This is a note to let you know that I've just added the patch titled
parisc/unaligned: Fix emulate_ldw() breakage
to the 5.18-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:
parisc-unaligned-fix-emulate_ldw-breakage.patch
and it can be found in the queue-5.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 96b80fcd2705fc50ebe1f7f3ce204e861b3099ab Mon Sep 17 00:00:00 2001
From: Helge Deller <deller@xxxxxx>
Date: Mon, 27 Jun 2022 01:39:11 +0200
Subject: parisc/unaligned: Fix emulate_ldw() breakage
From: Helge Deller <deller@xxxxxx>
commit 96b80fcd2705fc50ebe1f7f3ce204e861b3099ab upstream.
The commit e8aa7b17fe41 broke the 32-bit load-word unalignment exception
handler because it calculated the wrong amount of bits by which the value
should be shifted. This patch fixes it.
Signed-off-by: Helge Deller <deller@xxxxxx>
Fixes: e8aa7b17fe41 ("parisc/unaligned: Rewrite inline assembly of emulate_ldw()")
Cc: stable@xxxxxxxxxxxxxxx # v5.18
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/parisc/kernel/unaligned.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/parisc/kernel/unaligned.c b/arch/parisc/kernel/unaligned.c
index ed1e88a74dc4..bac581b5ecfc 100644
--- a/arch/parisc/kernel/unaligned.c
+++ b/arch/parisc/kernel/unaligned.c
@@ -146,7 +146,7 @@ static int emulate_ldw(struct pt_regs *regs, int toreg, int flop)
" depw %%r0,31,2,%4\n"
"1: ldw 0(%%sr1,%4),%0\n"
"2: ldw 4(%%sr1,%4),%3\n"
-" subi 32,%4,%2\n"
+" subi 32,%2,%2\n"
" mtctl %2,11\n"
" vshd %0,%3,%0\n"
"3: \n"
--
2.37.0
Patches currently in stable-queue which might be from deller@xxxxxx are
queue-5.18/parisc-unaligned-fix-emulate_ldw-breakage.patch
queue-5.18/parisc-fix-vdso-signal-breakage-on-32-bit-kernel.patch
