kern/63621: [usb] USB MemoryStick Reader stalls/crashes system

[Herve Quiroz]

The following reply was made to PR kern/63621; it has been noted by GNATS.

From: Herve Quiroz <herve.quiroz at esil.univ-mrs.fr>
To: Dmitry Morozovsky <marck at rinet.ru>,
	freebsd-gnats-submit at freebsd.org
Cc:  
Subject: Re: kern/63621: [usb] USB MemoryStick Reader stalls/crashes system
Date: Thu, 9 Dec 2004 18:58:17 +0100

 On Wed, Dec 08, 2004 at 02:49:34AM +0100, Herve Quiroz wrote:
 > I've been experimenting with 5.3-RELEASE and 5.3-STABLE myself. The USB
 > drive will work in most of the cases without the need of the trick I
 > mentioned earlier. I can boot the system, plug the drive, mount, and
 > 'svn update' and everything will go fine. Same regarding rsync or 'cp
 > -r'...
 > 
 > Anyway, as I said, this will work in "most of the cases". Indeed, on 5.3
 > I am experiencing a new problem: sometimes, when I plug my drive, the
 > system freezes. No panic, no trace in the logs (I have not enabled any
 > debug or verbose mode though -- tell me if you require such trace). The
 > system just hangs. Then there must be something eating the CPU as my fan
 > will shortly after that start to increase its speed automatically.
 
 I forgot to mention that I have enabled PREEMPTION in my kernel config
 lately. I will try to recompile a kernel without preemption and test
 plugging my USB drive to be sure.
 
 Herve