Date: Thu, 3 Nov 2005 15:40:13 +0100 From: Peter Holm <peter@holm.cc> To: Giorgos Keramidas <keramida@freebsd.org> Cc: freebsd-acpi@freebsd.org, robert.moore@intel.com, freebsd-current@freebsd.org, jkim@freebsd.org Subject: Re: Panic on boot with new ACPI-CA Message-ID: <20051103144013.GA43086@peter.osted.lan> In-Reply-To: <20051103142446.GA1787@flame.pc> References: <971FCB6690CD0E4898387DBF7552B90E0346CAFB@orsmsx403.amr.corp.intel.com> <20051103.094643.74756456.haro@h4.dion.ne.jp> <436961FD.3040605@root.org> <20051103014740.GA1586@flame.pc> <20051103142446.GA1787@flame.pc>
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On Thu, Nov 03, 2005 at 04:24:46PM +0200, Giorgos Keramidas wrote: > On 2005-11-03 03:47, Giorgos Keramidas <keramida@ceid.upatras.gr> wrote: > >On 2005-11-02 17:03, Nate Lawson <nate@root.org> wrote: > >> As I mentioned to Jung-uk, the problem is likely an error in > >> acpi-ca modifying memory after it has freed it. The way to > >> track this down is to enable memguard(9). See the man page for > >> info. You need to add options DEBUG_MEMGUARD to your kernel, > >> set the malloc type to watch to M_ACPICA, and rebuild your > >> kernel and modules. Memguard sets page permissions so we can > >> catch the culprit who is modifying the memory. > > > > This is exactly the messgae printed on my console at panic time > > -- of memory modified after free. I'm building a kernel with > > MEMGUARD now, but it's probably going to be a bit hard to get a > > kernel dump, because the panic happens before disks are > > available and I don't have a serial console here. > > This is definitely something that is ACPI-related. I updated my > sources to the last commit before the start of the ACPI import: > > build@flame:/home/build/src$ cvs -qR up -APd -D '2005/11/01 22:00:00 UTC' > > Rebuilt everything and I see no panics now. > > I'll use the watchpoint trick Nate posted when I have a new build > to test. > I've had the same problem with two of my boxes. Here's the result of a watchpoint: http://people.freebsd.org/~pho/stress/log/acpi.html I too came to the conclusion that the damage happened between 2005-11-01 22:00:00 UTC OK 2005-11-01 22:45:00 UTC panic - Peter > - Giorgos > > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" -- Peter Holm
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