On Mon, Apr 26, 2021 at 11:35:46AM +0200, Johan Hovold wrote: > On Mon, Apr 26, 2021 at 11:29:11AM +0200, Leonardo Antoniazzi wrote: > > On Mon, 26 Apr 2021 10:11:49 +0200 > > Johan Hovold <johan@xxxxxxxxxx> wrote: > > > > > Commit 8a12f8836145 ("net: hso: fix null-ptr-deref during tty device > > > unregistration") fixed the racy minor allocation reported by syzbot, but > > > introduced an unconditional NULL-pointer dereference on every disconnect > > > instead. > > > > > > Specifically, the serial device table must no longer be accessed after > > > the minor has been released by hso_serial_tty_unregister(). > > > > > > Fixes: 8a12f8836145 ("net: hso: fix null-ptr-deref during tty device unregistration") > > > Cc: stable@xxxxxxxxxxxxxxx > > > Cc: Anirudh Rayabharam <mail@xxxxxxxxxxxxx> > > > Reported-by: Leonardo Antoniazzi <leoanto@xxxxxxxx> > > > Signed-off-by: Johan Hovold <johan@xxxxxxxxxx> > > > --- > > > the patch fix the problem > > Thanks for confirming. > > Next time, please keep the CC list intact when replying so that everyone > sees that you've tested it. Wonderful. Johan, thanks for the quick fix. netdev maintainers, mind if I take this fix through my tree to Linus this week, or can you all get it to him before -rc1 through the networking tree? thanks, greg k-h