From owner-freebsd-bugs@FreeBSD.ORG Wed May 14 13:50:01 2014 Return-Path: Delivered-To: freebsd-bugs@smarthost.ysv.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 8BB93A6E for ; Wed, 14 May 2014 13:50:01 +0000 (UTC) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:1900:2254:206c::16:87]) (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 5A747214A for ; Wed, 14 May 2014 13:50:01 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.8/8.14.8) with ESMTP id s4EDo0kF076662 for ; Wed, 14 May 2014 13:50:00 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.8/8.14.8/Submit) id s4EDo0bl076661; Wed, 14 May 2014 13:50:00 GMT (envelope-from gnats) Resent-Date: Wed, 14 May 2014 13:50:00 GMT Resent-Message-Id: <201405141350.s4EDo0bl076661@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Anton Shterenlikht 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 789754FF for ; Wed, 14 May 2014 13:42:56 +0000 (UTC) Received: from eu1sys200aog101.obsmtp.com (eu1sys200aog101.obsmtp.com [207.126.144.111]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id C655620E0 for ; Wed, 14 May 2014 13:42:55 +0000 (UTC) Received: from mail-wi0-f174.google.com ([209.85.212.174]) (using TLSv1) by eu1sys200aob101.postini.com ([207.126.147.11]) with SMTP ID DSNKU3Ny2EKxB7Amqj5u+kaFN3TuHi58L3bH@postini.com; Wed, 14 May 2014 13:42:55 UTC Received: by mail-wi0-f174.google.com with SMTP id r20so8051510wiv.1 for ; Wed, 14 May 2014 06:42:48 -0700 (PDT) Received: from mech-cluster241.men.bris.ac.uk (mech-cluster241.men.bris.ac.uk. [137.222.187.241]) by mx.google.com with ESMTPSA id z14sm361288wiu.6.2014.05.14.06.37.41 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 14 May 2014 06:37:42 -0700 (PDT) Received: from mech-cluster241.men.bris.ac.uk (localhost [127.0.0.1]) by mech-cluster241.men.bris.ac.uk (8.14.8/8.14.8) with ESMTP id s4EDbe1u021106 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Wed, 14 May 2014 14:37:40 +0100 (BST) (envelope-from mexas@mech-cluster241.men.bris.ac.uk) Received: (from mexas@localhost) by mech-cluster241.men.bris.ac.uk (8.14.8/8.14.8/Submit) id s4EDbehe021105; Wed, 14 May 2014 14:37:40 +0100 (BST) (envelope-from mexas) Message-Id: <201405141337.s4EDbehe021105@mech-cluster241.men.bris.ac.uk> Date: Wed, 14 May 2014 14:37:40 +0100 (BST) From: Anton Shterenlikht Sender: Anton Shterenlikht Reply-To: Anton Shterenlikht To: FreeBSD-gnats-submit@freebsd.org X-Send-Pr-Version: 3.114 Subject: kern/189802: amd64 current 264294 panic: breakpoint instruction fault, possibly iwn bug X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 14 May 2014 13:50:01 -0000 >Number: 189802 >Category: kern >Synopsis: amd64 current 264294 panic: breakpoint instruction fault, possibly iwn bug >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed May 14 13:50:00 UTC 2014 >Closed-Date: >Last-Modified: >Originator: Anton Shterenlikht >Release: FreeBSD 11.0-CURRENT ia64 >Organization: >Environment: System: FreeBSD 11.0-CURRENT #11 r264294: Wed Apr 9 13:38:12 BST 2014 root@mech-aslap33.men.bris.ac.uk:/usr/obj/usr/src/sys/MINKY amd64 >Description: I'm seeing spontaneous reboots on an amd64 laptop with iwn card. I haven't enabled a dump partition yet (will try to do), so all I get is: Fatal trap 3: breakpoint instruction fault while in kernel mode cpuid = 0; apic id = 00 instruction pointer = 0x20:0xffffffff805b173e stack pointer = 0x28:0xffffffff81018590 frame pointer = 0x28:0xffffffff810185b0 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = IOPL = 0 current process = 12 (irq259: iwn0) trap number = 3 panic: breakpoint instruction fault cpuid = 0 KDB: enter: panic iwn behaves really badly, and disconnects every few minutes with: wlan0: Ethernet address: 00:21:5c:50:68:c3 wlan0: link state changed to UP iwn0: iwn_intr: fatal firmware error firmware error log: error type = "FH_ERROR" (0x0000000C) program counter = 0x0000046C source line = 0x000000D0 error data = 0x0000000802730000 branch link = 0x0000A332000004C2 interrupt link = 0x000006DE0000A37E time = 2607530651 driver status: tx ring 0: qid=0 cur=22 queued=12 tx ring 1: qid=1 cur=0 queued=0 tx ring 2: qid=2 cur=0 queued=0 tx ring 3: qid=3 cur=16 queued=0 tx ring 4: qid=4 cur=81 queued=0 tx ring 5: qid=5 cur=0 queued=0 tx ring 6: qid=6 cur=0 queued=0 tx ring 7: qid=7 cur=0 queued=0 tx ring 8: qid=8 cur=0 queued=0 tx ring 9: qid=9 cur=0 queued=0 tx ring 10: qid=10 cur=0 queued=0 tx ring 11: qid=11 cur=0 queued=0 tx ring 12: qid=12 cur=0 queued=0 tx ring 13: qid=13 cur=0 queued=0 tx ring 14: qid=14 cur=0 queued=0 tx ring 15: qid=15 cur=0 queued=0 rx ring: cur=39 ifa_del_loopback_route: deletion failed: 3 wlan0: link state changed to DOWN wlan0: Ethernet address: 00:21:5c:50:68:c3 wlan0: link state changed to UP This is a known problem: http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/176104 It is interesting to note that iwn disconnects a lot at work, and very rarely at home. I suspect that it is too sensitive to interference, or something like this. Anyway, I'll try to provide textdump if I set it up. >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted: