linux-kernel - Re: Rootfs in eMMC: Kernel panic ...Attempted to kill init!

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Message-Id: <1245685846.15580.107.camel@pc1117.cambridge.arm.com>
Date:	Mon, 22 Jun 2009 16:50:46 +0100
From:	Catalin Marinas <catalin.marinas@....com>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	Sudeep K N <sudeepholla.maillist@...il.com>,
	linux-arm-kernel@...ts.arm.linux.org.uk, drzeus-mmc@...eus.cx,
	linux-kernel@...r.kernel.org
Subject: Re: Rootfs in eMMC: Kernel panic ...Attempted to kill init!

On Mon, 2009-06-22 at 16:43 +0100, Russell King - ARM Linux wrote:
> On Mon, Jun 22, 2009 at 07:43:40PM +0530, Sudeep K N wrote:
> > Thanks for the suggestion.
> > With the logs it is clear that crash is in the userspace.
> > I am getting one of the 2 logs(below) randomly.
> > >From trial#2,
> > pgd = c60bc000
> > [00000000] *pgd=061ee031, *pte=00000000, *ppte=00000000
> > I could understand that the page tables are not proper.
> > I am not able understand how to proceed.
> > 
> > Trial#1:
> > VFS: Mounted root (ext2 filesystem).
> > Freeing init memory: 108K
> > linuxrc (1): undefined instruction: pc=40008100
> > Code: e08e3003 eb002842 e2801008 e58c217c (e0812103)
> 
> Your processor is misbehaving; none of the above hex codes are undefined
> instructions, so you shouldn't be taking an undefined instruction trap.

The undefined instruction aborts are possible in this situation since
instructions are fetched via the I-cache while the abort handler shows
the code via the D-cache.

-- 
Catalin

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