linux-kernel - RE: linux-next: JFFS2 corruption

Open Source and information security mailing list archives

Date:	Thu, 28 Feb 2013 04:11:56 +0000
From:	"Philip, Avinash" <avinashphilip@...com>
To:	Mark Jackson <mpfj-list@...c.co.uk>,
	Stephen Rothwell <sfr@...b.auug.org.au>
CC:	David Woodhouse <dwmw2@...radead.org>,
	"linux-next@...r.kernel.org" <linux-next@...r.kernel.org>,
	"linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Al Viro <viro@...iv.linux.org.uk>
Subject: RE: linux-next: JFFS2 corruption

On Wed, Feb 27, 2013 at 20:42:01, Mark Jackson wrote:
> On 26/02/13 23:18, Stephen Rothwell wrote:
> > Hi Mark,
> > 
> > On Tue, 26 Feb 2013 15:50:18 +0000 Mark Jackson <mpfj-list@...c.co.uk> wrote:
> >>
> >> Just tested the current next-20130226 on a custom AM335X board, and if I mount
> >> our JFFS2 image as read/write, the next reboot shows the image as being corrupt.
> >>
> >> If I reprogram the jffs2 image into NAND and only mount the volume as read-only,
> >> no corruption occurs and the system remains intact.
> >>
> >> I have also tested:-
> >>
> >> (a) reprogram ubifs image into nand
> >> (b) boot the volume as read-only (corrupt -> no)
> >> (c) remount the volume as read/write
> >> (d) rebooting the volume as read-only (corrupt -> yes)
> > 
> > Thanks for all the testing.  Sam questions as in my other email.
> 
> Okay, just tested 3v8 plus:-
> 
> https://patchwork.kernel.org/patch/1931251/
> https://patchwork.kernel.org/patch/1931221/
> https://patchwork.kernel.org/patch/1931201/
> and changed drivers/mtd/nand/elm.c, line 388 "ti,am33xx-elm" to "ti,am3352-elm"
> 
> This produces an identical corruption.
> 
> I have also tested next-20130225 and next-20130227, and both cause the same corruption.

JFFS2 is not supported in am335x with BCH8 ecc scheme because of ECC layout constraints.
Reasons for disabling JFFS2 support documented in the wiki
http://processors.wiki.ti.com/index.php/AM335x_JFFS2_Support_Guide#Reasons_for_disabling_JFFS2_support

Thanks
Avinash
> 
> Regards
> Mark J.
> 
> ______________________________________________________
> Linux MTD discussion mailing list
> http://lists.infradead.org/mailman/listinfo/linux-mtd/
> 

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives