From owner-svn-src-stable-12@freebsd.org Thu Mar 26 00:39:45 2020 Return-Path: Delivered-To: svn-src-stable-12@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 E1475269670; Thu, 26 Mar 2020 00:39:44 +0000 (UTC) (envelope-from np@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 48nmMz5JTwz3CXM; Thu, 26 Mar 2020 00:39:43 +0000 (UTC) (envelope-from np@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 15C5224879; Thu, 26 Mar 2020 00:39:37 +0000 (UTC) (envelope-from np@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 02Q0dak8002370; Thu, 26 Mar 2020 00:39:36 GMT (envelope-from np@FreeBSD.org) Received: (from np@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 02Q0daLw002369; Thu, 26 Mar 2020 00:39:36 GMT (envelope-from np@FreeBSD.org) Message-Id: <202003260039.02Q0daLw002369@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: np set sender to np@FreeBSD.org using -f From: Navdeep Parhar Date: Thu, 26 Mar 2020 00:39:36 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r359313 - stable/12/sys/dev/pci X-SVN-Group: stable-12 X-SVN-Commit-Author: np X-SVN-Commit-Paths: stable/12/sys/dev/pci X-SVN-Commit-Revision: 359313 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable-12@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for only the 12-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 26 Mar 2020 00:39:45 -0000 Author: np Date: Thu Mar 26 00:39:36 2020 New Revision: 359313 URL: https://svnweb.freebsd.org/changeset/base/359313 Log: MFC r359057: Remove spurious warning about invalid VPD data. The warning used to be displayed for valid VPDs about 512B or above in size. Fix the size check and add a break while here so that the routine stops if if detects any problem. Tested with "pciconf -lV" Reviewed by: kib@, jhb@ Sponsored by: Chelsio Communications Differential Revision: https://reviews.freebsd.org/D23679 Modified: stable/12/sys/dev/pci/pci.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/dev/pci/pci.c ============================================================================== --- stable/12/sys/dev/pci/pci.c Thu Mar 26 00:31:21 2020 (r359312) +++ stable/12/sys/dev/pci/pci.c Thu Mar 26 00:39:36 2020 (r359313) @@ -1105,16 +1105,16 @@ pci_read_vpd(device_t pcib, pcicfgregs *cfg) break; } remain |= byte2 << 8; - if (remain > (0x7f*4 - vrs.off)) { - state = -1; - pci_printf(cfg, - "invalid VPD data, remain %#x\n", - remain); - } name = byte & 0x7f; } else { remain = byte & 0x7; name = (byte >> 3) & 0xf; + } + if (vrs.off + remain - vrs.bytesinval > 0x8000) { + pci_printf(cfg, + "VPD data overflow, remain %#x\n", remain); + state = -1; + break; } switch (name) { case 0x2: /* String */