From: <gregkh@linuxfoundation.org>
To: luto@kernel.org, bp@alien8.de, brgerst@gmail.com,
dvlasenk@redhat.com, gregkh@linuxfoundation.org, hpa@zytor.com,
jpoimboe@redhat.com, mingo@kernel.org, peterz@infradead.org,
tglx@linutronix.de, torvalds@linux-foundation.org
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "x86/asm/64: Clear AC on NMI entries" has been added to the 4.12-stable tree
Date: Sun, 20 Aug 2017 12:01:20 -0700 [thread overview]
Message-ID: <1503255680245153@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
x86/asm/64: Clear AC on NMI entries
to the 4.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
x86-asm-64-clear-ac-on-nmi-entries.patch
and it can be found in the queue-4.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From e93c17301ac55321fc18e0f8316e924e58a83c8c Mon Sep 17 00:00:00 2001
From: Andy Lutomirski <luto@kernel.org>
Date: Mon, 7 Aug 2017 19:43:13 -0700
Subject: x86/asm/64: Clear AC on NMI entries
From: Andy Lutomirski <luto@kernel.org>
commit e93c17301ac55321fc18e0f8316e924e58a83c8c upstream.
This closes a hole in our SMAP implementation.
This patch comes from grsecurity. Good catch!
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/314cc9f294e8f14ed85485727556ad4f15bb1659.1502159503.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/entry/entry_64.S | 2 ++
1 file changed, 2 insertions(+)
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -1209,6 +1209,8 @@ ENTRY(nmi)
* other IST entries.
*/
+ ASM_CLAC
+
/* Use %rdx as our temp variable throughout */
pushq %rdx
Patches currently in stable-queue which might be from luto@kernel.org are
queue-4.12/x86-asm-64-clear-ac-on-nmi-entries.patch
queue-4.12/perf-x86-fix-rdpmc-vs.-mm_struct-tracking.patch
reply other threads:[~2017-08-20 19:01 UTC|newest]
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