Re: [Regression] process hangs due to "USB: EHCI: work around siliconbug in Intels EHCI controllers"

From: Stephen Warren
Date: Tue Mar 19 2013 - 21:29:52 EST

On 03/19/2013 06:03 PM, Andreas Bombe wrote:
> The named commit (6402c796d3) causes a process to hang indefinitely in
> usb_kill_urb(). Reverting it fixes the problem. The bug also prevents
> suspend/shutdown/reboot from completing, presumably due to the hanging
> process.
> (Cc'ing Stephen Warren because I only found his report after I bisected
> it myself. Do you also see a blocked process?)

Yes, I believe the symptoms we're both seeing are identical.

> This is the hanging process on my system:
> [ 240.364085] INFO: task colord-sane:3619 blocked for more than 120 seconds.
> [ 240.364118] Call Trace:
> [ 240.364127] [<ffffffff81685af0>] schedule+0x65/0x67
> [ 240.364132] [<ffffffff8141a235>] usb_kill_urb+0xb5/0xd3
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at