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%3Ba=su...

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