[Samba] Samba 3.4 Panic in Debian

[Volker Lendecke]

On Wed, Jan 27, 2010 at 04:05:46AM -0800, Steve Langasek wrote:
> On Tue, Jan 26, 2010 at 02:22:36PM -0800, Steve Langasek wrote:
> > On Tue, Jan 26, 2010 at 05:03:51PM -0500, Sam Hartman wrote:
> > > >>>>> "Steve" == Steve Langasek <vorlon at debian.org> writes:
> 
> > >     Steve> On Tue, Jan 26, 2010 at 01:29:08PM -0500, Sam Hartman wrote:
> > >     >> OK.  Can someone on the Samba side confirm that the Linux kernel
> > >     >> only supports DES for some Samba related Kerberos operation?
> > >     >> Specific details on what is going on would be useful.
> 
> > >     Steve> The kernel is only involved when one is using CIFS mounts,
> > >     Steve> which aren't relevant to winbind and domain joining; so this
> > >     Steve> shouldn't be a kernel issue.
> 
> > > OK.  Then I currently have no idea why allow_weak_crypto would be
> > > desirable for Samba.
> 
> > In the case of AD realms that were continuously upgraded from NT4 domains,
> > you may have accounts only using RC4 as an enctype for
> > backwards-compatibility with pre-AD systems.  I don't know if this is the
> > reason these users are seeing problems, but it's the only case I can think
> > of why allow_weak_crypto should be needed.
> 
> Sorry, having looked at the source now, I see that the weak crypto handling
> is specific to DES, not RC4; and if Samba were *only* using RC4, this error
> would not happen.
> 
> However, Samba requests both RC4 and DES, a historical remnant of the time
> when DES was the only enctype in common between all Kerberos
> implementations.

Referring to the SUBJECT: Where is this leading to a panic
in Samba 3.4, I got lost in the meantime.

Volker
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