CRED: Allow put_cred() to cope with a NULL groups list
put_cred() will oops if given a NULL groups list, but that is now possible with
the existence of cred_alloc_blank(), as used in keyctl_session_to_parent().
Added in commit:
commit
ee18d64c1f632043a02e6f5ba5e045bb26a5465f
Author: David Howells <dhowells@redhat.com>
Date: Wed Sep 2 09:14:21 2009 +0100
KEYS: Add a keyctl to install a process's session keyring on its parent [try #6]
Reported-by: Marc Dionne <marc.c.dionne@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>