Date: Sun, 12 Oct 2008 11:40:36 +0100 (BST) From: Robert Watson <rwatson@FreeBSD.org> To: Vlad GALU <dudu@dudu.ro> Cc: Jeremy Chadwick <koitsu@FreeBSD.org>, freebsd-stable@freebsd.org Subject: Re: UDP LOR with the latest RELENG_7 Message-ID: <alpine.BSF.1.10.0810121138550.75020@fledge.watson.org> In-Reply-To: <alpine.BSF.1.10.0810102218370.70991@fledge.watson.org> References: <ad79ad6b0810100540w7a84d70ajd60cb575149914ef@mail.gmail.com> <200810101458.m9AEw2KI082581@lava.sentex.ca> <ad79ad6b0810100811x2a871854ve326f54fc3e0a680@mail.gmail.com> <20081010152116.GA35404@icarus.home.lan> <ad79ad6b0810100824i6a8203e2gc2293b0abc4ef756@mail.gmail.com> <20081010154404.GA36021@icarus.home.lan> <alpine.BSF.1.10.0810102218370.70991@fledge.watson.org>
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On Fri, 10 Oct 2008, Robert Watson wrote: > On Fri, 10 Oct 2008, Jeremy Chadwick wrote: > >>> I'll see whether the system still locks up or not though.. >> >> Okay, I'm bringing rwatson@ into the thread since this is specific to UDP. > > I've now fixed the bug leading to the lock order reversal; I'd be interested > in knowing if it also corrects the stability issue. This was r183753 in > svn; I'm not sure it's hit CVS/cvsup yet but should do in a few minutes. Dear Vlad: Could you confirm that with udp_usrreq.c:1.218.2.7 (or newer), the problem has gone away? CVS log excerpt below. Thanks, Robert N M Watson Computer Laboratory University of Cambridge revision 1.218.2.7 date: 2008/10/10 21:18:12; author: rwatson; state: Exp; lines: +8 -8 SVN rev 183753 on 2008-10-10 21:18:12Z by rwatson Test the soreceive_dgram tunable and set up the pr_usrreqs structure during UDP initialization, not during UDP inpcb initialization. Reported by: Vlad GALU <dudu at dudu dot ro> Approved by: re (kib)
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