Crash on HttpSM::parse_range_and_compare

[masaori335]

[ 00 ] libpthread-2.17.so             waitpid                                                                                
[ 01 ] traffic_server                 crash_logger_invoke(int, siginfo_t*, void*)                                            ( Crash.cc:168 )
[ 02 ] libpthread-2.17.so                                                                                                    
[ 03 ] traffic_server                 HttpSM::parse_range_and_compare(MIMEField*, long)                                      ( hdrs/HTTP.h:1525 )
[ 04 ] traffic_server                 HttpSM::do_range_parse(MIMEField*)                                                     ( HttpSM.cc:4695 )
[ 05 ] traffic_server                 HttpSM::do_range_setup_if_necessary()   
...

We're facing a crash on HttpSM::parse_range_and_compare with 9.2.x.

[masaori335]

It looks like t_state->cache_info.object_read is nullptr.

(gdb) frame 1
#1  HttpSM::parse_range_and_compare(MIMEField*, long) (this=0x7fbcbf5024d0, field=<optimized out>, content_length=1478017) at HttpSM.cc:4620
4620            HTTPInfo::FragOffset *frag_offset_tbl = t_state.cache_info.object_read->get_frag_table();
(gdb) p this->t_state->cache_info.object_read
$4 = (HTTPInfo *) 0x0