Subject: Re: 2.6.34-rc1 eat my photo SD card :-(
From: Romano Giannetti <romanol@upcomillas.es>
To: Roland Dreier <rdreier@cisco.com>
Cc: Pierre Ossman <drzeus-mmc@drzeus.cx>, linux-kernel@vger.kernel.org
In-Reply-To: <ada8x5ec7oh.fsf@cisco.com>
References: <1193918202.8439.7.camel@rukbat>
	 <20071102182833.2c055446@poseidon.drzeus.cx>
	 <1194168583.10245.15.camel@rukbat>  <ada8x5ec7oh.fsf@cisco.com>
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Date: Mon, 05 Nov 2007 11:51:26 +0100
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On Sun, 2007-11-04 at 08:11 -0800, Roland Dreier wrote:
> I had something similar recently, trying to access an SD card in the
> internal drive of my thinkpad X60.  Fortunately, the data wasn't
> actually corrupted, but when I tried to copy the picture files off the
> card, I saw garbage filenames in the picture directory, [...]

> When I put the same card back in the camera and used the camera's dock
> to access the data via USB mass storage, everything worked fine.  So
> it does seem to be at least somewhat MMC-related.

It is reproducible for me, too, with the 128Mbyte card. Full logs are
here:

http://www.dea.icai.upcomillas.es/romano/linux/info/lk2624-rc1-mmc2/

a rapid grep shows at boot: 

Nov  5 08:45:40 rukbat kernel: [   26.538165] sr0: scsi3-mmc drive: 24x/24x writer dvd-ram cd/rw xa/form2 cdda tray
Nov  5 08:45:40 rukbat kernel: [   38.456554] PM: Adding info for No Bus:mmc0
Nov  5 08:45:40 rukbat kernel: [   38.456634] mmc0: SDHCI at 0xd0100800 irq 16 DMA

and when loading the card: 

Nov  5 09:21:14 rukbat kernel: [ 1632.002723] mmc0: new SD card at address e32f
Nov  5 09:21:14 rukbat kernel: [ 1632.002947] PM: Adding info for mmc:mmc0:e32f
Nov  5 09:21:14 rukbat kernel: [ 1632.024011] mmcblk0: mmc0:e32f SD128 123008KiB 
Nov  5 09:21:14 rukbat kernel: [ 1632.025327]  mmcblk0: p1
Nov  5 09:21:15 rukbat hald: mounted /dev/mmcblk0p1 on behalf of uid 1153

(I've trimmed away the spam by NetworkManager). 

and opening the folder in Nautilus:

Nov  5 09:21:43 rukbat kernel: [ 1654.235333] FAT: Filesystem panic (dev mmcblk0p1)
Nov  5 09:21:43 rukbat kernel: [ 1654.235893] FAT: Filesystem panic (dev mmcblk0p1)
Nov  5 09:21:43 rukbat kernel: [ 1654.235915] mmcblk0p1: rw=0, want=575135, limit=245919
...ad libitum.

and it's definitely a regression, the card is read under 2.6.23. I've
not a lot of time in my hands now, but maybe the next weekend I can try
a bisection...

Romano 


-- 
Sorry for the disclaimer --- ?I cannot stop it!


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