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Message-ID: <fda48075-783d-1833-5f1c-c10ca2880a56@gmail.com>
Date: Mon, 14 Nov 2022 17:09:00 +0300
From: Andrey Ryabinin <ryabinin.a.a@...il.com>
To: Sean Christopherson <seanjc@...gle.com>,
Dave Hansen <dave.hansen@...ux.intel.com>,
Andy Lutomirski <luto@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
x86@...nel.org
Cc: "H. Peter Anvin" <hpa@...or.com>,
Alexander Potapenko <glider@...gle.com>,
Andrey Konovalov <andreyknvl@...il.com>,
Dmitry Vyukov <dvyukov@...gle.com>,
Vincenzo Frascino <vincenzo.frascino@....com>,
linux-kernel@...r.kernel.org, kasan-dev@...glegroups.com,
syzbot+ffb4f000dc2872c93f62@...kaller.appspotmail.com,
syzbot+8cdd16fd5a6c0565e227@...kaller.appspotmail.com
Subject: Re: [PATCH v2 1/5] x86/mm: Recompute physical address for every page
of per-CPU CEA mapping
On 11/10/22 23:35, Sean Christopherson wrote:
> Recompute the physical address for each per-CPU page in the CPU entry
> area, a recent commit inadvertantly modified cea_map_percpu_pages() such
> that every PTE is mapped to the physical address of the first page.
>
> Fixes: 9fd429c28073 ("x86/kasan: Map shadow for percpu pages on demand")
> Cc: Andrey Ryabinin <ryabinin.a.a@...il.com>
> Signed-off-by: Sean Christopherson <seanjc@...gle.com>
Reviewed-by: Andrey Ryabinin <ryabinin.a.a@...il.com>
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