SEGV in krb5_free_cred_contents

[Markus Moeller]

"Greg Hudson" <ghudson at MIT.EDU> wrote in message 
news:1256220048.23997.307.camel at ray...
> On Wed, 2009-10-21 at 19:20 -0400, Markus Moeller wrote:
>> I have an application which creates a cache, stores a ticket and then
>> destroys the cache, but sometimes I get a SEGV. This is on OpenSolaris 
>> (but
>> I think the code is the same as the MIT code).
> [...]
>> Do I need to check if the cache has credentials before a destroy the 
>> cache
>> ?
>
>>From reading the OpenSolaris and MIT krb5 code for memory ccaches, every
> entry in the ccache is supposed to have valid credentials; there is no
> operation which should put the credentials list into a state where one
> of the entries has ->creds == NULL.
>
> Because of optimization, it's hard to tell from your stack trace whether
> the credentials linked list structure has NULL credentials somehow, or
> if it's an invalid pointer.  Either way, the next question would be what
> operation caused the credentials structure to get into the invalid
> state.
>
>

I did debug and val is NIL, but I couldn't find yet why.  When I change my 
application to use a file cache (e.g. replace MEMORY: with FILE: ) it works 
fine.

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