Bug 16342
| Summary: | Problems with krb_realmofhost() and/or krb_get_lrealm() | ||
|---|---|---|---|
| Product: | Base System | Reporter: | Andre Albsmeier <Andre.Albsmeier> |
| Component: | bin | Assignee: | freebsd-bugs (Nobody) <bugs> |
| Status: | Closed FIXED | ||
| Severity: | Affects Only Me | ||
| Priority: | Normal | ||
| Version: | 3.4-STABLE | ||
| Hardware: | Any | ||
| OS: | Any | ||
State Changed From-To: open->feedback Does this problem still occur in newer versions of FreeBSD, such as 4.3-RELEASE? Adding to Audit-Trail. ----- Forwarded message from Andre Albsmeier <andre.albsmeier@mchp.siemens.de> ----- Delivered-To: mike@freebsd.org X-Envelope-Sender-Is: andre.albsmeier@mchp.siemens.de (at relayer david.siemens.de) Date: Mon, 23 Jul 2001 13:35:49 +0200 From: Andre Albsmeier <andre.albsmeier@mchp.siemens.de> To: mike@FreeBSD.org Subject: Re: bin/16342: Problems with krb_realmofhost() and/or krb_get_lrealm() User-Agent: Mutt/1.2.5i In-Reply-To: <200107211907.f6LJ7qt43478@freefall.freebsd.org>; from mike@FreeBSD.org on Sat, Jul 21, 2001 at 12:07:52PM -0700 X-Echelon: BND CIA NSA Mossad KGB MI6 IRA detonator nuclear assault strike On Sat, 21-Jul-2001 at 12:07:52 -0700, mike@FreeBSD.org wrote: > Synopsis: Problems with krb_realmofhost() and/or krb_get_lrealm() > > State-Changed-From-To: open->feedback > State-Changed-By: mike > State-Changed-When: Sat Jul 21 12:07:10 PDT 2001 > State-Changed-Why: > > Does this problem still occur in newer versions of FreeBSD, > such as 4.3-RELEASE? I don't know. I haven't used MAKE_KERBEROS4=yes for a long time now. I suggest closing the PR. Thanks, -Andre ----- End forwarded message ----- State Changed From-To: feedback->closed Closed at the originator's request. |
I was using xlockmore on my laptop. The hostname was set to "schlappy". I am not using fully qualified hostnames since I have no own domain. When the screen was locked by xlock and I entered my password, I noticed that it took a few seconds until the screen was unlocked again. xlock then has crashed with a coredump. I suspected a problem in xlock and looked with gdb at the corefile, here is part of the output: #0 0x282235df in send () from /usr/lib/libc.so.3 #1 0x2821fa40 in res_send () from /usr/lib/libc.so.3 #2 0x2821c245 in res_query () from /usr/lib/libc.so.3 #3 0x2821c7b7 in res_querydomain () from /usr/lib/libc.so.3 #4 0x2821c4a6 in res_search () from /usr/lib/libc.so.3 #5 0x280c14bb in dns_lookup () from /usr/lib/libkrb.so.3 #6 0x280bea4b in k_gethostname () from /usr/lib/libkrb.so.3 #7 0x280bebc5 in krb_realmofhost () from /usr/lib/libkrb.so.3 #8 0x280be8e0 in krb_get_lrealm () from /usr/lib/libkrb.so.3 #9 0x280bec3e in krb_realmofhost () from /usr/lib/libkrb.so.3 #10 0x280be8e0 in krb_get_lrealm () from /usr/lib/libkrb.so.3 #11 0x280bec3e in krb_realmofhost () from /usr/lib/libkrb.so.3 #12 0x280be8e0 in krb_get_lrealm () from /usr/lib/libkrb.so.3 #13 0x280bec3e in krb_realmofhost () from /usr/lib/libkrb.so.3 #14 0x280be8e0 in krb_get_lrealm () from /usr/lib/libkrb.so.3 ... ... continuing ... #58043 0x280bec3e in krb_realmofhost () from /usr/lib/libkrb.so.3 #58044 0x280be8e0 in krb_get_lrealm () from /usr/lib/libkrb.so.3 #58045 0x280bec3e in krb_realmofhost () from /usr/lib/libkrb.so.3 #58046 0x280be8e0 in krb_get_lrealm () from /usr/lib/libkrb.so.3 #58047 0x280bec3e in krb_realmofhost () from /usr/lib/libkrb.so.3 #58048 0x280be8e0 in krb_get_lrealm () from /usr/lib/libkrb.so.3 #58049 0x280bec3e in krb_realmofhost () from /usr/lib/libkrb.so.3 #58050 0x280be8e0 in krb_get_lrealm () from /usr/lib/libkrb.so.3 #58051 0x804ff0d in krb_check_password (pwd=0x282469fc, pass=0xbfbfcd90 "PW_replaced") at ./passwd.c:1519 #58052 0x804fe38 in checkPasswd (buffer=0xbfbfd1f0 "PW_replaced") at ./passwd.c:1173 #58053 0x804d604 in getPassword () at ./xlock.c:2318 #58054 0x804e04a in lockDisplay (display=0x8075000, do_display=1) at ./xlock.c:2635 #58055 0x804fb8d in main (argc=1, argv=0xbfbfd520) at ./xlock.c:3501 #58056 0x804b34d in _start () It seemed that there is a problem with krb_realmofhost() and krb_get_lrealm() which automagically are enabled when compiling xlockmore with MAKE_KERBEROS4=1 defined in /etc/make.conf.local. Fix: unknown How-To-Repeat: I could isolate the problem with the following small test program which has to be compiled with: cc k4test.c -lkrb -ldes -------------------------- snip ---------------------------------- #include <stdio.h> #include <krb.h> #include <des.h> #include <netinet/in.h> main() { fprintf( stderr, "%s\n", krb_realmofhost( "schlappy" )); } -------------------------- snap ---------------------------------- The program spins around as xlock does. This stops immediately when the hostname "schlappy" is additionally included with any domain appended in /etc/hosts, e.g. 192.168.254.254 schlappy.domain.org schlappy sc