Patch "s390: fix compat system call table" has been added to the 4.4-stable tree

Patch "s390: fix compat system call table" has been added to the 4.4-stable tree

[gregkh]

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

    s390: fix compat system call table

to the 4.4-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-fix-compat-system-call-table.patch
and it can be found in the queue-4.4 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 e779498df587dd2189b30fe5b9245aefab870eb8 Mon Sep 17 00:00:00 2001
From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Wed, 6 Dec 2017 16:11:27 +0100
Subject: s390: fix compat system call table

From: Heiko Carstens <heiko.carstens@de.ibm.com>

commit e779498df587dd2189b30fe5b9245aefab870eb8 upstream.

When wiring up the socket system calls the compat entries were
incorrectly set. Not all of them point to the corresponding compat
wrapper functions, which clear the upper 33 bits of user space
pointers, like it is required.

Fixes: 977108f89c989 ("s390: wire up separate socketcalls system calls")
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/s390/kernel/syscalls.S |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/arch/s390/kernel/syscalls.S
+++ b/arch/s390/kernel/syscalls.S
@@ -369,10 +369,10 @@ SYSCALL(sys_recvmmsg,compat_sys_recvmmsg
 SYSCALL(sys_sendmmsg,compat_sys_sendmmsg)
 SYSCALL(sys_socket,sys_socket)
 SYSCALL(sys_socketpair,compat_sys_socketpair)		/* 360 */
-SYSCALL(sys_bind,sys_bind)
-SYSCALL(sys_connect,sys_connect)
+SYSCALL(sys_bind,compat_sys_bind)
+SYSCALL(sys_connect,compat_sys_connect)
 SYSCALL(sys_listen,sys_listen)
-SYSCALL(sys_accept4,sys_accept4)
+SYSCALL(sys_accept4,compat_sys_accept4)
 SYSCALL(sys_getsockopt,compat_sys_getsockopt)		/* 365 */
 SYSCALL(sys_setsockopt,compat_sys_setsockopt)
 SYSCALL(sys_getsockname,compat_sys_getsockname)


Patches currently in stable-queue which might be from heiko.carstens@de.ibm.com are

queue-4.4/s390-fix-compat-system-call-table.patch