From owner-freebsd-stable@FreeBSD.ORG Wed Jan 15 10:33:50 2014 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 7F56B485 for ; Wed, 15 Jan 2014 10:33:50 +0000 (UTC) Received: from plane.gmane.org (plane.gmane.org [80.91.229.3]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 3A79912BF for ; Wed, 15 Jan 2014 10:33:49 +0000 (UTC) Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1W3Nn5-0000ab-61 for freebsd-stable@freebsd.org; Wed, 15 Jan 2014 11:33:43 +0100 Received: from lara.cc.fer.hr ([161.53.72.113]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 15 Jan 2014 11:33:43 +0100 Received: from ivoras by lara.cc.fer.hr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 15 Jan 2014 11:33:43 +0100 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-stable@freebsd.org From: Ivan Voras Subject: kern.ipc.maxpipekva in 10 Date: Wed, 15 Jan 2014 11:33:28 +0100 Lines: 49 Message-ID: Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="nDxRs8puTCG68fn9SxO05VKmn7UHKfc9p" X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: lara.cc.fer.hr User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 X-Enigmail-Version: 1.6 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 15 Jan 2014 10:33:50 -0000 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --nDxRs8puTCG68fn9SxO05VKmn7UHKfc9p Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hello, Since upgrading to 10.0-RC5 three days ago (from 9-STABLE), I've been greeted with the "kern.ipc.maxpipekva exceeded; see tuning(7)" message each morning. This is a desktop system and it stays on overnight. The workload is exactly the same as before. I'm guessing the most probable reason is a socket leak in an application (also from the logs: "Synergy 1.3.8: 2014-01-15T07:02:12 WARNING: cannot listen for clients: cannot bind address: Address already in use /wrkdirs/usr/ports/sysutils/synergy/work/synergy-1.3.8-Source/src/cmd/syn= ergys/synergys.cpp,520)", but I'm puzzled about two things: 1) why it didn't happen on 9.x 2) why it appears to completely disable my system. When this condition happens, the system cannot spawn new processes (probably because it has to allocate stdin/out/err) so I can't do much except reboot it ("killall" is its own binary, and so is "su"). Somehow I think this should not happen, especially since synergys runs as a nonprivileged process under my user account. It even seems like a possible DoS attack vector. Any thoughts? --nDxRs8puTCG68fn9SxO05VKmn7UHKfc9p Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (FreeBSD) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iKYEARECAGYFAlLWY/lfFIAAAAAALgAoaXNzdWVyLWZwckBub3RhdGlvbnMub3Bl bnBncC5maWZ0aGhvcnNlbWFuLm5ldDYxNDE4MkQ3ODMwNDAwMDJFRUIzNDhFNUZE MDhENTA2M0RGRjFEMkMACgkQ/QjVBj3/HSySqgCeMTeNZVQlWWmlwgyAKyyZ+tn4 p9kAn1B+FJaIfvK7XDfjcpXZVqGX6wQb =sfMg -----END PGP SIGNATURE----- --nDxRs8puTCG68fn9SxO05VKmn7UHKfc9p--