Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jason Yan , Shaohua Li Subject: [PATCH 4.9 17/25] md: fix super_offset endianness in super_1_rdev_size_change Date: Thu, 13 Jul 2017 17:40:31 +0200 Message-Id: <20170713154002.626115731@linuxfoundation.org> In-Reply-To: <20170713154001.535209166@linuxfoundation.org> References: <20170713154001.535209166@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jason Yan commit 3fb632e40d7667d8bedfabc28850ac06d5493f54 upstream. The sb->super_offset should be big-endian, but the rdev->sb_start is in host byte order, so fix this by adding cpu_to_le64. Signed-off-by: Jason Yan Signed-off-by: Shaohua Li Signed-off-by: Greg Kroah-Hartman --- drivers/md/md.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -1861,7 +1861,7 @@ super_1_rdev_size_change(struct md_rdev } sb = page_address(rdev->sb_page); sb->data_size = cpu_to_le64(num_sectors); - sb->super_offset = rdev->sb_start; + sb->super_offset = cpu_to_le64(rdev->sb_start); sb->sb_csum = calc_sb_1_csum(sb); md_super_write(rdev->mddev, rdev, rdev->sb_start, rdev->sb_size, rdev->sb_page);