jbMacAZ <mailto:jbmacbro...@yahoo.com> 2016-04-20 22:39:07 UTC
System hangs requiring hard reboot. System behaves normally with earlier
kernels upto 4.6-rc3. Reverting all edits to drivers/USB/ between rc3
and rc4 does NOT fix the problem. Problem first appears at
4.6-rc3-next20160412, still present 4.6-rc4-next20160420.
To reproduce, attach a powered USB hub to USB3 port on an ASUS T100CHI.
Attach a USB thumb drive (mine was 32GB Samsung USB3.0) to powered hub.
Boot into latest kernel, unmount flash drive. Unplug it and the system
freezes. May freeze when plugging in a flash drive, but not as
consistent. Simplest workaround is to use older kernel (like -rc3).
Other details: Ubuntu 16.04 (i686) 2GB Ram, Intel baytrail atom Z3775,
generic USB2 4-port hub (BC 1.1 charging) OTG cable micro USB3.0 to USB-A.
Thanks for looking,
John
[reply <https://bugzilla.kernel.org/show_bug.cgi?id=116821#add_comment>]
[−] <https://bugzilla.kernel.org/show_bug.cgi?id=116821#> Comment 1
<https://bugzilla.kernel.org/show_bug.cgi?id=116821#c1> Greg
Kroah-Hartman <mailto:g...@kroah.com> 2016-04-21 02:27:34 UTC
On Wed, Apr 20, 2016 at 10:39:07PM +0000,bugzilla-dae...@bugzilla.kernel.org
<mailto:bugzilla-dae...@bugzilla.kernel.org> wrote:
https://bugzilla.kernel.org/show_bug.cgi?id=116821
Bug ID: 116821
Summary: Regression: System freeze when unplugging unmounted
USB flash drive from powered hub
Please send to thelinux-...@vger.kernel.org <mailto:linux-usb@vger.kernel.org>
mailing list.
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