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

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Message-ID: <Pine.LNX.4.64.0808281737150.28552@vixen.sonytel.be>
Date:	Thu, 28 Aug 2008 17:40:51 +0200 (CEST)
From:	Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>
To:	Jared Hulbert <jaredeh@...il.com>
cc:	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, cotte@...ibm.com, nickpiggin@...oo.com.au
Subject: Re: [PATCH 00/10] AXFS: Advanced XIP filesystem

On Fri, 22 Aug 2008, Jared Hulbert wrote:
> > The version in SVN seems to be slightly older than the one you submitted?
> 
> Oops.  Okay I must have neglected to sync at the very end.  Thanks.
> 
> I forgot, there is also a git repo at
> 
> git://git.infradead.org/users/jehulber/axfs.git
> 
> > Which platform(s) do you use for testing?
> 
> ARM, x86
> 
> > I gave AxFS a try on PS3 (ppc64, always use big-endian 64-bit for testing new
> > code ;-).
> 
> Smart.  Hmmm, If only I had a PS3....

I heard you got one? ;-)

> > When mounting the image, I got the crash below:
> >
> > | attempt to access beyond end of device
> > | loop0: rw=0, want=4920, limit=4912

Interestingly, it also doesn't work on UserModeLinux (x86, 32-bit):

| attempt to access beyond end of device
| loop0: rw=0, want=24, limit=16
| 
| EIP: 0073:[<0811ec67>] CPU: 0 Not tainted ESP: 007b:19515c38 EFLAGS: 00210212
|     Not tainted
| EAX: 00000000 EBX: 00001000 ECX: 19484aa0 EDX: 190d9f0c
| ESI: 195ee000 EDI: 19515cd0 EBP: 19515c6c DS: 007b ES: 007b
| 08247af0:  [<08069ba3>] show_regs+0xb4/0xb9
| 08247b1c:  [<080591ee>] segv+0x222/0x23a
| 08247bbc:  [<08059296>] segv_handler+0x90/0x9a
| 08247c68:  [<080649b8>] sig_handler_common+0x63/0x72
| 08247ce0:  [<08064cac>] sig_handler+0x31/0x3d
| 08247cec:  [<08064c0b>] handle_signal+0x4c/0x7a
| 08247d0c:  [<08066327>] hard_handler+0xf/0x14
| 08247d1c:  [<005c0420>] 0x5c0420
| 
| Kernel panic - not syncing: Kernel mode fault at addr 0x14, ip 0x811ec67
| 
| EIP: 0073:[<4010a44e>] CPU: 0 Not tainted ESP: 007b:bfa323a0 EFLAGS: 00200246
|     Not tainted
| EAX: ffffffda EBX: 080595f8 ECX: 080595c8 EDX: 080595d8
| ESI: c0ed0000 EDI: 00000000 EBP: bfa323d8 DS: 007b ES: 007b
| 08247a5c:  [<08069ba3>] show_regs+0xb4/0xb9
| 08247a88:  [<08059462>] panic_exit+0x25/0x3b
| 08247a9c:  [<08083642>] notifier_call_chain+0x27/0x4c
| 08247ac4:  [<0808367e>] __atomic_notifier_call_chain+0x17/0x19
| 08247ad4:  [<08083695>] atomic_notifier_call_chain+0x15/0x17
| 08247af0:  [<0806fd87>] panic+0x52/0xd8
| 08247b10:  [<080591fc>] segv+0x230/0x23a
| 08247bbc:  [<08059296>] segv_handler+0x90/0x9a
| 08247c68:  [<080649b8>] sig_handler_common+0x63/0x72
| 08247ce0:  [<08064cac>] sig_handler+0x31/0x3d
| 08247cec:  [<08064c0b>] handle_signal+0x4c/0x7a
| 08247d0c:  [<08066327>] hard_handler+0xf/0x14
| 08247d1c:  [<005c0420>] 0x5c0420

Commandline is `mount image.axfs /mnt -o loop -t axfs'.

Is there something wrong with the axfs version you submitted, or with
mkfs.axfs?

With kind regards,

Geert Uytterhoeven
Software Architect

Sony Techsoft Centre Europe
The Corporate Village · Da Vincilaan 7-D1 · B-1935 Zaventem · Belgium

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