Date: Thu, 4 Oct 2007 05:30:08 GMT From: John Merryweather Cooper <john_m_cooper@yahoo.com> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/116887: Lock Order Reversal with kbd and zyd Message-ID: <200710040530.l945U8jg017675@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
The following reply was made to PR kern/116887; it has been noted by GNATS. From: John Merryweather Cooper <john_m_cooper@yahoo.com> To: FreeBSD gnats submit <FreeBSD-gnats-submit@FreeBSD.org> Cc: Subject: Re: kern/116887: Lock Order Reversal with kbd and zyd Date: Wed, 03 Oct 2007 22:28:09 -0700 "John Merryweather Cooper" <John Merryweather Cooper wrote: >> 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
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200710040530.l945U8jg017675>