From owner-freebsd-bugs@FreeBSD.ORG Tue Apr 20 04:30:06 2010 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 1FF4E1065675 for ; Tue, 20 Apr 2010 04:30:06 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id F0E8D8FC37 for ; Tue, 20 Apr 2010 04:30:05 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.4/8.14.4) with ESMTP id o3K4U5nc049891 for ; Tue, 20 Apr 2010 04:30:05 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.4/8.14.4/Submit) id o3K4U55K049890; Tue, 20 Apr 2010 04:30:05 GMT (envelope-from gnats) Resent-Date: Tue, 20 Apr 2010 04:30:05 GMT Resent-Message-Id: <201004200430.o3K4U55K049890@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, Alexey Illarionov Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6B09C106564A for ; Tue, 20 Apr 2010 04:26:29 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (www.freebsd.org [IPv6:2001:4f8:fff6::21]) by mx1.freebsd.org (Postfix) with ESMTP id 5A3628FC14 for ; Tue, 20 Apr 2010 04:26:29 +0000 (UTC) Received: from www.freebsd.org (localhost [127.0.0.1]) by www.freebsd.org (8.14.3/8.14.3) with ESMTP id o3K4QStC021808 for ; Tue, 20 Apr 2010 04:26:28 GMT (envelope-from nobody@www.freebsd.org) Received: (from nobody@localhost) by www.freebsd.org (8.14.3/8.14.3/Submit) id o3K4QSpt021807; Tue, 20 Apr 2010 04:26:28 GMT (envelope-from nobody) Message-Id: <201004200426.o3K4QSpt021807@www.freebsd.org> Date: Tue, 20 Apr 2010 04:26:28 GMT From: Alexey Illarionov To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-3.1 Cc: Subject: kern/145865: kernel memory leak with disabled devd and hw.bus.devctl_disable=1 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 20 Apr 2010 04:30:06 -0000 >Number: 145865 >Category: kern >Synopsis: kernel memory leak with disabled devd and hw.bus.devctl_disable=1 >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: Tue Apr 20 04:30:05 UTC 2010 >Closed-Date: >Last-Modified: >Originator: Alexey Illarionov >Release: 7.3-STABLE >Organization: >Environment: 7.3-STABLE FreeBSD 7.3-STABLE #1: Mon Apr 19 05:25:53 MSD 2010 i386 >Description: The 7.3-STABLE kernel leaks memory when devd is disabled even when hw.bus.devctl_disable=1. The same problem exists on recent 8 stable with hw.bus.devctl_queue=0 and hw.bus.devctl_disable=1 I have mpd5 server with about 400 online users. After about month of uptime there was a kernel panic: panic: kmem_malloc(16384): kmem_map too small: 335544320 total allocated vmstat points to high bus memory usage: bus 4891890 191093K - 4907302 16,32,64,128,1024 >How-To-Repeat: 1. Turn off devd: # /etc/rc.d/devd stop # sysctl hw.bus.devctl_disable=1 2. Create some kernel events and watch for memory: # vmstat -m | awk '$1=="bus"{print $1,$2,$3}' bus 1053 50K # for i in `jot - 1 50` ; do ifconfig gre$i create ; ifconfig gre$i destroy ; done # vmstat -m | awk '$1=="bus"{print $1,$2,$3}' bus 1153 57K # for i in `jot - 1 50` ; do ifconfig gre$i create ; ifconfig gre$i destroy ; done # vmstat -m | awk '$1=="bus"{print $1,$2,$3}' bus 1254 63K >Fix: >Release-Note: >Audit-Trail: >Unformatted: