ORA-00600: internal error code, arguments: [kfgSiteNumPopulate02] - 19c Extended RAC

We were working on 8 node Extended RAC setup and based on request from customer we need to scale up the existing ASM disk group and when we tried adding the disk to the disk group we encountered the following error

SQL> alter diskgroup data add disk '/dev/mapper/CL1_SITEA_D007' force;
alter diskgroup data add disk '/dev/mapper/CL1_SITEA_D007' force
*
ERROR at line 1:
ORA-00600: internal error code, arguments: [kfgSiteNumPopulate02], [], [], [],
[], [], [], [], [], [], [], []

Error From ASM Alert logfile:

Dumping diagnostic data in directory=[cdmp_20230424121633], requested by (instance=1, osid=397487), summary=[incident=68188].
2023-04-24T12:16:33.770798+03:00
NOTE: Attempting voting file refresh on diskgroup DATA
NOTE: Refresh completed on diskgroup DATA. No voting file found.
2023-04-24T12:16:36.289397+03:00
ORA-00600: internal error code, arguments: [kfgSiteNumPopulate02], [], [], [], [], [], [], [], [], [], [], []

2023-04-24T12:16:36.289445+03:00
ERROR: alter diskgroup data add disk '/dev/mapper/CL1_SITEA_D007' force

Solution: 

 Unfortunately, it was a BUG and we were able to fix the above command after applying the interim patch “patch 34724331”. It’s a one-of-patch and can be applied across all cluster nodes in a rolling manner. 

 Hope it helped, thanks for reading and happy troubleshooting. 

 regards, 

ZAHEER