https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=208668
Bug ID: 208668
Summary: 11.0-CURRENT since around December 2015 can be
remarkably troublesome with USB (for PersonaCrypt)
Product: Base System
Version: 11.0-CURRENT
Hardware: amd64
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: usb
Assignee: freebsd-usb@FreeBSD.org
Reporter: grahamper...@gmail.com
CC: freebsd-am...@freebsd.org
CC: freebsd-am...@freebsd.org
Created attachment 169141
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=169141&action=edit
A diagnostic file, produced by 'PC-BSD bug report tool'; includes dmesg and
other information
USB 3.1 Gen 1 (USB 3.0) Kingston DataTraveler G4
http://web.archive.org/web/20151107114009/http://www.kingston.com/en/usb/personal_business#DTIG4
32GB USB flash drive for PersonaCrypt in PC-BSD 11.0-CURRENT.
If required:
https://www.ixsystems.com/blog/pc-bsd-version-1012-now-available-for-the-security-conscious-desktop-user/
includes an outline of PersonaCrypt.
With PC-BSD 11.0-CURRENTNOV2015 and less, the Kingston device is *entirely
reliable* for PersonaCrypt with a circa 2007 Ergo Vista 621 notebook, with 4 GB
memory, where the interface is probably limited to USB 2.0.
With the following distributions, the same combination of hardware *ceases to
work very quickly* (typically within ten minutes of GELI attachment):
* PC-BSD 11.0-CURRENTDEC2015
* PC-BSD 11.0-CURRENTJAN2016
* PC-BSD 11.0-CURRENTFEB2016
* PC-BSD 11.0-CURRENTMAR2016
For a few weeks the Kingston device was good for PersonaCrypt with PC-BSD
11.0-CURRENTMAR2016 on a more modern notebook -- an early 2011 Apple
MacBookPro8,2 with 4 GB memory, https://support.apple.com/kb/SP620 – again, USB
2.0.
Today with PC-BSD 11.0-CURRENTAPRIL2016 before attempting to use the Kingston
device, I gave that Mac notebook an unusually 'hard push' (overnight, with
synth at ttyv1) – hard enough to use around 2 GB of 4 GB available swap. Then,
as I attempted to log in with PersonaCrypt, the problem recurred.
An extract:
usb_pc_common_mem_cb: Page offset was not preserved
(da0:umass-sim0:0:0:0): READ(10). CDB: 28 00 00 00 00 a8 00 00 80 00
(da0:umass-sim0:0:0:0): CAM status: CCB request completed with an error
(da0:umass-sim0:0:0:0): Retrying command
usb_pc_common_mem_cb: Page offset was not preserved
(da0:umass-sim0:0:0:0): READ(10). CDB: 28 00 00 00 00 a8 00 00 80 00
(da0:umass-sim0:0:0:0): CAM status: CCB request completed with an error
(da0:umass-sim0:0:0:0): Retrying command
usb_pc_common_mem_cb: Page offset was not preserved
(da0:umass-sim0:0:0:0): READ(10). CDB: 28 00 00 00 00 a8 00 00 80 00
(da0:umass-sim0:0:0:0): CAM status: CCB request completed with an error
(da0:umass-sim0:0:0:0): Retrying command
usb_pc_common_mem_cb: Page offset was not preserved
(da0:umass-sim0:0:0:0): READ(10). CDB: 28 00 00 00 00 a8 00 00 80 00
(da0:umass-sim0:0:0:0): CAM status: CCB request completed with an error
(da0:umass-sim0:0:0:0): Retrying command
usb_pc_common_mem_cb: Page offset was not preserved
(da0:umass-sim0:0:0:0): READ(10). CDB: 28 00 00 00 00 a8 00 00 80 00
(da0:umass-sim0:0:0:0): CAM status: CCB request completed with an error
(da0:umass-sim0:0:0:0): Error 5, Retries exhausted
I have photographs of today's incident, but I can not attach them at this time.
I understand that users of USB devices may be cautioned against using USB 2.0
for ZFS, but the difference between NOV2015 and DEC2015 was so extreme that a
bug report seems appropriate.
Historically (2010)
---
https://wiki.freebsd.org/USB noted:
Q: I see the following error and USB stops working
"Page offset was not preserved!"
A: Update your sources, this issue is fixed.
Recently (2015-11-24)
-
svn commit: r291251 - stable/9/sys/dev/usb
https://lists.freebsd.org/pipermail/svn-src-stable-9/2015-November/008097.html
> MFC r290326:
> Relax the BUS_DMA_KEEP_PG_OFFSET requirement to
> allow optimising allocation of DMA bounce buffers.
Modified:
stable/9/sys/dev/usb/usb_busdma.c
A wild guess: I wonder whether the problem(s) affecting my use of a USB device
are an unintended consequence of that allowance for optimisation.
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