From: Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>
To: Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>
Cc: ard.biesheuvel-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH] efi/arm*: Only register page tables when they exist
Date: Wed, 17 Jan 2018 10:19:23 +0000 [thread overview]
Message-ID: <20180117101922.GB27892@arm.com> (raw)
In-Reply-To: <20180116140832.26731-1-mark.rutland-5wv7dgnIgG8@public.gmane.org>
On Tue, Jan 16, 2018 at 02:08:32PM +0000, Mark Rutland wrote:
> Currently the arm/arm64 runtime code registers the runtime servies
> pagetables with ptdump regardless of whether runtime services page
> tables have been created.
>
> As efi_mm.pgd is NULL in these cases, attempting to dump the efi page
> tables results in a NULL pointer dereference in the ptdump code:
Acked-by: Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>
Ard -- please can you pick this one up?
Cheers,
Will
next prev parent reply other threads:[~2018-01-17 10:19 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-16 14:08 [PATCH] efi/arm*: Only register page tables when they exist Mark Rutland
[not found] ` <20180116140832.26731-1-mark.rutland-5wv7dgnIgG8@public.gmane.org>
2018-01-17 10:19 ` Will Deacon [this message]
[not found] ` <20180117101922.GB27892-5wv7dgnIgG8@public.gmane.org>
2018-01-17 12:01 ` Ard Biesheuvel
[not found] ` <CAKv+Gu_xB2XywijC0VMY48uR212pOnm7dFzOAp2ozevHC7fRSA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-01-23 18:50 ` Ard Biesheuvel
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