linux-kernel - Re: [stable] [uml-devel] linux-2.6.32 uml Segmentation fault

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Message-ID: <20100104223917.GB20708@kroah.com>
Date:	Mon, 4 Jan 2010 14:39:17 -0800
From:	Greg KH <greg@...ah.com>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	clownix <clownix@...wnix.net>, David Howells <dhowells@...hat.com>,
	James Morris <jmorris@...ei.org>, stable <stable@...nel.org>,
	uml-user <user-mode-linux-user@...ts.sourceforge.net>,
	uml-devel <user-mode-linux-devel@...ts.sourceforge.net>,
	linux-kernel@...r.kernel.org
Subject: Re: [stable] [uml-devel] linux-2.6.32 uml Segmentation fault

On Sun, Dec 20, 2009 at 10:07:03AM +0100, Geert Uytterhoeven wrote:
> On Sat, Dec 19, 2009 at 12:33, clownix <clownix@...wnix.net> wrote:
> > Hello
> > For the 2.6.32 kernel there are 2 problems:
> >
> > 1: Compile error, this patch works for it:
> > --------------------------------------------
> >
> > diff -Naur old_linux-2.6.32.1/security/keys/keyctl.c
> > linux-2.6.32.1/security/keys/keyctl.c
> > --- old_linux-2.6.32.1/security/keys/keyctl.c   2009-12-14
> > 18:47:25.000000000 +0100
> > +++ linux-2.6.32.1/security/keys/keyctl.c       2009-12-15 22:40:32.565286766
> > +0100
> > @@ -1236,6 +1236,7 @@
> >  */
> >  long keyctl_session_to_parent(void)
> >  {
> > +#ifdef TIF_NOTIFY_RESUME
> >        struct task_struct *me, *parent;
> >        const struct cred *mycred, *pcred;
> >        struct cred *cred, *oldcred;
> > @@ -1326,6 +1327,9 @@
> >  error_keyring:
> >        key_ref_put(keyring_r);
> >        return ret;
> > +#else /* !TIF_NOTIFY_RESUME */
> > +       return -EOPNOTSUPP;
> > +#endif /* !TIF_NOTIFY_RESUME */
> >  }
> 
> Aha, UML is also affected.
> 
> Commit a00ae4d21b2fa9379914f270ffffd8d3bec55430 ("Keys:
> KEYCTL_SESSION_TO_PARENT needs TIF_NOTIFY_RESUME architecture
> support") should be in 2.6.32-stable as it fixes a regression, but
> apparently the `Cc: stable@...nel.org' got lost?

Now queued up, thanks for letting me know.

greg k-h
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