From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:52901 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933643AbcJTN3y (ORCPT ); Thu, 20 Oct 2016 09:29:54 -0400 Subject: Patch "b43legacy: fix debugfs crash" has been added to the 4.8-stable tree To: chunkeey@googlemail.com, chunkeey@gmail.com, gregkh@linuxfoundation.org, nicstange@gmail.com Cc: , From: Date: Thu, 20 Oct 2016 15:29:53 +0200 Message-ID: <1476970193244159@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 b43legacy: fix debugfs crash 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: b43legacy-fix-debugfs-crash.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 9c4a45b17e094a090e96beb1138e34c2a10c6b8c Mon Sep 17 00:00:00 2001 From: Christian Lamparter Date: Sat, 17 Sep 2016 21:43:04 +0200 Subject: b43legacy: fix debugfs crash From: Christian Lamparter commit 9c4a45b17e094a090e96beb1138e34c2a10c6b8c upstream. This patch fixes a crash that happens because b43legacy's debugfs code expects file->f_op to be a pointer to its own b43legacy_debugfs_fops struct. This is no longer the case since commit 9fd4dcece43a ("debugfs: prevent access to possibly dead file_operations at file open") Reviewed-by: Nicolai Stange Signed-off-by: Christian Lamparter Signed-off-by: Greg Kroah-Hartman --- drivers/net/wireless/broadcom/b43legacy/debugfs.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/drivers/net/wireless/broadcom/b43legacy/debugfs.c +++ b/drivers/net/wireless/broadcom/b43legacy/debugfs.c @@ -221,7 +221,8 @@ static ssize_t b43legacy_debugfs_read(st goto out_unlock; } - dfops = container_of(file->f_op, struct b43legacy_debugfs_fops, fops); + dfops = container_of(debugfs_real_fops(file), + struct b43legacy_debugfs_fops, fops); if (!dfops->read) { err = -ENOSYS; goto out_unlock; @@ -287,7 +288,8 @@ static ssize_t b43legacy_debugfs_write(s goto out_unlock; } - dfops = container_of(file->f_op, struct b43legacy_debugfs_fops, fops); + dfops = container_of(debugfs_real_fops(file), + struct b43legacy_debugfs_fops, fops); if (!dfops->write) { err = -ENOSYS; goto out_unlock; Patches currently in stable-queue which might be from chunkeey@googlemail.com are queue-4.8/b43-fix-debugfs-crash.patch queue-4.8/carl9170-fix-debugfs-crashes.patch queue-4.8/b43legacy-fix-debugfs-crash.patch queue-4.8/debugfs-introduce-a-public-file_operations-accessor.patch