[Dovecot] Coredump in dovecot-auth on gss auth

[Dan Price]

I've enabled the GSS code in dovecot, but our Kerberos nerds
are complaining that it doesn't work :)  I probably have the
thing totally misconfigured (so don't worry about that part for
now), but I do have a crash:

Info: imap-login: Disconnected: rip=XXX.YYY.229.8, lip= XXX.YYY.17.59, TLS handshake
Error: auth(default): gssapi(?,XXX.YYY.229.8): While acquiring service credentials: No credentials were supplied, or the credentials were unavailable or inaccessible
Error: auth(default): gssapi(?,XXX.YYY.229.8): While acquiring service credentials: No principal in keytab matches desired name
Info: imap-login: Disconnected: method=GSSAPI, rip=129.146.229.8, lip=XXX.YYY.17.59
Error: child 188558 (auth) killed with signal 11
Info: imap-login: Disconnected: method=PLAIN, rip=129.146.229.8, lip=XXX.YYY.17.59

The dovecot auth process SIGSEGV's and dies at login time (I think).  Here's
the backtrace:

(gdb) bt full
#0  0xfef25e1a in gss_release_name () from /usr/lib/libgss.so.1
No symbol table info available.
#1  0x08064ccf in mech_gssapi_auth_free (request=0xfef3c000)
    at mech-gssapi.c:394
        minor_status = 0
#2  0x08060551 in auth_request_handler_flush_failures ()
    at auth-request-handler.c:493
        auth_request = (struct auth_request **) 0x8047b5c
        i = 1
        size = 1
        __PRETTY_FUNCTION__ = "auth_request_handler_flush_failures"
#3  0x0806f54a in io_loop_handle_timeouts (ioloop=0x8096f78) at ioloop.c:276
        t = (struct timeout *) 0x8098048
        called_timeouts = (struct timeout *) 0x8098048
        tv = {tv_sec = 134852200, tv_usec = 0}
        t_id = 2
#4  0x0806fb42 in io_loop_handler_run (ioloop=0x8096f78) at ioloop-poll.c:159
        ctx = (struct ioloop_handler_context *) 0x8096fb0
        pollfd = (struct pollfd *) 0x8096f78
        tv = {tv_sec = 0, tv_usec = 0}
        io = (struct io *) 0x8047f99
        t_id = 134836088
        msecs = 134894204
        ret = 0
        call = true
#5  0x0806f65d in io_loop_run (ioloop=0x8096f78) at ioloop.c:311
No locals.
#6  0x08062bb2 in main (argc=1, argv=0x809ae68) at main.c:321
        foreground = false

Thanks,

        -dp

-- 
Daniel Price - Solaris Kernel Engineering - dp at eng.sun.com - blogs.sun.com/dp