Subject: Re: Crashes when removing an usb flash reader
To: None <>
From: Steven M. Bellovin <>
List: current-users
Date: 07/21/2003 10:53:51
In message <>, MLH writes:
>Michal 'hramrach' Suchanek wrote:
>> On Sat, Jul 19, 2003 at 12:59:27PM +0200, Lennart Augustsson wrote:
>>> Can you get into the debugger when it happens?
>>>    -- Lennart
>> The first time I encountered this I got an uvm fault and was dropped to
>> the debugger. However, the command that was supposed to give a stack trace
>> caused one more (iirc the same) fault and sync did not finish, no coredump
>> after reboot.
>FWIW, if I remove my flash reader before unmounting it on all of
>the NetBSD hosts I use it on, that host completely locks up. No
>coredump, no debugger, no remote login, it doesn't even respond to
>a ping at that point. It has been this way since this reader was
>first enabled (last fall - post 1.6 -current).

The same is true of pcmcia cards, including ones that are removed while 
the machine is suspend.  *That* is a bad misfeature.

		--Steve Bellovin,