From owner-freebsd-bugs@FreeBSD.ORG Thu Oct 4 05:30:08 2007 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 7429716A418 for ; Thu, 4 Oct 2007 05:30:08 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 48D3B13C44B for ; Thu, 4 Oct 2007 05:30:08 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.14.1/8.14.1) with ESMTP id l945U8gf017684 for ; Thu, 4 Oct 2007 05:30:08 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.1/8.14.1/Submit) id l945U8jg017675; Thu, 4 Oct 2007 05:30:08 GMT (envelope-from gnats) Date: Thu, 4 Oct 2007 05:30:08 GMT Message-Id: <200710040530.l945U8jg017675@freefall.freebsd.org> To: freebsd-bugs@FreeBSD.org From: John Merryweather Cooper Cc: Subject: Re: kern/116887: Lock Order Reversal with kbd and zyd X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: John Merryweather Cooper List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 04 Oct 2007 05:30:08 -0000 The following reply was made to PR kern/116887; it has been noted by GNATS. From: John Merryweather Cooper To: FreeBSD gnats submit Cc: Subject: Re: kern/116887: Lock Order Reversal with kbd and zyd Date: Wed, 03 Oct 2007 22:28:09 -0700 "John Merryweather Cooper" > Number: 116887 >> Category: kern >> Synopsis: Lock Order Reversal with kbd and zyd >> Confidential: no >> Severity: non-critical >> Priority: low >> Responsible: freebsd-bugs >> State: open >> Quarter: >> Keywords: >> Date-Required: >> Class: sw-bug >> Submitter-Id: current-users >> Arrival-Date: Thu Oct 04 05:20:04 GMT 2007 >> Closed-Date: >> Last-Modified: >> Originator: John Merryweather Cooper >> Release: FreeBSD 7.0-CURRENT amd64 >> Organization: >> Environment: >> > > > System: FreeBSD 7.0-CURRENT #8: Mon Oct 1 12:32:21 PDT 2007 > root@borgdemon3.temp.wsu.edu:/usr/obj/usr/src/sys/TURION > > > > >> Description: >> > > > Usually, when the zyd0 interface accepts a DHCP IP or roams, I get the attached lock order reversal. Rarely, this is accompanied by a system freeze. > > > >> How-To-Repeat: >> > > > plugin my Belkin dongle > > > >> Fix: >> > > > unknown > > --- lock-order-reversal begins here --- > Oct 3 19:27:26 borgdemon3 kernel: lock order reversal: (Giant after non-sleepable) > Oct 3 19:27:26 borgdemon3 kernel: 1st 0xffffff0001674cf0 inp (udpinp) @ /usr/src/sys/netinet/in_mcast.c:670 > Oct 3 19:27:26 borgdemon3 kernel: 2nd 0xffffffff8078e3c0 Giant (Giant) @ /usr/src/sys/netinet/in_mcast.c:317 > Oct 3 19:27:26 borgdemon3 kernel: KDB: stack backtrace: > Oct 3 19:27:26 borgdemon3 kernel: db_trace_self_wrapper() at db_trace_self_wrapper+0x2a > Oct 3 19:27:26 borgdemon3 kernel: witness_checkorder() at witness_checkorder+0x64b > Oct 3 19:27:26 borgdemon3 kernel: _mtx_lock_flags() at _mtx_lock_flags+0x75 > Oct 3 19:27:26 borgdemon3 kernel: in_addmulti() at in_addmulti+0x1e3 > Oct 3 19:27:26 borgdemon3 kernel: inp_setmoptions() at inp_setmoptions+0x111c > Oct 3 19:27:26 borgdemon3 kernel: ip_ctloutput() at ip_ctloutput+0x16f > Oct 3 19:27:26 borgdemon3 kernel: sosetopt() at sosetopt+0x3b > Oct 3 19:27:26 borgdemon3 kernel: kern_setsockopt() at kern_setsockopt+0xa2 > Oct 3 19:27:26 borgdemon3 kernel: setsockopt() at setsockopt+0x22 > Oct 3 19:27:26 borgdemon3 kernel: syscall() at syscall+0x1ca > Oct 3 19:27:26 borgdemon3 kernel: Xfast_syscall() at > Oct 3 19:27:26 borgdemon3 kernel: Xfast_syscall+0xab > Oct 3 19:27:26 borgdemon3 kernel: --- syscall (105, FreeBSD ELF64, setsockopt), rip = 0x800eb8ebc, rsp = 0x7fffffffeb18, rbp = 0x7fffffffeb90 --- > > --- lock-order-reversal ends here --- > > > > >> Release-Note: >> Audit-Trail: >> Unformatted: >> > _______________________________________________ > freebsd-bugs@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-bugs > To unsubscribe, send any mail to "freebsd-bugs-unsubscribe@freebsd.org" > > This is a duplicate of kern/116886 (my usual mail relay is wacking out on me). jmc