configured on VLAN 1.
e.    You reported that it is noticed sometimes when firewall server config is changed or rebooted, we assume that when this server comes up – it sends out an MLD report for the above group - fe02::1:2 .  (we can check this by capturing traffic on the server after reboot and checking if such message is sent).
A firmware with the related fix is scheduled for release in July.