From owner-svn-src-all@freebsd.org Sat Jan 6 12:34:05 2018 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 27CBFEB7639; Sat, 6 Jan 2018 12:34:05 +0000 (UTC) (envelope-from imp@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 035086BF1E; Sat, 6 Jan 2018 12:34:05 +0000 (UTC) (envelope-from imp@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 4465A12778; Sat, 6 Jan 2018 12:34:04 +0000 (UTC) (envelope-from imp@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id w06CY4J0029143; Sat, 6 Jan 2018 12:34:04 GMT (envelope-from imp@FreeBSD.org) Received: (from imp@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id w06CY4D8029142; Sat, 6 Jan 2018 12:34:04 GMT (envelope-from imp@FreeBSD.org) Message-Id: <201801061234.w06CY4D8029142@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: imp set sender to imp@FreeBSD.org using -f From: Warner Losh Date: Sat, 6 Jan 2018 12:34:04 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r327617 - head/usr.sbin/diskinfo X-SVN-Group: head X-SVN-Commit-Author: imp X-SVN-Commit-Paths: head/usr.sbin/diskinfo X-SVN-Commit-Revision: 327617 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: 2.1.25 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: Sat, 06 Jan 2018 12:34:05 -0000 Author: imp Date: Sat Jan 6 12:34:03 2018 New Revision: 327617 URL: https://svnweb.freebsd.org/changeset/base/327617 Log: Sanity check media size and sector counts to ensure that we don't produce negative sector numbers in the testing algorithm. CID: 1198994 Modified: head/usr.sbin/diskinfo/diskinfo.c Modified: head/usr.sbin/diskinfo/diskinfo.c ============================================================================== --- head/usr.sbin/diskinfo/diskinfo.c Sat Jan 6 09:48:04 2018 (r327616) +++ head/usr.sbin/diskinfo/diskinfo.c Sat Jan 6 12:34:03 2018 (r327617) @@ -407,9 +407,14 @@ speeddisk(int fd, off_t mediasize, u_int sectorsize) int bulk, i; off_t b0, b1, sectorcount, step; + /* + * Drives smaller than 1MB produce negative sector numbers, + * as do 2048 or fewer sectors. + */ sectorcount = mediasize / sectorsize; - if (sectorcount <= 0) - return; /* Can't test devices with no sectors */ + if (mediasize < 1024 * 1024 || sectorcount < 2048) + return; + step = 1ULL << (flsll(sectorcount / (4 * 200)) - 1); if (step > 16384)