[Bug 281524] msdosfs error over USB causes a kernel panic

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=281524

            Bug ID: 281524
           Summary: msdosfs error over USB causes a kernel panic
           Product: Base System
           Version: 14.1-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: misc
          Assignee: bugs@FreeBSD.org
          Reporter: carlj@peak.org

Created attachment 253591
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=253591&action=edit
The core.txt file from the kernel dump.

I was working with a msdosfs from a Raspberry Pi Pico mounted on my system, and
some kind of error caused the system to unmount, and then the system crashed. 
This has now happened twice but a linux system handles this without any
problem.  The Pico is running circuitpython which creates its own msdosfs that
can be mounted and written to.  I had tried to rename a file on that, and it
appears that something about that caused the crash.  This appears similar to
Bug ID #185374, but that has been around for years with no resolution.

I have moved the Pico to a Raspberry Pi system running linux to avoid crashing
my main system, but I can move it back if needed for further debugging.

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