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Date:   Tue, 27 Aug 2019 12:35:11 -0400
From:   "Theodore Y. Ts'o" <tytso@....edu>
To:     Harald Dunkel <harald.dunkel@...igo.com>
Cc:     mathias.nyman@...el.com, linux-usb@...r.kernel.org
Subject: Re: fsck on ext4: "WARN Wrong bounce buffer write length: 1024 != 0"

On Tue, Aug 27, 2019 at 08:00:14AM +0200, Harald Dunkel wrote:
> FYI: "fsck -y" on an external USB drive (USB-C, ext4) gave
> me a ton of messages
> 
> :
> [  191.261939] xhci_hcd 0000:05:00.0: WARN Wrong bounce buffer write length: 1024 != 0
> [  191.263743] xhci_hcd 0000:05:00.0: WARN Wrong bounce buffer write length: 1024 != 0
> [  191.263788] xhci_hcd 0000:05:00.0: WARN Wrong bounce buffer write length: 1024 != 0
> [  191.263840] xhci_hcd 0000:05:00.0: WARN Wrong bounce buffer write length: 1024 != 0
> [  191.266857] xhci_hcd 0000:05:00.0: WARN Wrong bounce buffer write length: 1024 != 0
> :
> 
> Related to 597c56e372dab2c7f79b8d700aad3a5deebf9d1b, AFAICT.
> 
> Kernel is 4.19.67-1 (Debian proposed-updates).

+mathias.nyman@...el.com, linux-usb@...r.kernel.org
linux-ext4 to BCC

That's a USB XHCI issue, not an ext4 issue.  I'm handing this to the
XHCI maintainer and the Linux USB mailing list.

Cheers,

						- Ted

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