From owner-svn-src-all@freebsd.org Tue Oct 1 23:28:22 2019 Return-Path: Delivered-To: svn-src-all@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id C17A9FB07C; Tue, 1 Oct 2019 23:28:22 +0000 (UTC) (envelope-from mckusick@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 46jb6t4XN1z4XGx; Tue, 1 Oct 2019 23:28:22 +0000 (UTC) (envelope-from mckusick@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 7F49522B75; Tue, 1 Oct 2019 23:28:22 +0000 (UTC) (envelope-from mckusick@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x91NSMt1048173; Tue, 1 Oct 2019 23:28:22 GMT (envelope-from mckusick@FreeBSD.org) Received: (from mckusick@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x91NSM2M048172; Tue, 1 Oct 2019 23:28:22 GMT (envelope-from mckusick@FreeBSD.org) Message-Id: <201910012328.x91NSM2M048172@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: mckusick set sender to mckusick@FreeBSD.org using -f From: Kirk McKusick Date: Tue, 1 Oct 2019 23:28:22 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r352947 - stable/11/sys/kern X-SVN-Group: stable-11 X-SVN-Commit-Author: mckusick X-SVN-Commit-Paths: stable/11/sys/kern X-SVN-Commit-Revision: 352947 X-SVN-Commit-Repository: base 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: 2.1.29 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: Tue, 01 Oct 2019 23:28:22 -0000 Author: mckusick Date: Tue Oct 1 23:28:22 2019 New Revision: 352947 URL: https://svnweb.freebsd.org/changeset/base/352947 Log: MFC of 352453 Check bread_gb() return value in cluster_collectbufs() code. Modified: stable/11/sys/kern/vfs_cluster.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/kern/vfs_cluster.c ============================================================================== --- stable/11/sys/kern/vfs_cluster.c Tue Oct 1 23:26:52 2019 (r352946) +++ stable/11/sys/kern/vfs_cluster.c Tue Oct 1 23:28:22 2019 (r352947) @@ -702,6 +702,14 @@ cluster_write(struct vnode *vp, struct buf *bp, u_quad struct cluster_save *buflist; buflist = cluster_collectbufs(vp, bp, gbflags); + if (buflist == NULL) { + /* + * Cluster build failed so just write + * it now. + */ + bawrite(bp); + return; + } endbp = &buflist->bs_children [buflist->bs_nchildren - 1]; if (VOP_REALLOCBLKS(vp, buflist)) { @@ -1054,7 +1062,7 @@ cluster_collectbufs(struct vnode *vp, struct buf *last struct cluster_save *buflist; struct buf *bp; daddr_t lbn; - int i, len; + int i, j, len, error; len = vp->v_lastw - vp->v_cstart + 1; buflist = malloc(sizeof(struct buf *) * (len + 1) + sizeof(*buflist), @@ -1062,8 +1070,18 @@ cluster_collectbufs(struct vnode *vp, struct buf *last buflist->bs_nchildren = 0; buflist->bs_children = (struct buf **) (buflist + 1); for (lbn = vp->v_cstart, i = 0; i < len; lbn++, i++) { - (void)bread_gb(vp, lbn, last_bp->b_bcount, NOCRED, + error = bread_gb(vp, lbn, last_bp->b_bcount, NOCRED, gbflags, &bp); + if (error != 0) { + /* + * If read fails, release collected buffers + * and return failure. + */ + for (j = 0; j < i; j++) + brelse(buflist->bs_children[j]); + free(buflist, M_SEGMENT); + return (NULL); + } buflist->bs_children[i] = bp; if (bp->b_blkno == bp->b_lblkno) VOP_BMAP(vp, bp->b_lblkno, NULL, &bp->b_blkno,