Date: Sun, 29 Jul 2012 15:15:09 +1000 From: Greg 'groggy' Lehey <grog@FreeBSD.org> To: freebsd-current@freebsd.org Subject: Re: Panic on boot after svn update Message-ID: <20120729051509.GA40138@eureka.lemis.com> In-Reply-To: <20120729045354.GA1054@weller-fahy.com> References: <20120729045354.GA1054@weller-fahy.com>
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On Sunday, 29 July 2012 at 0:53:55 -0400, David J. Weller-Fahy wrote:
> So, I recently updated and encountered a panic on boot which is
> reproducible, and wanted to see if anyone's encountered this before I
> file a PR. I found a problem in (I think) recent changes to the e1000
> driver. I'm running FreeBSD 10-CURRENT as a VirtualBox guest.
>
> #v+
> FreeBSD fork-pooh 10.0-CURRENT FreeBSD 10.0-CURRENT #0 r238764: Sat Jul 28 17:21:47 EDT 2012 root@fork-pooh:/usr/obj/usr/src/sys/GENERIC amd64
> #v-
>
> I have the Adapter Type set to, "Intel PRO/1000 MT Desktop (82540EM)", and the
> following card is detected by pciconf.
> ...
> Updating motd:.
> Starting ntpd.
> panic: _mtx_lock_sleep: recursed on non-recursive mutex em0 @ /usr/src/sys/dev/e1000/if_lem.c:881
<aol>Me too</aol> The panic message is identical, and I'm also running
in VirtualBox. My version string (from strings on the kernel) is:
FreeBSD 10.0-CURRENT #4: Sat Jul 28 09:45:10 EST 2012
root@swamp.lemis.com:/usr/obj/src/FreeBSD/svn/head/sys/GENERIC
Note that this is a different EST (UTC+10).
I have a dump, but I can't get much sense out of it:
kgdb: kvm_read: invalid address (0x354540a)
#0 0x00000000 in ?? ()
I'm currently rebuilding the system, but it looks as if that won't
help much. One interesting point is that the first panic happened
after installing the new image (from yesterday's sources) while I was
trying to reboot with the old kernel, dating back to
FreeBSD swamp.lemis.com 10.0-CURRENT FreeBSD 10.0-CURRENT #3: Sun May 13 14:34:43 EST 2012 root@swamp.lemis.com:/usr/obj/src/FreeBSD/svn/head/sys/GENERIC i386
Greg
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