This is a note to let you know that I've just added the patch titled
s390/futex: add missing EX_TABLE entry to __futex_atomic_op()
to the 4.9-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:
s390-futex-add-missing-ex_table-entry-to-__futex_atomic_op.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a262d3ad6a433e4080cecd0a8841104a5906355e Mon Sep 17 00:00:00 2001
From: Heiko Carstens <hca@xxxxxxxxxxxxx>
Date: Tue, 18 Oct 2022 13:44:11 +0200
Subject: s390/futex: add missing EX_TABLE entry to __futex_atomic_op()
From: Heiko Carstens <hca@xxxxxxxxxxxxx>
commit a262d3ad6a433e4080cecd0a8841104a5906355e upstream.
For some exception types the instruction address points behind the
instruction that caused the exception. Take that into account and add
the missing exception table entry.
Cc: <stable@xxxxxxxxxxxxxxx>
Reviewed-by: Vasily Gorbik <gor@xxxxxxxxxxxxx>
Signed-off-by: Heiko Carstens <hca@xxxxxxxxxxxxx>
Signed-off-by: Vasily Gorbik <gor@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/s390/include/asm/futex.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/arch/s390/include/asm/futex.h
+++ b/arch/s390/include/asm/futex.h
@@ -15,7 +15,8 @@
"3: jl 1b\n" \
" lhi %0,0\n" \
"4: sacf 768\n" \
- EX_TABLE(0b,4b) EX_TABLE(2b,4b) EX_TABLE(3b,4b) \
+ EX_TABLE(0b,4b) EX_TABLE(1b,4b) \
+ EX_TABLE(2b,4b) EX_TABLE(3b,4b) \
: "=d" (ret), "=&d" (oldval), "=&d" (newval), \
"=m" (*uaddr) \
: "0" (-EFAULT), "d" (oparg), "a" (uaddr), \
Patches currently in stable-queue which might be from hca@xxxxxxxxxxxxx are
queue-4.9/s390-futex-add-missing-ex_table-entry-to-__futex_atomic_op.patch
