Date: Tue, 24 Apr 2007 17:42:20 -0400 From: Kris Kennaway <kris@obsecurity.org> To: Remco Bressers <rbressers@signet.nl> Cc: freebsd-bugs@FreeBSD.org, pvdsteen@signet.nl, "Michael R. Wayne" <freebsd@wayne47.com>, Kris Kennaway <kris@obsecurity.org> Subject: Re: kern/111458: [panic] Panic on 6.2-RELEASE AMD in kern_mutex Message-ID: <20070424214220.GA40150@xor.obsecurity.org> In-Reply-To: <1177450685.5638.29.camel@localhost> References: <200704242110.l3OLA93u057070@freefall.freebsd.org> <20070424211426.GA39603@xor.obsecurity.org> <1177449699.5638.25.camel@localhost> <20070424212637.GA39829@xor.obsecurity.org> <1177450685.5638.29.camel@localhost>
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On Tue, Apr 24, 2007 at 11:38:05PM +0200, Remco Bressers wrote: > On Tue, 2007-04-24 at 17:26 -0400, Kris Kennaway wrote: > > On Tue, Apr 24, 2007 at 11:21:39PM +0200, Remco Bressers wrote: > > > On Tue, 2007-04-24 at 17:14 -0400, Kris Kennaway wrote: > > > > On Tue, Apr 24, 2007 at 09:10:09PM +0000, Remco Bressers wrote: > > > > > > > > > To update this bugreport and to keep it 'warm' > > > > > > > > > > I've got the very same problem overhere. > > > > > > > > > > Our box : > > > > > > > > > > # uname -r > > > > > 6.2-RELEASE-p2 > > > > > > > > > > This is an amd64 release > > > > > > > > > > Updates on GENERIC : > > > > > > > > > > options QUOTA > > > > > device pf > > > > > device pflog > > > > > options SMP > > > > > > > > > > Kernel messages : > > > > > > > > > > cpuid = 0; apic id = 00 > > > > > fault virtual address = 0x18c > > > > > fault code = supervisor read, page not present > > > > > current process = 5 (thread taskq) > > > > > trap number = 12 > > > > > panic: page fault > > > > > cpuid = 0 > > > > > > > > How do you know it is "the very same problem"? In order to determine > > > > this you need to compare backtraces from the panic, which you didn't > > > > provide. > > > > > > I contacted the submitter for this problem and compared hardware and > > > software. The symptoms are the same > > > > Which just means "it crashed" > > > > , the kernel panic is the same and > > > > The panic message also just means "it crashed" > > > > > the installed FreeBSD version is exactly the same. > > > > You're both running the most recent version, no real surprises there. > > > > > Sounds fair enough to me. Ofcourse i cannot be 100% sure, but it > > > sounds too obvious to me. > > > > Well, maybe, but I respectfully submit that you don't understand the > > issue well enough to conclude that :) Please follow up with a > > backtrace and then we'll see where things stand. > > You didn't write anything about the fact that software combinations + > hardware is almost identical! That's no coincidence in my humble > opinion :). Anyway.. I'd prefer not to prematurely jump to conclusions before you have any supporting evidence. It is of course an obviously true statement that two identical systems may panic in two completely different and unrelated ways. > The problem in this case is, that the backtrace isn't written to disk. I > must wait for the next opportunity to get that backtrace. OK, let us know. Kris
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