What krb5 implementation is this?
This error is a double-free in the krb5 library.

Send a bug report to the krb5 library maintainers.

Jeffrey Altman

Adam Megacz wrote:
> Hrm, further weirdness.  This time there's no Rx error, but "vos dump"
> simply sits there at 0% cpu utilization.  Worse, something appears to
> be unhappy in the afs client; I did this
> 
>   $ aklog -c megacz.com
>   aklog: Couldn't get megacz.com AFS tickets:
>   aklog: Credentials cache I/O operation failed XXX while getting AFS tickets
>   $ aklog -c megacz.com
>   *** glibc detected *** double free or corruption (!prev): 0x0809e1e0 ***
>   Aborted
> 
>   (gdb) bt
>   #0  0xb7d9c947 in raise () from /lib/tls/libc.so.6
>   #1  0xb7d9e0c9 in abort () from /lib/tls/libc.so.6
>   #2  0xb7dd216a in __fsetlocking () from /lib/tls/libc.so.6
>   #3  0xb7dd9a2f in mallopt () from /lib/tls/libc.so.6
>   #4  0xb7dd9ad2 in free () from /lib/tls/libc.so.6
>   #5  0xb7f303db in krb5_free_cred_contents () from /usr/lib/libkrb5.so.3
>   #6  0xb7f14127 in krb5_get_notification_message () from 
> /usr/lib/libkrb5.so.3
>   #7  0xb7f1c507 in krb5_cc_next_cred () from /usr/lib/libkrb5.so.3
>   #8  0xb7f10566 in krb5int_cc_creds_match_request () from 
> /usr/lib/libkrb5.so.3
>   #9  0xb7f107ca in krb5_cc_retrieve_cred_default () from 
> /usr/lib/libkrb5.so.3
>   #10 0xb7f16089 in krb5_get_notification_message () from 
> /usr/lib/libkrb5.so.3
>   #11 0xb7f1c47e in krb5_cc_retrieve_cred () from /usr/lib/libkrb5.so.3
>   #12 0xb7f2aed6 in krb5_get_credentials () from /usr/lib/libkrb5.so.3
>   
> I should note that we are performing "vos dump" on the fileserver
> machine itself, and the dump output is being piped to a directory in
> /afs/ which is part of a different cell.  Bizarre, yes, but this
> should work, right?
> 
> I've sent the tcpdump to Derrick.
> 
>   - a

Attachment: smime.p7s
Description: S/MIME Cryptographic Signature

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