linux-kernel - Re: [PATCH qemu v3] x86: don't let decompressed kernel image clobber setup

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Message-ID: <Y72FmQlNwBsp8Ntc@zx2c4.com>
Date:   Tue, 10 Jan 2023 16:34:49 +0100
From:   "Jason A. Donenfeld" <Jason@...c4.com>
To:     "Michael S. Tsirkin" <mst@...hat.com>,
        Marcel Apfelbaum <marcel.apfelbaum@...il.com>
Cc:     Peter Maydell <peter.maydell@...aro.org>, philmd@...aro.org,
        pbonzini@...hat.com, ebiggers@...nel.org,
        Mathias Krause <minipli@...ecurity.net>, qemu-devel@...gnu.org
Subject: Re: [PATCH qemu v3] x86: don't let decompressed kernel image clobber
 setup_data

Hi Michael,

Could you queue up this patch and mark it as a fix for 7.2.1? It is a
straight-up bug fix for a 7.2 regression that's now affected several
users.

- It has two Tested-by tags on the thread.
- hpa, the maintainer of the kernel side of this, confirmed on one of
  the various tributary threads that this approach is a correct one.
- It doesn't introduce any new functionality.

For your convenience, you can grab this out of lore here:

  https://lore.kernel.org/lkml/20221230220725.618763-1-Jason@zx2c4.com/

Or if you want to yolo it:

  curl https://lore.kernel.org/lkml/20221230220725.618763-1-Jason@zx2c4.com/raw | git am -s

It's now sat silent on the mailing list for a while. So let's please get
this committed and backported so that the bug reports stop coming in.

Thanks,
Jason