Re: kern/37915: vt100 + wscons + tty vmlocking changes = panic

[David Holland <dholland-bugs%netbsd.org@localhost>]

On Wed, Jan 30, 2008 at 01:30:00AM +0000, dholland%eecs.harvard.edu@localhost 
wrote:
 > >Synopsis:       vt100 + wscons + tty vmlocking changes = panic
 >
 > Sending some VT100 control sequences to wscons will panic the kernel.
 > 
 > The problem is that ttwrite() holds tty_lock while calling ttstart();
 > this makes its way down to wsemul_vt100_handle_csi(), which for
 > several sequences that report stuff back calls wsdisplay_emulinput(),
 > which calls ttyinput(), which tries to get tty_lock again.

This still happens with up-to-the-minute current.

-- 
David A. Holland
dholland%netbsd.org@localhost