[jira] [Resolved] (TS-4207) Crash in HostDB, likely a regression from 5.x

["Thomas Jackson (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TS-4207?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thomas Jackson resolved TS-4207.
--------------------------------
    Resolution: Fixed

> Crash in HostDB, likely a regression from 5.x
> ---------------------------------------------
>
>                 Key: TS-4207
>                 URL: https://issues.apache.org/jira/browse/TS-4207
>             Project: Traffic Server
>          Issue Type: Bug
>          Components: HostDB
>            Reporter: Leif Hedstrom
>            Assignee: Leif Hedstrom
>            Priority: Blocker
>              Labels: crash
>             Fix For: 6.2.0
>
>
> We're seeing a new crash in HostDB, which did not occur in 5.3.x:
> {code}
> (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
> {code}
> I think some inlining here complicates things, what it looks like the "r" is NULL, but it somehow still ends up using r->rr ?



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)