From owner-freebsd-net@freebsd.org Wed Feb 8 18:38:40 2017 Return-Path: Delivered-To: freebsd-net@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 80D5DCD6B4C for ; Wed, 8 Feb 2017 18:38:40 +0000 (UTC) (envelope-from markjdb@gmail.com) Received: from mail-qk0-x22c.google.com (mail-qk0-x22c.google.com [IPv6:2607:f8b0:400d:c09::22c]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 3B01114B7; Wed, 8 Feb 2017 18:38:40 +0000 (UTC) (envelope-from markjdb@gmail.com) Received: by mail-qk0-x22c.google.com with SMTP id u25so131459999qki.2; Wed, 08 Feb 2017 10:38:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=cQY5nWge16yb+c5owA18xdk1q9RV9oDNNX89zYIK5FU=; b=S1adM7tVPh9maeIDCEI2fTyxUi+mnHQgI45z/PxnwYbhvWQRoOoaedf8DgXjRKuf11 apCatk3a1czM1vnpteOg97Zvi0Cuy0Twi7QvHgMsrIkbbdqw7Qu4dxiQkdLwUtG9p0Xh RtqlQU0zyu7fWRX0+LIjyOMk/c9hYPttx13lnESN2dqPqj5ngKNUKoD+rP4sSqhYfIUP N0MMO6LGaj1jfOjngDcsHa5oI8H6Zbh1S+jSw9/U+0aCCp/p5pqZTASiutv8I6ezDarG 9EAKHhH56305EbeaO8SOwjWEFb+mIHmrKS/hw/lxSUcvpMIFz3PCzqozA2ehxtvHj6nU H2pQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to:user-agent; bh=cQY5nWge16yb+c5owA18xdk1q9RV9oDNNX89zYIK5FU=; b=bWgm+sZ9V87KJspcDkEkVcSbykKWJ5xjZWWQF+NKkGpWf8movt/2lwxoqShphbAybU scdjwYWGoFnsHDdBKZv8tJ/BhNtQb/nvxLFnphE4Y5KX58GJF2TIAxq7St+dd9pkDa80 Q0AQt/sTB9dYe8B8butmMHhrDVKv2rcLccN3lpkDYRh6mBkUgXRtbpIe4qyrbfmA9eTw zliMLwnkrs0aTXBIoAm9gjZStBlT+1tpJ/fGyWtdJl60/cOiQ0S77wdX5qNUiAgJjWjj NHb31EmfF6lGjCdKeyKMfhTOp8oNj+SxrBpg2TobIT+thVCjgfw+3qrLRLG7OltHl9XY p2+w== X-Gm-Message-State: AMke39ljSy0tPQkRpMcH5i2Ot7f9B6iM5U16JvaJ/rMVNIEacrAHJQ6u+uOtfHudgFzQQQ== X-Received: by 10.55.185.131 with SMTP id j125mr21489858qkf.115.1486579119159; Wed, 08 Feb 2017 10:38:39 -0800 (PST) Received: from wkstn-mjohnston.west.isilon.com (c-76-104-201-218.hsd1.wa.comcast.net. [76.104.201.218]) by smtp.gmail.com with ESMTPSA id h40sm6887243qtb.6.2017.02.08.10.38.38 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 08 Feb 2017 10:38:38 -0800 (PST) Sender: Mark Johnston Date: Wed, 8 Feb 2017 10:45:29 -0800 From: Mark Johnston To: Larry Rosenman Cc: Freebsd net Subject: Re: panic with dhcp assigned jumbo frames/bce interface Message-ID: <20170208184529.GB39314@wkstn-mjohnston.west.isilon.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.7.2 (2016-11-26) X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 08 Feb 2017 18:38:40 -0000 On Tue, Feb 07, 2017 at 08:46:35PM -0600, Larry Rosenman wrote: > On 02/07/2017 9:18 am, Larry Rosenman wrote: > > I attempted to set my network up with jumbo frames, and have the MTU > > set via > > DHCP option 26 (9000), and I get my bce0 device bouncing up & down > > like a yo-yo, and > > a panic with a recursed lock. > > > > I can probably get a picture of the panic, but wanted to get this out > > there. > > > > (-CURRENT, both the January snap and the February snap, AMD64.) > What documentation/etc would y'all like? I think the panic message and backtrace would be sufficient.