From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>,
mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org
Cc: linuxram@us.ibm.com, Sandipan Das <sandipan@linux.ibm.com>
Subject: Re: [PATCH] powerpc/book3s64/pkeys: Fix pkey_access_permitted w.r.t execute disable pkey
Date: Thu, 16 Jul 2020 22:47:47 +1000 (AEST) [thread overview]
Message-ID: <159490364649.3801815.17176115155878100262.b4-ty@ellerman.id.au> (raw)
In-Reply-To: <20200712132047.1038594-1-aneesh.kumar@linux.ibm.com>
On Sun, 12 Jul 2020 18:50:47 +0530, Aneesh Kumar K.V wrote:
> Even if the IAMR value deny the execute access, current kernel return true
> w.r.t pkey_access_permitted() for execute permission check if the AMR
> read pkey bit is cleared.
>
> This results in repeated page fault loop with a test like below.
>
> #define _GNU_SOURCE
> #include <errno.h>
> #include <stdio.h>
> #include <stdlib.h>
> #include <signal.h>
> #include <inttypes.h>
>
> [...]
Applied to powerpc/fixes.
[1/1] powerpc/book3s64/pkeys: Fix pkey_access_permitted() for execute disable pkey
https://git.kernel.org/powerpc/c/192b6a780598976feb7321ff007754f8511a4129
cheers
prev parent reply other threads:[~2020-07-16 12:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-12 13:20 [PATCH] powerpc/book3s64/pkeys: Fix pkey_access_permitted w.r.t execute disable pkey Aneesh Kumar K.V
2020-07-16 12:47 ` Michael Ellerman [this message]
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