Re: [PATCH] [v2] x86/mpx: fix recursive munmap() corruption

From: Ingo Molnar
Date: Thu May 09 2019 - 04:32:45 EST

* Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> wrote:

> Reported-by: Richard Biener <rguenther@xxxxxxx>
> Reported-by: H.J. Lu <>
> Fixes: dd2283f2605e ("mm: mmap: zap pages with read mmap_sem in munmap")
> Cc: Yang Shi <yang.shi@xxxxxxxxxxxxxxxxx>
> Cc: Michal Hocko <mhocko@xxxxxxxx>
> Cc: Vlastimil Babka <vbabka@xxxxxxx>
> Cc: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
> Cc: x86@xxxxxxxxxx
> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> Cc: linux-mm@xxxxxxxxx
> Cc: stable@xxxxxxxxxxxxxxx
> Cc: linuxppc-dev@xxxxxxxxxxxxxxxx
> Cc: linux-um@xxxxxxxxxxxxxxxxxxx
> Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
> Cc: Paul Mackerras <paulus@xxxxxxxxx>
> Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
> Cc: linux-arch@xxxxxxxxxxxxxxx
> Cc: Guan Xuetao <gxt@xxxxxxxxxx>
> Cc: Jeff Dike <jdike@xxxxxxxxxxx>
> Cc: Richard Weinberger <richard@xxxxxx>
> Cc: Anton Ivanov <anton.ivanov@xxxxxxxxxxxxxxxxxx>

I've also added your:

Signed-off-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>

Because I suppose you intended to sign off on it?