Date: Tue, 10 Nov 2009 00:46:11 -0600 From: Jacob Lambert <tharant@gmail.com> To: Nathan Whitehorn <nwhitehorn@freebsd.org> Cc: FreeBSD PowerPC ML <freebsd-ppc@freebsd.org> Subject: Re: 8.0-RC2 on Rackmac3,1 - fatal kernel trap Message-ID: <BE93ABB0-0344-4B1B-A752-8E8CE1562155@gmail.com> In-Reply-To: <4AF90970.4080708@freebsd.org> References: <aff3f9930911041456o732ea890n6cda52783e8db286@mail.gmail.com> <4AF219DF.2040309@freebsd.org> <B06424FF-FE87-441E-A8C3-ED401A8561FE@gmail.com> <aff3f9930911060851l12e52e87n653b8f96ba8cb7d7@mail.gmail.com> <4AF46399.20803@freebsd.org> <aff3f9930911061219g61be95a9l40884c854c7b4971@mail.gmail.com> <4AF575D2.5020101@freebsd.org> <4AF577F6.2080708@freebsd.org> <4AF90970.4080708@freebsd.org>
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Terrific, I'll give it a test first thing in the morning. Thanks for all the help! -jacob On Nov 10, 2009, at 12:34 AM, Nathan Whitehorn <nwhitehorn@freebsd.org> wrote: > This problem should be fixed now. I am uploading new 9.0-SNAP ISOs > to http://people.freebsd.org/~nwhitehorn/9.0-20091110-SNAP. The > relevant change will also be in 8.0-RC3. > -Nathan > > Nathan Whitehorn wrote: >> I just took a look at the data layout in the kernel, and >> translations immediately precedes ofwcall, so there is no question >> that the buffer size has been exceeded and that the zeroing the >> translations buffer has killed ofwcall. I'll send you a new CD with >> a larger buffer (and bounds checking) sometime at the beginning of >> next week. Hopefully, the change will also be merged in 8.0-RELEASE. >> -Nathan >> >> Nathan Whitehorn wrote: >>> This is the middle of reading out the current MMU translations >>> from Open Firmware (the OF_getprop() call at line 902 of >>> mmu_oea64.c). It's possible the size of the translations buffer >>> has been exceeded, and memory has been trashed, which would also >>> explain why there is a difference between CD and netbooting. >>> Peter, any ideas? >>> -Nathan >>> >>> Jacob Lambert wrote: >>>> Here's a transcript with 'show registers' and 'bt' after trying to >>>> boot your 9.0-20091106-SNAP-powerpc-bootonly.iso. >>>> >>>> --- >>>> 0 > boot cd:,\boot\loader cd:0 load-size=3994c adler32=a40c7b0c >>>> >>>> Loading ELF >>>> Consoles: Open Firmware console >>>> >>>> FreeBSD/powerpc Open Firmware loader, Revision 0.1 >>>> (root@elpis.tachypleus.net, Fri Nov 6 04:12:54 UTC 2009) >>>> Memory: 2097152KB >>>> Booted from: /ht/pci@5/ata-6/disk@0 >>>> >>>> Loading /boot/defaults/loader.conf >>>> /boot/kernel/kernel data=0x72f8b0+0x199f98 syms= >>>> [0x4+0x5fad0+0x4+0x83f05] >>>> \ >>>> Hit [Enter] to boot immediately, or any other key for command >>>> prompt. >>>> Booting [/boot/kernel/kernel] in 9 seconds... >>>> >>>> Type '?' for a list of commands, 'help' for more detailed help. >>>> OK boot >>>> Kernel entry at 0x100100 ... >>>> KDB: debugger backends: ddb >>>> KDB: