Date: Wed, 5 Jun 2013 09:47:55 -0700 From: Justin Hibbits <jhibbits@freebsd.org> To: Nathan Whitehorn <nwhitehorn@freebsd.org> Cc: FreeBSD PowerPC ML <freebsd-ppc@freebsd.org> Subject: Re: Strange panic on ppc64 Message-ID: <CAHSQbTBjza0u7nZf4z%2BxpTCcWj-TW-ZigV2-CZexuBOYQX5=3A@mail.gmail.com> In-Reply-To: <51AF6661.3060007@freebsd.org> References: <CAHSQbTAZTc9puGaH0rbhyY11s0%2BL0xGjSabK1kj65UMm1t7j3w@mail.gmail.com> <51AF6661.3060007@freebsd.org>
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Will do, when I get it panicking again. - Justin On Jun 5, 2013 9:46 AM, "Nathan Whitehorn" <nwhitehorn@freebsd.org> wrote: > On 06/04/13 22:35, Justin Hibbits wrote: > >> After a string of seemingly random hangs, I added invariants (but not >> witness) to my custom kernel config, and I get the following panic, >> recreated from a fuzzy cell phone picture: >> >> >> [thread pid -1 tid 1006665719 ] >> Stopped at 0: illegal instruction 0 >> db> panic: mutex ohci1 owned at >> /usr/home/chmeee/freebsd/head/**sys/dev/usb/usb_transfer.c:**2280 >> cpuid = 0 >> Uptime: 9h8m1s >> <my dump code> >> ... >> panic: msleep1 >> cpu = 0 >> KDB: enter: panic >> [ thread pid -1 tid 100665719 ] >> .... >> >> The first question I have is how the hell it got such a strange PID/TID, >> memory corruption my guess, something is stomping on the pcpu or >> something, >> and I think these hangs have only happened since I added a lot more memory >> (up to 12G from 4G, Andreas Tobler was seeing hangs as well), so it might >> be something in the moea64 pmap code, but that's pure speculation on my >> part. Then the other panic messages, owned mutex and panic in msleep1. I >> enabled more trace code, so hopefully the next time it panics I can >> collect >> better data. >> >> - Justin >> ______________________________**_________________ >> freebsd-ppc@freebsd.org mailing list >> http://lists.freebsd.org/**mailman/listinfo/freebsd-ppc<http://lists.freebsd.org/mailman/listinfo/freebsd-ppc>; >> To unsubscribe, send any mail to "freebsd-ppc-unsubscribe@**freebsd.org<freebsd-ppc-unsubscribe@freebsd.org> >> " >> > > Could you post the output from show reg? It looks like it tried to jump to > a null pointer there. > -Nathan >
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