From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 69CCCC43331 for ; Mon, 11 Nov 2019 18:41:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3F30C214E0 for ; Mon, 11 Nov 2019 18:41:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573497711; bh=kXDCd+YkH9auL3wVKYv7uJB8ePTT5Ml+UvFqM1a1QKY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=fymXWiMWBF6Y7uCg+LlkzAI3Gw6B4Wo9CJuI0jUEWA/P1LyK35WqgOgBmblk2HfLv Z+tGpEBX8It1yse0Jvt2ddpkf2EobJM2b6y7q7kf8FHsHXfL4joXi5j9d4nDfNjv5u JRNlRQlmFFSgablJHVIf4rDJuI0iEcZo5voy+Uak= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729442AbfKKSlt (ORCPT ); Mon, 11 Nov 2019 13:41:49 -0500 Received: from mail.kernel.org ([198.145.29.99]:32886 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729418AbfKKSlr (ORCPT ); Mon, 11 Nov 2019 13:41:47 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2CCF82067B; Mon, 11 Nov 2019 18:41:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573497706; bh=kXDCd+YkH9auL3wVKYv7uJB8ePTT5Ml+UvFqM1a1QKY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eMhV0cUFQzT4tfZ/NjNLZ/T+FMa6TUjlm2BxLK4p5pdRvXIYOj2igINJLj+SVY//a 6B1pivzgRYD9ExLewpQj9h2Sjav9VllbWCc8UES17OM4DqzekKxYkvUAu32TtyM5lW 72dHcssJYMTXYVQ0BRXMDV9TprPHKiZRKkzJSl54= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Al Viro , Jeff Layton , Ilya Dryomov Subject: [PATCH 4.19 032/125] ceph: add missing check in d_revalidate snapdir handling Date: Mon, 11 Nov 2019 19:27:51 +0100 Message-Id: <20191111181444.999742255@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191111181438.945353076@linuxfoundation.org> References: <20191111181438.945353076@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Al Viro commit 1f08529c84cfecaf1261ed9b7e17fab18541c58f upstream. We should not play with dcache without parent locked... Cc: stable@vger.kernel.org Signed-off-by: Al Viro Signed-off-by: Jeff Layton Signed-off-by: Ilya Dryomov Signed-off-by: Greg Kroah-Hartman --- fs/ceph/inode.c | 1 + 1 file changed, 1 insertion(+) --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -1399,6 +1399,7 @@ retry_lookup: dout(" final dn %p\n", dn); } else if ((req->r_op == CEPH_MDS_OP_LOOKUPSNAP || req->r_op == CEPH_MDS_OP_MKSNAP) && + test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) && !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) { struct dentry *dn = req->r_dentry; struct inode *dir = req->r_parent;