Date: Mon, 14 May 2007 09:57:13 +0200 From: Stefan Bethke <stb@lassitu.de> To: Kris Kennaway <kris@obsecurity.org> Cc: Attilio Rao <attilio@freebsd.org>, FreeBSD Current <freebsd-current@freebsd.org>, Andre Oppermann <andre@freebsd.org> Subject: Re: panic: mutex tcp owned at /usr/src/sys/netinet/tcp_input.c:2475 Message-ID: <C8F48051-6C5A-4BAC-B226-EF1F02F9F051@lassitu.de> In-Reply-To: <20070513232413.GA65863@xor.obsecurity.org> References: <97D4D7C1-8FE4-48C1-9604-A567420796D5@lassitu.de> <4644D331.9080901@freebsd.org> <5729FCC6-7CD5-4D26-B075-9D517B9A06D5@lassitu.de> <3bbf2fe10705131245y276af14as53f3839e62024473@mail.gmail.com> <355DA9CE-F097-46EA-8D37-BA4C27019246@lassitu.de> <20070513222114.GA64807@xor.obsecurity.org> <68AA0B73-75E0-4E20-8AE0-74FB2FB654ED@lassitu.de> <20070513232413.GA65863@xor.obsecurity.org>
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Am 14.05.2007 um 01:24 schrieb Kris Kennaway: > On Mon, May 14, 2007 at 12:55:40AM +0200, Stefan Bethke wrote: >> >> Am 14.05.2007 um 00:21 schrieb Kris Kennaway: >> >>> On Mon, May 14, 2007 at 12:17:28AM +0200, Stefan Bethke wrote: >>>> >>>> Am 13.05.2007 um 21:45 schrieb Attilio Rao: >>>> >>>>> 2007/5/11, Stefan Bethke <stb@lassitu.de>: >>>>>> >>>>>> Am 11.05.2007 um 22:33 schrieb Andre Oppermann: >>>>>> >>>>>>> Stefan Bethke wrote: >>>>>>>> Got this reproducable panic on AMD64 on a couple of days old - >>>>>>>> current when I try to copy a file off a ZFS dataset via >>>>>>>> netatalk's afpd (via TCP, no actual AppleTalk involved). >>>>>>> >>>>>>> This is a recursive leak of the INP_INFO_LOCK() you've hit here. >>>>>>> We don't >>>>>>> know yet where it gets leaked but we're working on it. >>>>>> >>>>>> Hhm. I can trigger it very easily. I don't have a serial >>>>>> console on >>>>>> this box, but I could try a few things in a debugger if anyone >>>>>> wants >>>>>> me to look at anything in particular. >>>>> >>>>> Hello Stefan, >>>>> can you please recompile your kernel with INVARIANTS, DDB and KTR >>>>> support? >>>>> >>>>> Just add those lines: >>>>> options INVARIANTS >>>>> options INVARIANT_SUPPORT >>>>> options KDB >>>>> options DDB >>>>> options KTR >>>>> options KTR_COMPILE=(KTR_LOCK) >>>>> options KTR_ENTRIES=65534 >>>>> >>>>> and possibly remove kbdmux from your config file (not sure if >>>>> it has >>>>> still problems with our syscons, though). >>>>> >>>>> Then, when you hit that panic you should just be redirected to >>>>> ddb. >>>>> At that point please write 'show ktr' in the ddb prompt and report >>>>> what it shows. >>>> >>>> Left kbdmux in for the moment. Hit the panic, and show ktr shows >>>> nothings: >>>> >>>> db> show ktr >>>> --- End of trace buffer --- >>>> db> >>>> >>>> If you think it's useful, I can remove kdbmux as well and try >>>> again. >>> >>> You also need KTR_MASK=(KTR_LOCK) (or set debug.ktr.mask at >>> runtime), >>> this filters the events that are logged. >> >> Nothing still. > > OK, KTR_ENTRIES is also wrong as suggested by attilio, it must be a > power of 2. Try 32768 or 65536 (the latter may be too large depending > on your architecture). OK, got it. However, it's a bit more than I'm willing to hand- transcribe :-) Any way of saving this info without a serial console or a digital camera? I'll try to get a serial port the next couple of days... Stefan -- Stefan Bethke <stb@lassitu.de> Fon +49 170 346 0140
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