Blocker Description
We're seeing a new crash in HostDB, which did not occur in 5.3.x:
(gdb) bt #0 0x00002aaaaac7b2bb in HttpSM::process_hostdb_info(HostDBInfo*) () at ../../iocore/hostdb/P_HostDBProcessor.h:295 #1 0x00002aaaaac88b16 in HttpSM::state_hostdb_lookup(int, void*) () at HttpSM.cc:2126 #2 0x00002aaaaac9713d in HttpSM::main_handler(int, void*) () at HttpSM.cc:2561 #3 0x00002aaaaad7803e in reply_to_cont(Continuation*, HostDBInfo*, bool) () at ../../iocore/eventsystem/I_Continuation.h:153 #4 0x00002aaaaad7eca5 in HostDBContinuation::dnsEvent(int, HostEnt*) () at HostDB.cc:1685 #5 0x00002aaaaad98faf in DNSEntry::postEvent(int, Event*) () at ../../iocore/eventsystem/I_Continuation.h:153 #6 0x00002aaaaae7e420 in EThread::process_event(Event*, int) () at I_Continuation.h:153 #7 0x00002aaaaae7f2ab in EThread::execute() () at UnixEThread.cc:179 #8 0x00002aaaaae7de06 in spawn_thread_internal(void*) () at Thread.cc:86 #9 0x00002aaaad6ac9d1 in start_thread () from /lib64/libpthread.so.0 #10 0x00002aaaae8b58fd in clone () from /lib64/libc.so.6
I think some inlining here complicates things, what it looks like the "r" is NULL, but it somehow still ends up using r->rr ?
