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Message-ID: <alpine.DEB.2.11.1507262041590.18576@nanos> Date: Sun, 26 Jul 2015 20:42:16 +0200 (CEST) From: Thomas Gleixner <tglx@...utronix.de> To: Vasily Kulikov <segoon@...nwall.com> cc: linux-kernel@...r.kernel.org, Randy Dunlap <rdunlap@...radead.org>, Andrew Morton <akpm@...ux-foundation.org>, kernel-hardening@...ts.openwall.com, "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com> Subject: Re: [PATCH 2/3] use POISON_POINTER_DELTA for poison pointers On Sun, 26 Jul 2015, Vasily Kulikov wrote: > TIMER_ENTRY_STATIC and TAIL_MAPPING are defined as poison pointers which > should point to nowhere. Redefine them using POISON_POINTER_DELTA arithmetics > to make sure they really point to non-mappable area declared by the > target architecture. > > Signed-off-by: Vasily Kulikov <segoon@...nwall.com> > --- > include/linux/poison.h | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/include/linux/poison.h b/include/linux/poison.h > index ee697b9..a721bcd 100644 > --- a/include/linux/poison.h > +++ b/include/linux/poison.h > @@ -27,14 +27,14 @@ > * Magic number "tsta" to indicate a static timer initializer > * for the object debugging code. > */ > -#define TIMER_ENTRY_STATIC ((void *) 0x74737461) > +#define TIMER_ENTRY_STATIC ((void *) 0x300 + POISON_POINTER_DELTA) Acked-by: Thomas Gleixner <tglx@...utronix.de> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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