On Mon, Jan 31, 2022 at 10:05:36PM +0100, Daniel Vetter wrote: > Half of it is protected by console_lock, but the other half is a lot > more awkward: Registration/deregistration of fbdev are serialized, but > we don't really clear out anything in con2fb_map and so there's > potential for use-after free mixups. > > First step is to encapsulate the lookup. > > Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx> > Cc: Helge Deller <deller@xxxxxx> > Cc: Daniel Vetter <daniel@xxxxxxxx> > Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > Cc: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx> > Cc: Du Cheng <ducheng2@xxxxxxxxx> > Cc: Claudio Suarez <cssk@xxxxxxxx> > Cc: Thomas Zimmermann <tzimmermann@xxxxxxx> Acked-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
