linux-kernel - Re: [do_execve] attempted to set unsupported pgprot

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Message-ID: <e8f57e63-2657-6193-55e0-b097363ec97a@linux.intel.com>
Date:   Thu, 19 Apr 2018 14:26:15 -0700
From:   Dave Hansen <dave.hansen@...ux.intel.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Fengguang Wu <fengguang.wu@...el.com>
Cc:     Linux Memory Management List <linux-mm@...ck.org>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Kees Cook <keescook@...omium.org>,
        Serge Hallyn <serge@...lyn.com>,
        James Morris <james.l.morris@...cle.com>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        lkp@...org
Subject: Re: [do_execve] attempted to set unsupported pgprot

On 04/18/2018 12:59 PM, Andrew Morton wrote:
> Dave, fb43d6cb91ef57 ("x86/mm: Do not auto-massage page protections")
> looks like a culprit?

This looks like a problem when a 32-bit kernel runs on hardware without
NX support.  I'm digging into it but haven't found a root cause yet.