From owner-svn-src-all@FreeBSD.ORG Thu Jun 20 19:56:27 2013 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id 46E566C5; Thu, 20 Jun 2013 19:56:27 +0000 (UTC) (envelope-from jhb@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) by mx1.freebsd.org (Postfix) with ESMTP id 1F2BF1286; Thu, 20 Jun 2013 19:56:27 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.7/8.14.7) with ESMTP id r5KJuRe3054356; Thu, 20 Jun 2013 19:56:27 GMT (envelope-from jhb@svn.freebsd.org) Received: (from jhb@localhost) by svn.freebsd.org (8.14.7/8.14.5/Submit) id r5KJuQcI054354; Thu, 20 Jun 2013 19:56:26 GMT (envelope-from jhb@svn.freebsd.org) Message-Id: <201306201956.r5KJuQcI054354@svn.freebsd.org> From: John Baldwin Date: Thu, 20 Jun 2013 19:56:26 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r252041 - stable/9/sys/ofed/include/linux X-SVN-Group: stable-9 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 20 Jun 2013 19:56:27 -0000 Author: jhb Date: Thu Jun 20 19:56:26 2013 New Revision: 252041 URL: http://svnweb.freebsd.org/changeset/base/252041 Log: MFC 251617: Store a reference to the vnode associated with a file descriptor in the linux_file structure and use it instead of directly accessing td_fpop when destroying the linux_file structure. The td_fpop pointer is not valid when a cdevpriv destructor is run, and the type-specific close method has already been called, so f_vnode may not be valid (and the vnode might have been recycled without our own reference). Modified: stable/9/sys/ofed/include/linux/fs.h stable/9/sys/ofed/include/linux/linux_compat.c Directory Properties: stable/9/sys/ (props changed) Modified: stable/9/sys/ofed/include/linux/fs.h ============================================================================== --- stable/9/sys/ofed/include/linux/fs.h Thu Jun 20 19:08:12 2013 (r252040) +++ stable/9/sys/ofed/include/linux/fs.h Thu Jun 20 19:56:26 2013 (r252041) @@ -73,6 +73,7 @@ struct linux_file { struct dentry f_dentry_store; struct selinfo f_selinfo; struct sigio *f_sigio; + struct vnode *f_vnode; }; #define file linux_file Modified: stable/9/sys/ofed/include/linux/linux_compat.c ============================================================================== --- stable/9/sys/ofed/include/linux/linux_compat.c Thu Jun 20 19:08:12 2013 (r252040) +++ stable/9/sys/ofed/include/linux/linux_compat.c Thu Jun 20 19:56:26 2013 (r252041) @@ -211,7 +211,8 @@ linux_file_dtor(void *cdp) struct linux_file *filp; filp = cdp; - filp->f_op->release(curthread->td_fpop->f_vnode, filp); + filp->f_op->release(filp->f_vnode, filp); + vdrop(filp->f_vnode); kfree(filp); } @@ -231,6 +232,8 @@ linux_dev_open(struct cdev *dev, int ofl filp->f_dentry = &filp->f_dentry_store; filp->f_op = ldev->ops; filp->f_flags = file->f_flag; + vhold(file->f_vnode); + filp->f_vnode = file->f_vnode; if (filp->f_op->open) { error = -filp->f_op->open(file->f_vnode, filp); if (error) {