current backend: ddb >>>> >>>> fatal kernel trap: >>>> >>>> exception = 0x7 (program) >>>> srr0 = 0x0 >>>> srr1 = 0x83030 >>>> lr = 0x582038 >>>> curthread = 0 >>>> >>>> [thread pid -1 tid 0 ] >>>> Stopped at 0: illegal instruction 0 >>>> db> show registers >>>> r0 0 >>>> r1 0x7e9e20 tmpstk+0x1e20 >>>> r2 0 >>>> r3 0x829998 args.5817 >>>> r4 0xff88ed18 >>>> r5 0x829998 args.5817 >>>> r6 0x9b60ac translations >>>> r7 0x960 dsisize+0x8bc >>>> r8 0x1 >>>> r9 0 >>>> r10 0x1c32ce4 >>>> r11 0 >>>> r12 0x24000028 >>>> r13 0 >>>> r14 0 >>>> r15 0 >>>> r16 0 >>>> r17 0 >>>> r18 0 >>>> r19 0x100100 __start >>>> r20 0xeaf000 >>>> r21 0x4 >>>> r22 0x1c2e330 >>>> r23 0x9c9848 end >>>> r24 0x100100 __start >>>> r25 0x9c5f54 mmu_kernel_obj >>>> r26 0x960 dsisize+0x8bc >>>> r27 0x9b60ac translations >>>> r28 0x7e00d4 >>>> r29 0xff88ed18 >>>> r30 0x3030 dsisize+0x2f8c >>>> r31 0x7e9e20 tmpstk+0x1e20 >>>> srr0 0 >>>> srr1 0x83030 >>>> lr 0x582038 openfirmware+0x120 >>>> ctr 0 >>>> cr 0x24000022 >>>> xer 0 >>>> dar 0 >>>> dsisr 0 >>>> 0: illegal instruction 0 >>>> db> bt >>>> Tracing pid -1 tid 0 td 0 >>>> 0x007e9e80: at ofw_std_getprop+0x3c >>>> 0x007e9ea0: at OF_getprop+0x8c >>>> 0x007e9ed0: at moea64_bridge_bootstrap+0x5c8 >>>> 0x007e9f90: at kernbase+0xfc >>>> db> >>>> --- >>>> >>>> On Fri, Nov 6, 2009 at 11:57 AM, Nathan Whitehorn >>>> <nwhitehorn@freebsd.org> wrote: >>>> >>>>> Jacob Lambert wrote: >>>>> >>>>>> All-righty, I've got three boot transcripts for you're viewing >>>>>> pleasure. >>>>>> >>>>>> First, I snagged a copy of 8.0-CURRENT-200906-powerpc-disc1.iso >>>>>> and >>>>>> burned it. I've removed the ATI video card so this is all done >>>>>> from >>>>>> the serial console with Open Firmware. Here's the transcript: >>>>>> >>>>>> >>>>> [snip] >>>>> >>>>>> Next, being a bored and curious sysadmin, I managed to find >>>>>> that you >>>>>> had just uploaded 9.0-20091106-SNAP-powerpc-bootonly.iso to >>>>>> your home >>>>>> folder on people.freebsd.org. I suppose it's premature for me >>>>>> to be >>>>>> fiddling with it but like I said, I'm bored. :) Here's the >>>>>> transcript: >>>>>> >>>>>> >>>>> That is remarkably bored and curious: you beat my email to tell >>>>> you about >>>>> it! I'd be very interested in the output of 'show registers' and >>>>> also 'bt', >>>>> if the kernel is on the real stack yet. >>>>> -Nathan >>>>> >>>>> >>>> >>>> >>>> >>>> >>> >>> _______________________________________________ >>> freebsd-ppc@freebsd.org mailing list >>> http://lists.freebsd.org/mailman/listinfo/freebsd-ppc >>> To unsubscribe, send any mail to "freebsd-ppc-unsubscribe@freebsd.org >>> " >> >> _______________________________________________ >> freebsd-ppc@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-ppc >> To unsubscribe, send any mail to "freebsd-ppc- >> unsubscribe@freebsd.org" >home | help
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