From owner-svn-src-stable@freebsd.org Tue Feb 26 14:56:02 2019 Return-Path: Delivered-To: svn-src-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id AEAED151BBF9; Tue, 26 Feb 2019 14:56:02 +0000 (UTC) (envelope-from markj@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 4D66288C5F; Tue, 26 Feb 2019 14:56:02 +0000 (UTC) (envelope-from markj@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 397796B6F; Tue, 26 Feb 2019 14:56:02 +0000 (UTC) (envelope-from markj@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x1QEu27R071626; Tue, 26 Feb 2019 14:56:02 GMT (envelope-from markj@FreeBSD.org) Received: (from markj@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x1QEu22b071625; Tue, 26 Feb 2019 14:56:02 GMT (envelope-from markj@FreeBSD.org) Message-Id: <201902261456.x1QEu22b071625@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: markj set sender to markj@FreeBSD.org using -f From: Mark Johnston Date: Tue, 26 Feb 2019 14:56:02 +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: r344581 - stable/12/sys/geom X-SVN-Group: stable-12 X-SVN-Commit-Author: markj X-SVN-Commit-Paths: stable/12/sys/geom X-SVN-Commit-Revision: 344581 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 4D66288C5F X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.98 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.998,0]; NEURAL_HAM_SHORT(-0.98)[-0.984,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_HAM_LONG(-1.00)[-0.999,0] X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 26 Feb 2019 14:56:02 -0000 Author: markj Date: Tue Feb 26 14:56:01 2019 New Revision: 344581 URL: https://svnweb.freebsd.org/changeset/base/344581 Log: MFC r344307: Limit the number of entries allocated for a REPORT_ZONES command. Modified: stable/12/sys/geom/geom_dev.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/geom/geom_dev.c ============================================================================== --- stable/12/sys/geom/geom_dev.c Tue Feb 26 13:18:14 2019 (r344580) +++ stable/12/sys/geom/geom_dev.c Tue Feb 26 14:56:01 2019 (r344581) @@ -663,8 +663,10 @@ g_dev_ioctl(struct cdev *dev, u_long cmd, caddr_t data alloc_size = 0; if (zone_args->zone_cmd == DISK_ZONE_REPORT_ZONES) { - rep = &zone_args->zone_params.report; +#define MAXENTRIES (MAXPHYS / sizeof(struct disk_zone_rep_entry)) + if (rep->entries_allocated > MAXENTRIES) + rep->entries_allocated = MAXENTRIES; alloc_size = rep->entries_allocated * sizeof(struct disk_zone_rep_entry); if (alloc_size != 0) @@ -674,15 +676,11 @@ g_dev_ioctl(struct cdev *dev, u_long cmd, caddr_t data rep->entries = new_entries; } error = g_io_zonecmd(zone_args, cp); - if ((zone_args->zone_cmd == DISK_ZONE_REPORT_ZONES) - && (alloc_size != 0) - && (error == 0)) { + if (zone_args->zone_cmd == DISK_ZONE_REPORT_ZONES && + alloc_size != 0 && error == 0) error = copyout(new_entries, old_entries, alloc_size); - } - if ((old_entries != NULL) - && (rep != NULL)) + if (old_entries != NULL && rep != NULL) rep->entries = old_entries; - if (new_entries != NULL) g_free(new_entries); break;