From owner-freebsd-current@FreeBSD.ORG Sun Nov 13 06:33:26 2011 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id BEBC5106564A; Sun, 13 Nov 2011 06:33:26 +0000 (UTC) (envelope-from cvs-src@yandex.ru) Received: from forward7.mail.yandex.net (forward7.mail.yandex.net [IPv6:2a02:6b8:0:202::2]) by mx1.freebsd.org (Postfix) with ESMTP id 3ED258FC14; Sun, 13 Nov 2011 06:33:26 +0000 (UTC) Received: from smtp8.mail.yandex.net (smtp8.mail.yandex.net [77.88.61.54]) by forward7.mail.yandex.net (Yandex) with ESMTP id 9B9241C454D; Sun, 13 Nov 2011 10:33:24 +0400 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex.ru; s=mail; t=1321166004; bh=90dfNniLgaAdkKZdV2cu0/R2Lt051ySvjgIn66ZMdWY=; h=Message-ID:Date:From:MIME-Version:To:CC:Subject:Content-Type: Content-Transfer-Encoding; b=P5/qh4/uGglFJ7uLrZtByzSvf9Ikg0baH5vBgKSqgRH19kdnMRQhTUjM3SASH9fsL gGq/y/PYhHZ7enxr2VcpFZA1oGGJfEhxcSV621zqbzJ5nOUfmiZO8GzAtkYmy+DEVn ptScHPlGvJXjmSbHP/APEaisN9X+EVQuLgWVfG6U= Received: from smtp8.mail.yandex.net (localhost [127.0.0.1]) by smtp8.mail.yandex.net (Yandex) with ESMTP id 776DA1B603E0; Sun, 13 Nov 2011 10:33:24 +0400 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex.ru; s=mail; t=1321166004; bh=90dfNniLgaAdkKZdV2cu0/R2Lt051ySvjgIn66ZMdWY=; h=Message-ID:Date:From:MIME-Version:To:CC:Subject:Content-Type: Content-Transfer-Encoding; b=P5/qh4/uGglFJ7uLrZtByzSvf9Ikg0baH5vBgKSqgRH19kdnMRQhTUjM3SASH9fsL gGq/y/PYhHZ7enxr2VcpFZA1oGGJfEhxcSV621zqbzJ5nOUfmiZO8GzAtkYmy+DEVn ptScHPlGvJXjmSbHP/APEaisN9X+EVQuLgWVfG6U= Received: from unknown (unknown [213.138.88.133]) by smtp8.mail.yandex.net (nwsmtp/Yandex) with ESMTP id XMO80ffR-XOOWGmoQ; Sun, 13 Nov 2011 10:33:24 +0400 X-Yandex-Spam: 1 Message-ID: <4EBF64A3.2090909@yandex.ru> Date: Sun, 13 Nov 2011 10:33:07 +0400 From: Ruslan Mahmatkhanov User-Agent: Mozilla/5.0 (X11; FreeBSD i386; rv:8.0) Gecko/20111109 Thunderbird/8.0 MIME-Version: 1.0 To: freebsd-current@freebsd.org X-Enigmail-Version: undefined Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Mailman-Approved-At: Sun, 13 Nov 2011 11:49:03 +0000 Cc: Adrian Chadd Subject: Problem with kernel memory dump after panic X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 13 Nov 2011 06:33:26 -0000 Hi! I'm getting if_bwn panics with high traffic on -CURRENT: http://lists.freebsd.org/pipermail/freebsd-mobile/2011-November/012481.html And now i realize that it probably may be also reproduced on earlier FreeBSD versions, because i didn't do such high-trafficking before, so i got an illusion that this is -CURRENT-specific problem - it's an assumption nevertheless. I'm tried to investigate the causes (well, actually Adrian (adrian) tried :)), and i got some problem when i try to show backtrace to him: smeshariki3# kgdb -q -c /var/crash/vmcore.1 /boot/kernel/kernel (no debugging symbols found)...#0 0xc06f6aad in doadump () (kgdb) bt #0 0xc06f6aad in doadump () #1 0xc0af42e0 in show_busybufs () #2 0xefd25620 in ?? () #3 0xc06f7012 in kern_reboot () Previous frame inner to this frame (corrupt stack?) (kgdb) I have all the debugging disabled in my kernel, but Adrian claims that it still should carry some valuable data in backtrace, that is missed now, and he suggested me to ask freebsd-current@ about this. So I'm here. "Where is my backtrace, dude?" (C) PS. I have system sources, my kernel is in sync with world and third-party modules. -- Regards, Ruslan Tinderboxing kills... the drives.