Comment 4 for bug 475619

What is happen is removal of children profiles results in a ERR_PTR replacing the profile in the cred field. This used to be the way AppArmor indicated profile removal, but is no longer valid, the ERR_PTR gets filtered to a null pointer but the cred code now expects a profile and oops.

test kernel
http://kernel.ubuntu.com/~jj/linux-image-2.6.31-15-generic_2.6.31-15.50~jj_amd64.deb