From owner-freebsd-bugs@freebsd.org Thu Sep 7 17:32:35 2017 Return-Path: Delivered-To: freebsd-bugs@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 681BDE048A6 for ; Thu, 7 Sep 2017 17:32:35 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 189DA369A for ; Thu, 7 Sep 2017 17:32:35 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id v87HWYmw091472 for ; Thu, 7 Sep 2017 17:32:34 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 222126] pf is not clearing expired states Date: Thu, 07 Sep 2017 17:32:35 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 11.1-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: noah.bergbauer@tum.de X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Sep 2017 17:32:35 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D222126 Bug ID: 222126 Summary: pf is not clearing expired states Product: Base System Version: 11.1-RELEASE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: noah.bergbauer@tum.de Ever since I updated this server from 10.3-RELEASE to 11.1-RELEASE a few we= eks ago, it sometimes just stops accepting connections (existing connections are fine). The kernel complains about too many firewall states: [zone: pf states] PF states limit reached A quick look at those states with pfctl reveals ten-thousands of old and de= ad connections that should be long gone - for example, FIN_WAIT_2 states with = an age of three hours. The pfctl output says "expires in 00:00:00" for all of these connections, so pf obviously agrees that they're dead but doesn't del= ete them for some reason. When I first diagnosed this problem, adding "set timeout interval 1" to the= pf configuration immediately cleared out the old states and the server was up = and running again. However, this did not permanently fix the issue. The server keeps going down regularly and I have to manually flush the pf states to ge= t it back online. --=20 You are receiving this mail because: You are the assignee for the bug.=