[TS-4743] Parent use consistent_hash Strategy may cause crash while first parent is not set

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 7.0.0
• Assignee: John Rushford
• Reporter: xiangdong chen
• Created: 12/Aug/16 03:14
• Updated: 18/Oct/16 23:58
• Resolved: 23/Aug/16 14:13

Description

my parent.config
eg :
dest_domain=. secondary_parent="192.168.104.229:80|1.0; 192.168.104.182:80|1.0" round_robin=consistent_hash
the crash place is :
DEBUG: <ParentConsistentHash.cc:167 (selectParent)> (parent_select) wrap_around[PRIMARY]: 1, wrap_around[SECONDARY]: 0
traffic_server: Segmentation fault (Address not mapped to object [0x10])

ParentConsistentHash.cc:167 code:
Debug("parent_select", "Selected parent %s is not available, looking up another parent.", pRec->hostname);

Fix the code like
Debug("parent_select", "Selected parent %s is not available, looking up another parent.", pRec ? pRec->hostname:"[NULL]");

Issue Links

• links to: GitHub Pull Request #873
• links to: GitHub Pull Request #899