I am seeing a kernel panic in FreeBSD 8.1, which is reproduced after physically 
attaching and detaching a USB device several times.  The kernel debugger shows 
that the panic happens in camisr where the cam_sim and its associated mutex are 
clearly destroyed.  sim->refcount is 0, sim->softc is 1 (UMASS_GONE), and the 
sim->mtx is destroyed (mtx_lock = 6).

This looks very similar to FreeBSD PR kern/153514, which is unfortunately 


Is it possible that the changes made to umass.c at r232358 might fix this issue?

Terence Telkamp
Storage Development Associate Engineer II
Dell | Compellent

freebsd-usb@freebsd.org mailing list
To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"

Reply via email to