linux-kernel - Re: 2.a.30-rc7: fat filesystem misdetected as amiga

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <Pine.LNX.4.44L0.0905251704490.27717-100000@netrider.rowland.org>
Date:	Mon, 25 May 2009 17:08:12 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	"Michael S. Tsirkin" <mst@...hat.com>
cc:	Kay Sievers <kay.sievers@...y.org>,
	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>,
	Kernel development list <linux-kernel@...r.kernel.org>,
	USB list <linux-usb@...r.kernel.org>
Subject: Re: 2.a.30-rc7: fat filesystem misdetected as amiga

On Mon, 25 May 2009, Michael S. Tsirkin wrote:

> > So apparently this is a bug in the device; it doesn't respond correctly
> > to the first READ command.  But since it does respond correctly to 
> > later commands, everything works okay thereafter.  You ought to be able 
> > to recover from the error by running
> > 
> > 	blockdev --rereadpt /dev/sdb
> > 
> > manually.
> 
> Yes, this helps.
> Would it make sense for kernel to retry automatically?
> Why doesn't it?

I don't know the details in this case.  Most likely the error code 
(Logical Block Address Out of Range) is interpreted as a fatal 
non-retryable error.  For other sorts of errors, the kernel does retry.

> > As far as I can tell, this has nothing to do with any user programs in 
> > the distribution.  It appears to be entirely the device's fault.
> > 
> > Alan Stern
> 
> BTW, any idea how come I later get errors apparently from amiga fs?

Not a clue.  Unless it was some odd side effect of the partition code 
trying to interpret an uninitialized buffer.

Alan Stern

--
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/