Patch "ARM: 8670/1: V7M: Do not corrupt vector table around v7m_invalidate_l1 call" has been added to the 4.11-stable tree

This is a note to let you know that I've just added the patch titled

ARM: 8670/1: V7M: Do not corrupt vector table around v7m_invalidate_l1 call

to the 4.11-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:

     arm-8670-1-v7m-do-not-corrupt-vector-table-around-v7m_invalidate_l1-call.patch

and it can be found in the queue-4.11 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Vladimir Murzin <[email protected]>
Date: Mon, 24 Apr 2017 10:40:48 +0100
Subject: ARM: 8670/1: V7M: Do not corrupt vector table around v7m_invalidate_l1 call

From: Vladimir Murzin <[email protected]>

commit 6d80594936914e798b1b54b3bfe4bd68d8418966 upstream.

We save/restore registers around v7m_invalidate_l1 to address pointed by r12, which is vector table, so the first eight entries are overwritten with a garbage. We already have stack setup at that stage, so use it to save/restore register.

---
 arch/arm/mm/proc-v7m.S |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

@@ -147,10 +147,10 @@ __v7m_setup_cont:
 
 	@ Configure caches (if implemented)
 	teq     r8, #0
-	stmneia	r12, {r0-r6, lr}	@ v7m_invalidate_l1 touches r0-r6
+	stmneia	sp, {r0-r6, lr}		@ v7m_invalidate_l1 touches r0-r6
 	blne	v7m_invalidate_l1
 	teq     r8, #0			@ re-evalutae condition
-	ldmneia	r12, {r0-r6, lr}
+	ldmneia	sp, {r0-r6, lr}
 
 	@ Configure the System Control Register to ensure 8-byte stack alignment
 	@ Note the STKALIGN bit is either RW or RAO.

Patches currently in stable-queue which might be from [email protected] are

queue-4.11/arm-8670-1-v7m-do-not-corrupt-vector-table-around-v7m_invalidate_l1-call.patch