From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from out3-smtp.messagingengine.com ([66.111.4.27]:38313 "EHLO out3-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757981AbdLRL6n (ORCPT ); Mon, 18 Dec 2017 06:58:43 -0500 Subject: FAILED: patch "[PATCH] ext4: add missing error check in __ext4_new_inode()" failed to apply to 4.9-stable tree To: tytso@mit.edu Cc: From: Date: Mon, 18 Dec 2017 12:58:47 +0100 Message-ID: <151359832745147@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: The patch below does not apply to the 4.9-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >>From 996fc4477a0ea28226b30d175f053fb6f9a4fa36 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Sun, 10 Dec 2017 23:44:11 -0500 Subject: [PATCH] ext4: add missing error check in __ext4_new_inode() It's possible for ext4_get_acl() to return an ERR_PTR. So we need to add a check for this case in __ext4_new_inode(). Otherwise on an error we can end up oops the kernel. This was getting triggered by xfstests generic/388, which is a test which exercises the shutdown code path. Signed-off-by: Theodore Ts'o Cc: stable@vger.kernel.org diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index b4267d72f249..b32cf263750d 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -816,6 +816,8 @@ struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir, #ifdef CONFIG_EXT4_FS_POSIX_ACL struct posix_acl *p = get_acl(dir, ACL_TYPE_DEFAULT); + if (IS_ERR(p)) + return ERR_CAST(p); if (p) { int acl_size = p->a_count * sizeof(ext4_acl_entry);