Re: [PATCH AUTOSEL 5.15 5/9] x86/mm: Disallow vsyscall page read for copy_from_kernel_nofault()

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Subject: Re: [PATCH AUTOSEL 5.15 5/9] x86/mm: Disallow vsyscall page read for copy_from_kernel_nofault()
From: "Guilherme G. Piccoli" <gpiccoli@xxxxxxxxxx>
Date: Mon, 11 Mar 2024 19:01:58 -0300
Cc: Alexei Starovoitov <ast@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, bpf <bpf@xxxxxxxxxxxxxxx>, "dave.hansen@xxxxxxxxxxxxxxx" <dave.hansen@xxxxxxxxxxxxxxx>, houtao1@xxxxxxxxxx, linux-kernel <linux-kernel@xxxxxxxxxxxxxxx>, "luto@xxxxxxxxxx" <luto@xxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, stable@xxxxxxxxxxxxxxx, "x86@xxxxxxxxxx" <x86@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, sohil.mehta@xxxxxxxxx, xrivendell7@xxxxxxxxx
In-reply-to: <20240229204107.2861780-5-sashal@kernel.org>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.15.1

Hi Sasha et. al.,

thanks for this backport! I'm not sure how common is to send a Tested-by
to stable in these cases, but since I tested this one anyway, given that
I was working with this syzkaller report...feel free to add my:


Tested-by: Guilherme G. Piccoli <gpiccoli@xxxxxxxxxx> # v5.15.y

Cheers,


Guilherme

References:
- [PATCH AUTOSEL 5.15 5/9] x86/mm: Disallow vsyscall page read for copy_from_kernel_nofault()
  - From: Sasha Levin

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