From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:52672 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932968AbcKHQrD (ORCPT ); Tue, 8 Nov 2016 11:47:03 -0500 Subject: Patch "KVM: s390: Fix STHYI buffer alignment for diag224" has been added to the 4.8-stable tree To: frankja@linux.vnet.ibm.com, borntraeger@de.ibm.com, cornelia.huck@de.ibm.com, gregkh@linuxfoundation.org, holzheu@linux.vnet.ibm.com Cc: , From: Date: Tue, 08 Nov 2016 17:46:46 +0100 Message-ID: <14786236065059@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled KVM: s390: Fix STHYI buffer alignment for diag224 to the 4.8-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: kvm-s390-fix-sthyi-buffer-alignment-for-diag224.patch and it can be found in the queue-4.8 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 45c7ee43a5184ddbff652ee0d2e826f86f1b616b Mon Sep 17 00:00:00 2001 From: Janosch Frank Date: Wed, 26 Oct 2016 08:48:11 +0200 Subject: KVM: s390: Fix STHYI buffer alignment for diag224 From: Janosch Frank commit 45c7ee43a5184ddbff652ee0d2e826f86f1b616b upstream. Diag224 requires a page-aligned 4k buffer to store the name table into. kmalloc does not guarantee page alignment, hence we replace it with __get_free_page for the buffer allocation. Reported-by: Michael Holzheu Signed-off-by: Janosch Frank Reviewed-by: Cornelia Huck Signed-off-by: Christian Borntraeger Signed-off-by: Greg Kroah-Hartman --- arch/s390/kvm/sthyi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/arch/s390/kvm/sthyi.c +++ b/arch/s390/kvm/sthyi.c @@ -315,7 +315,7 @@ static void fill_diag(struct sthyi_sctns if (r < 0) goto out; - diag224_buf = kmalloc(PAGE_SIZE, GFP_KERNEL | GFP_DMA); + diag224_buf = (void *)__get_free_page(GFP_KERNEL | GFP_DMA); if (!diag224_buf || diag224(diag224_buf)) goto out; @@ -378,7 +378,7 @@ static void fill_diag(struct sthyi_sctns sctns->par.infpval1 |= PAR_WGHT_VLD; out: - kfree(diag224_buf); + free_page((unsigned long)diag224_buf); vfree(diag204_buf); } Patches currently in stable-queue which might be from frankja@linux.vnet.ibm.com are queue-4.8/kvm-s390-fix-sthyi-buffer-alignment-for-diag224.patch