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

[Geert Uytterhoeven]

On Sat, Dec 19, 2009 at 12:33, clownix <clownix@xxxxxxxxxxx> 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 @@
> Â*/
> Âlong keyctl_session_to_parent(void)
> Â{
> +#ifdef TIF_NOTIFY_RESUME
> Â Â Â Âstruct task_struct *me, *parent;
> Â Â Â Âconst struct cred *mycred, *pcred;
> Â Â Â Âstruct cred *cred, *oldcred;
> @@ -1326,6 +1327,9 @@
> Âerror_keyring:
> Â Â Â Âkey_ref_put(keyring_r);
> Â Â Â Âreturn ret;
> +#else /* !TIF_NOTIFY_RESUME */
> + Â Â Â return -EOPNOTSUPP;
> +#endif /* !TIF_NOTIFY_RESUME */
> Â}

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@xxxxxxxxxx' got lost?

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds
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