[15656] in Kerberos_V5_Development
Re: Strange segmentation fault in libkrb5.so.3.3 (1.6.4-beta1)
daemon@ATHENA.MIT.EDU (Russ Allbery)
Thu Apr 8 14:50:26 2010
From: Russ Allbery <rra@stanford.edu>
To: Dan Searle <dan.searle@censornet.com>
In-Reply-To: <4BBDCBE3.6060301@censornet.com> (Dan Searle's message of "Thu,
08 Apr 2010 13:28:19 +0100")
Date: Thu, 08 Apr 2010 11:50:19 -0700
Message-ID: <87vdc1n5hw.fsf@windlord.stanford.edu>
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Dan Searle <dan.searle@censornet.com> writes:
> Ok, authenticating a user against a Windows 2008R2 KDC with an expired
> passwords is a 100% sure way of recreating this error. I've recreated
> the error using an Ubuntu source package to compile version
> krb5-1.6.dfsg.3~beta1 from sources with debug symbols, and here's the
> gdb stack trace I get:
> #0 0xb7f9838b in ?? () from /lib/ld-linux.so.2
> #1 0xb7f9dc80 in ?? () from /lib/ld-linux.so.2
> #2 0xb70c087d in krb5_get_error_message (ctx=0x8220428,
> code=-1765328324) at ../../../../src/lib/krb5/krb/kerrs.c:87
> #3 0x7de66ec4 in ?? () from /lib/security/pam_krb5.so
> #4 0x7de6745f in ?? () from /lib/security/pam_krb5.so
> #5 0x7de6623a in ?? () from /lib/security/pam_krb5.so
> #6 0x7de640be in pam_sm_authenticate () from /lib/security/pam_krb5.so
> #7 0xb7df51c8 in ?? () from /lib/libpam.so.0
> #8 0xb7df4a8d in pam_authenticate () from /lib/libpam.so.0
> [snip]
> kerrs.c:87 corresponds to the following call:
> return krb5int_get_error (&ctx->err, code);
> krb5int_get_error is an exported symbol in the libkrb5support library,
> so what's going on with ld? Is it failing to find the symbol?
Could you build libpam-krb5 with debugging symbols as well? It would be
useful to see where that call to krb5_get_error_message is coming from.
--
Russ Allbery (rra@stanford.edu) <http://www.eyrie.org/~eagle/>
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