kern/124530: removing a USB flash drive while the drive is being accessed causes a kernel panic

[Simson Garfinkel]

>Number:         124530
>Category:       kern
>Synopsis:       removing a USB flash drive while the drive is being accessed causes a kernel panic
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Jun 12 23:30:01 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     Simson Garfinkel
>Release:        7.0-RELEASE
>Organization:
Naval Postgraduate School
>Environment:
FreeBSD copy.ern.nps.edu 7.0-RELEASE FreeBSD 7.0-RELEASE #0: Sun Feb 24 19:59:52 UTC 2008     root at logan.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386


>Description:
1. insert a flash disk into the usb slot. Have it mount as /dev/da0
2. Type this:
    dd if=/dev/da0 of=/dev/null
3. Remove the flash disk.

The kernel panics.
>How-To-Repeat:
Do it again.
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: