Bug#736274: Data corruption on dm-crypt volumes over USB 3 (xhci-hcd)

[Ben Hutchings <ben@decadent.org.uk>]

On Tue, Jan 21, 2014 at 09:05:57PM +0100, skodde wrote:
> Package: linux-image-3.12-1-amd64
> Version: 3.12.8-1
> Severity: grave
> 
> When you create a dm-crypt volume on an external drive attached to an
> USB 3 port, every write operation on it will corrupt its data and
> cause the drive to reset.
[...]

There has been a regression in xhci_hcd (driver for USB 3 ports) in
Linux 3.12 that can cause disk write operations to fail, and fixes for
this are in progress.

So far as I am aware, the write failure is properly reported (except
that the operation is retried and the failure logged many times, which
is also a known bug) and previously written data are readable.  If
that is the case, I don't believe this qualifies as data corruption.

Ben.

-- 
Ben Hutchings
If more than one person is responsible for a bug, no one is at fault.