[ 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      Vol::force_evacuate_head(Dir*, int)                                  ( P_CacheVol.h:461 )
[ 04 ] traffic_server      CacheVC::openReadClose(int, Event*)                                  ( CacheRead.cc:542 )
[ 05 ] traffic_server      CacheVC::calluser(int)                                               ( P_CacheInternal.h:705 )
[ 06 ] traffic_server      CacheVC::openReadMain(int, Event*)                                   ( CacheRead.cc )
[ 07 ] traffic_server      CacheVC::openReadReadDone(int, Event*)                               ( CacheRead.cc:639 )
[ 08 ] traffic_server      CacheVC::handleReadDone(int, Event*)                                 ( eventsystem/I_Continuation.h:219 )
[ 09 ] traffic_server      CacheVC::openReadMain(int, Event*)                                   ( eventsystem/I_Continuation.h:219 )
[ 10 ] traffic_server      EThread::process_event(Event*, int)                                  ( I_Continuation.h:219 )
[ 11 ] traffic_server      EThread::process_queue(Queue<Event, Event::Link_link>*, int*, int*)  ( UnixEThread.cc:162 )
[ 12 ] traffic_server      EThread::execute_regular()                                           ( UnixEThread.cc:222 )
[ 13 ] traffic_server      EThread::execute()                                                   ( UnixEThread.cc:327 )
[ 14 ] traffic_server      spawn_thread_internal(void*) [clone .llvm.4297563414356737819]       ( Thread.cc:92 )
[ 15 ] libpthread-2.17.so  start_thread