Problem with mutex lock when using credential cache file

[Markus Moeller]

I have an application that does a krb5_get_init_creds_keytab and stores the 
data in a (memory) credential cache. When the application establishes 
parallel connections with sasl/gssapi authentication or one shortly after 
the other I get a " GSSAPI Error: Miscellaneous failure (Invalid argument)" 
error. I debugged  it down to the error code of k5_mutex_lock (error code 
22) somewhere in the cache handling functions. Does anybody know what the 
reason for this error is ? It is pretty impossible to follow the 
k5_mutex_lock inline (re)definitions.

I am using OpenSolaris 10.1 with krb5-1.4.3.

Thanks
Markus