linux-kernel - Re: [PATCH 00/10] AXFS: Advanced XIP filesystem

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Date:	Fri, 22 Aug 2008 15:09:09 -0700
From:	Will Marone <wjmarone@...il.com>
To:	Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>
CC:	Jared Hulbert <jaredeh@...il.com>, Linux-kernel@...r.kernel.org,
	linux-embedded@...r.kernel.org,
	linux-mtd <linux-mtd@...ts.infradead.org>,
	Jörn Engel <joern@...fs.org>,
	tim.bird@...SONY.COM
Subject: Re: [PATCH 00/10] AXFS: Advanced XIP filesystem

Geert Uytterhoeven wrote:
> I gave AxFS a try on PS3 (ppc64, always use big-endian 64-bit for testing new
> code ;-).
> When mounting the image, I got the crash below:
>
> | attempt to access beyond end of device
> | loop0: rw=0, want=4920, limit=4912
> | Unable to handle kernel paging request for data at address 0x00000028
> | Faulting instruction address: 0xd000000000037988
> | Oops: Kernel access of bad area, sig: 11 [#1]
> | SMP NR_CPUS=2 PS3
>
> When mounting (also on PS3) an image created on ia32, I get a different crash:
>
> | axfs: wrong magic
>   ^^^^^^^^^^^^^^^^^
> | Unable to handle kernel paging request for data at address 0x000003a8
> | Faulting instruction address: 0xd0000000000355f0
> | Oops: Kernel access of bad area, sig: 11 [#1]
> | SMP NR_CPUS=2 PS
Geert,

Thanks for giving it a spin, especially on a platform as different from 
ours as the PS3.

Before I dig more into what happened, I was wondering if you could tell 
me a bit more
about your environment, particularly how you supplied the filesystem to 
the kernel and
your mount commandline (also, if you used a boot commandline, what it was.)

My first guess would be a ppc64 compiled UML session, but I'd like to be 
a bit more sure.


Will Marone
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