linux-kernel - Re: Panic early in boot

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Date:	Sat, 06 Jun 2009 11:39:45 +0200
From:	Jiri Slaby <jirislaby@...il.com>
To:	Jeff Mitchell <jeffrey.mitchell@...il.com>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Panic early in boot

On 06/05/2009 11:39 PM, Jeff Mitchell wrote:
> Output is pasted below.  It's hand-typed from a screenshot, so
> hopefully I didn't mistype anything.  

Don't worry to append a link to the screenshot next time ;).

> console [earlyvga0] enabled
> DMI present.
> PANIC: early exception 0e rip 10:ffffffff80866edc error 0 cr2 ffffffffeff44003d
> Pid: 0, comm: swapper Not tainted 2.6.29-gentoo-r5 #2
> Call Trace:
> early_idt_handler+0x5e/0x71
> dmi_string_nosave+0x34/0x80
> dmi_string_nosave+0x67/0x80
> dmi_string+0xa/0x6e
> dmi_save_ident+0x1b/0x2a
> dmi_decode+0x72/0x492
> _spin_unlock_irqrestore+0x14/0x17
> __early_set_fixmap+0xa0/0xa7
> dmi_table+0x4e/0x78
> dmi_scan_machine+0x132/0x19f
> setup_arch+0x34d/0x636
> early_idt_handler+0x0/0x71
> start_kernel+0x86/0x35e
> x86_64_start_kernel+0xed/0xf6
> RIP dmi_string_nosave+0x34/0x80

Looks like dmi_string_nosave gets a mess. It tries to dereference
0xffffffffeff44003d. Could you investigate to which save_indent in
dmi_decode does the dmi_decode+0x72 correspond to?

Is this vanilla, i.e. what does -gentoo-r5 mean?

And also append a dmidecode output from a working kernel.
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