From owner-freebsd-bugs@FreeBSD.ORG Mon Jan 10 23:30:30 2005 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4E4B416A4CE for ; Mon, 10 Jan 2005 23:30:30 +0000 (GMT) Received: from freefall.freebsd.org (freefall.freebsd.org [216.136.204.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id 17B1143D39 for ; Mon, 10 Jan 2005 23:30:30 +0000 (GMT) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.13.1/8.13.1) with ESMTP id j0ANUTKA090472 for ; Mon, 10 Jan 2005 23:30:29 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.13.1/8.13.1/Submit) id j0ANUT5b090471; Mon, 10 Jan 2005 23:30:29 GMT (envelope-from gnats) Resent-Date: Mon, 10 Jan 2005 23:30:29 GMT Resent-Message-Id: <200501102330.j0ANUT5b090471@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Dmitrij Tejblum Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 0FB9216A4CE for ; Mon, 10 Jan 2005 23:28:06 +0000 (GMT) Received: from developer.yandex.ru (developer.yandex.ru [213.180.193.15]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4CA9C43D2F for ; Mon, 10 Jan 2005 23:28:05 +0000 (GMT) (envelope-from tejblum@developer.yandex.ru) Received: from developer.yandex.ru (localhost [127.0.0.1]) by developer.yandex.ru (8.13.1/8.13.1) with ESMTP id j0ANS3cr051522 for ; Tue, 11 Jan 2005 02:28:04 +0300 (MSK) (envelope-from tejblum@developer.yandex.ru) Received: (from tejblum@localhost) by developer.yandex.ru (8.13.1/8.13.1/Submit) id j0ANS3Va051521; Tue, 11 Jan 2005 02:28:03 +0300 (MSK) (envelope-from tejblum) Message-Id: <200501102328.j0ANS3Va051521@developer.yandex.ru> Date: Tue, 11 Jan 2005 02:28:03 +0300 (MSK) From: Dmitrij Tejblum To: FreeBSD-gnats-submit@FreeBSD.org X-Send-Pr-Version: 3.113 Subject: bin/76075: arp program failures due to ARP table growth X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: Dmitrij Tejblum List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 10 Jan 2005 23:30:30 -0000 >Number: 76075 >Category: bin >Synopsis: arp program failures due to ARP table growth >Confidential: no >Severity: non-critical >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Jan 10 23:30:27 GMT 2005 >Closed-Date: >Last-Modified: >Originator: Dmitrij Tejblum >Release: FreeBSD 5.3-STABLE i386 >Organization: >Environment: >Description: The arp -an command sometimes fail with arp: actual retrieval of routing table: Cannot allocate memory if ARP tables has been grown after its size was estimated. >How-To-Repeat: >Fix: Allocate a bit more memory for ARP table, so the event will be less likely. --- arp.c Tue Jan 11 02:00:45 2005 +++ arp.c Tue Jan 11 02:05:15 2005 @@ -471,10 +471,11 @@ mib[5] = RTF_LLINFO; if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) err(1, "route-sysctl-estimate"); if (needed == 0) /* empty table */ return 0; + needed += needed / 2; if ((buf = malloc(needed)) == NULL) err(1, "malloc"); if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) err(1, "actual retrieval of routing table"); lim = buf + needed; >Release-Note: >Audit-Trail: >Unformatted: