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[81.169.241.247]) by mx.google.com with ESMTPS id k1si18415034wrn.392.2019.07.15.04.02.23 for (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Mon, 15 Jul 2019 04:02:23 -0700 (PDT) Received-SPF: pass (google.com: domain of joro@8bytes.org designates 81.169.241.247 as permitted sender) client-ip=81.169.241.247; Authentication-Results: mx.google.com; spf=pass (google.com: domain of joro@8bytes.org designates 81.169.241.247 as permitted sender) smtp.mailfrom=joro@8bytes.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=8bytes.org Received: by theia.8bytes.org (Postfix, from userid 1000) id 33E522B0; Mon, 15 Jul 2019 13:02:22 +0200 (CEST) From: Joerg Roedel To: Dave Hansen , Andy Lutomirski , Peter Zijlstra , Thomas Gleixner , Ingo Molnar , Borislav Petkov Cc: Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Joerg Roedel Subject: [PATCH 0/3] Sync unmappings in vmalloc/ioremap areas Date: Mon, 15 Jul 2019 13:02:09 +0200 Message-Id: <20190715110212.18617-1-joro@8bytes.org> X-Mailer: git-send-email 2.17.1 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hi, here is a small patch-set to sync unmappings in the vmalloc/ioremap areas between page-tables in the system. This is only needed x86-32 with !SHARED_KERNEL_PMD, which is the case on a PAE kernel with PTI enabled. On affected systems the missing sync causes old mappings to persist in some page-tables, causing data corruption and other undefined behavior. Please review. Thanks, Joerg Joerg Roedel (3): x86/mm: Check for pfn instead of page in vmalloc_sync_one() x86/mm: Sync also unmappings in vmalloc_sync_one() mm/vmalloc: Sync unmappings in vunmap_page_range() arch/x86/mm/fault.c | 9 +++++---- mm/vmalloc.c | 2 ++ 2 files changed, 7 insertions(+), 4 deletions(-) -- 2.17.1