misc/116898: panic: sleeping thread while using USB hard drive

[Kris Kennaway]

The following reply was made to PR usb/116898; it has been noted by GNATS.

From: Kris Kennaway <kris at FreeBSD.org>
To: Richard Puga <puga at mauibuilt.com>
Cc: freebsd-gnats-submit at FreeBSD.org
Subject: Re: misc/116898: panic: sleeping thread while using USB hard drive
Date: Sun, 20 Jan 2008 14:02:16 +0100

 Richard Puga wrote:
 
 > The errors on the screen which dont make it to the log are;
 > 
 > sleeping thread (tid 100015, pid 19) owns a non-sleepable-lock
 > panic: sleeping thread
 > cpuid=1
 > 
 > and
 > 
 > panic: Trying sleep, but thread marked as sleeping prohimited
 > cpuid=0
 > [thread pid 13 tid 100002]
 > stoped at kbd-enter + ox32: leave db7
 >> How-To-Repeat:
 > backup to a usb drive, the problem will occur anywhere from 5 minutes to 5 hours.
 >> Fix:
 
 Please follow up with the steps described here to complete your PR so 
 that someone can begin to look at it:
 
 http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug.html
 
 Kris