linux-kernel - [PATCH 0/2] x86/mm: More KASAN per-CPU CEA mapping bug fixes

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Message-ID: <20221104220053.1702977-1-seanjc@google.com>
Date:   Fri,  4 Nov 2022 22:00:51 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     linux-kernel@...r.kernel.org,
        Andrey Ryabinin <ryabinin.a.a@...il.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>
Subject: [PATCH 0/2] x86/mm: More KASAN per-CPU CEA mapping bug fixes

Two more bug fixes from the gift that keeps on giving.  Both of these were
found by inspection, and both are lightly tested.  I'm pretty confident
that patch 01 fixes a real bug, somewhat less so about patch 02, though
given the other issues I debugged I don't see anything that prevents the
DS buffers from exploding.

Sean Christopherson (2):
  x86/mm: Recompute physical address for every page of per-CPU CEA
    mapping
  x86/mm: Populate KASAN shadow for per-CPU DS buffers in CPU entry area

 arch/x86/mm/cpu_entry_area.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)


base-commit: 3301badde43dee7c2a013fbd6479c258366519da
-- 
2.38.1.431.g37b22c650d-goog