Date: Tue, 26 Aug 2003 18:27:13 -0600 From: "Kenneth D. Merry" <ken@kdm.org> To: Martin <nakal@web.de> Cc: FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: Kernel panic with CAM on current (fatal trap 12) Message-ID: <20030827002713.GA13282@panzer.kdm.org> In-Reply-To: <1061938195.9309.65.camel@klotz.local> References: <1061938195.9309.65.camel@klotz.local>
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On Wed, Aug 27, 2003 at 00:49:56 +0200, Martin wrote: > > Hi, > > I compiled world and kernel tonight (Aug 26th) on my Thinkpad > R40 with a CD/RW drive. I tried my old settings with cam > enabled so I can use cdrecord. > > During boot I got a kernel panic about 10 seconds after the > kernel detected the CD/RW drive. Here some info: > > Fatal trap 12: page fault while in kernel mode > fault virtual address = 0x0 > fault code = supervisor write, page not present > [...IP/SP reg values changing...] > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, def32 1, gran 1 > processor eflags = interrupt enabled, resume, IOPL = 0 > current process = 20 (swi3:cambio) > trap number = 12 > > In verbose mode it also showed some "non-retryable > errors" while accessing ata0 and sbp0, before the > kernel stops with the panic. > > I could start the latest kernel after removing > sbp, umass, cam-stuff and atapicam and recompiling > it. The last kernel without these effects was compiled > on Aug 18th. > > I hope it helps, if not, I can write down more > information for you. There are known problems with atapicam. Try enabling DDB in your kernel config, and get a stack trace. If you're panicing in free_hcb(), disable atapicam and try again. Ken -- Kenneth Merry ken@kdm.org
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