Created attachment 491286 [details]
full backtrace of the crash

Description of problem:

using sssd with srv record lookup enabled im getting a sigbus in c-ares on sparc

Version-Release number of selected component (if applicable):


How reproducible: always


Steps to Reproduce:
1. start sssd
2. try to log in
3.
  
Actual results:
Program received signal SIGBUS, Bus error.
ares_parse_srv_reply (abuf=0xff855720 ")r\205\200", alen=238, srv_out=0xff85551c) at ares_parse_srv_reply.c:142
142	          srv_curr->priority = ntohs (*((unsigned short *)vptr));

Expected results:
things to work

Additional info:

SIGBUS on sparc means that there is a memory alignment issue.  this will likely effect arm and s390 also