linux-kernel - Re: [PATCH] x86/mm: fix overflow in __cpa

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Message-ID: <e7c10342-93c8-466f-8f23-7d256d016681@intel.com>
Date: Mon, 6 Oct 2025 15:22:42 -0700
From: Dave Hansen <dave.hansen@...el.com>
To: Rik van Riel <riel@...riel.com>,
 syzbot <syzbot+afec6555eef563c66c97@...kaller.appspotmail.com>
Cc: bp@...en8.de, dave.hansen@...ux.intel.com, hpa@...or.com, kas@...nel.org,
 kevin.brodsky@....com, linux-kernel@...r.kernel.org, luto@...nel.org,
 mingo@...hat.com, peterz@...radead.org, rppt@...nel.org,
 syzkaller-bugs@...glegroups.com, tglx@...utronix.de, wei.liu@...nel.org,
 x86@...nel.org, yu-cheng.yu@...el.com
Subject: Re: [PATCH] x86/mm: fix overflow in __cpa_addr

On 10/5/25 20:48, Rik van Riel wrote:
> Signed-off-by: Rik van Riel <riel@...riel.com>
> Cc: stable@...nel.org
> Reported-by: syzbot+afec6555eef563c66c97@...kaller.appspotmail.com
> Fixes: 86e6815b316e ("x86/mm: Change cpa_flush() to call flush_kernel_range() directly")

Hi Folks,

Thanks for the quick fix here!

But this doesn't need to go to stable, right? I think it just went to
Linus during the merge window last week so it never made it to a
release, so won't need a stable backport.