Re: 2.6.27-rc1 + selinux new options = no httpd

[Al Viro <viro@ZenIV.linux.org.uk>]

On Fri, Aug 01, 2008 at 08:51:08AM -0400, Stephen Smalley wrote:
> 
> On Thu, 2008-07-31 at 10:44 -0400, Eric Paris wrote:
> > On Thu, 2008-07-31 at 09:09 -0400, Gene Heskett wrote:
> > > On Thursday 31 July 2008, James Morris wrote:
> > 
> > > >What AVC messages are you seeing?
> > > 
> > > I posted the whole screen from setroubleshoot earlier.
> > 
> > I'm sorry but I can't seem to find it in your original message...
> > 
> > http://marc.info/?l=linux-kernel&m=121747333012971&w=2
> > 
> > Do you have another pointer?  I can't think of anything that went into
> > 2.6.27 related to SELinux that should have in any way changed file
> > access checks but I'll poke through the changelog and see if something
> > stands out...
> 
> It could be the append bug introduced by the vfs changes.
> See:
> http://marc.info/?l=linux-kernel&m=121726661110266&w=2
> 
> That would break any case where only append permission is granted (not
> full write access), as would be typical for httpd log files.

commit d54bb7a971b41b8a4baba6e3d9adf14ce035947f
Author: Stephen Smalley <sds@tycho.nsa.gov>
Date:   Mon Jul 28 13:32:38 2008 -0400

    Re: BUG at security/selinux/avc.c:883 (was: Re: linux-next: Tree
    for July 17: early crash on x86-64)

in vfs-2.6.git/for-next (and for-linus as well)