62 lines
2.1 KiB
Diff
62 lines
2.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Peter Zijlstra <peterz@infradead.org>
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Date: Tue, 5 Dec 2017 13:34:49 +0100
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Subject: [PATCH] x86/mm: Use __flush_tlb_one() for kernel memory
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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CVE-2017-5754
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__flush_tlb_single() is for user mappings, __flush_tlb_one() for
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kernel mappings.
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Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Cc: Andy Lutomirski <luto@kernel.org>
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Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
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Cc: Borislav Petkov <bp@alien8.de>
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Cc: Brian Gerst <brgerst@gmail.com>
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Cc: Dave Hansen <dave.hansen@linux.intel.com>
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Cc: David Laight <David.Laight@aculab.com>
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Cc: Denys Vlasenko <dvlasenk@redhat.com>
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Cc: Eduardo Valentin <eduval@amazon.com>
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Cc: Greg KH <gregkh@linuxfoundation.org>
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Cc: H. Peter Anvin <hpa@zytor.com>
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Cc: Josh Poimboeuf <jpoimboe@redhat.com>
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Cc: Juergen Gross <jgross@suse.com>
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Cc: Linus Torvalds <torvalds@linux-foundation.org>
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Cc: Peter Zijlstra <peterz@infradead.org>
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Cc: Will Deacon <will.deacon@arm.com>
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Cc: aliguori@amazon.com
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Cc: daniel.gruss@iaik.tugraz.at
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Cc: hughd@google.com
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Cc: keescook@google.com
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Cc: linux-mm@kvack.org
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Signed-off-by: Ingo Molnar <mingo@kernel.org>
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(cherry picked from commit a501686b2923ce6f2ff2b1d0d50682c6411baf72)
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Signed-off-by: Andy Whitcroft <apw@canonical.com>
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Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
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(cherry picked from commit 9d23f46143933cd29576b6aa2b1827f3f39b9cf8)
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Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
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---
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arch/x86/mm/tlb.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
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index ed06f1593390..5b4342c5039c 100644
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--- a/arch/x86/mm/tlb.c
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+++ b/arch/x86/mm/tlb.c
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@@ -546,7 +546,7 @@ static void do_kernel_range_flush(void *info)
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/* flush range by one by one 'invlpg' */
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for (addr = f->start; addr < f->end; addr += PAGE_SIZE)
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- __flush_tlb_single(addr);
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+ __flush_tlb_one(addr);
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}
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void flush_tlb_kernel_range(unsigned long start, unsigned long end)
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--
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2.14.2
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