Re: tty: sleeping function in invalid in context do_con_write and deadlock in gsm_control_retransmit

From: One Thousand Gnomes
Date: Mon Sep 05 2016 - 08:35:06 EST


On Sat, 3 Sep 2016 13:07:27 +0200
Dmitry Vyukov <dvyukov@xxxxxxxxxx> wrote:

> Hello,
>
> While running syzkaller fuzzer on
> 0f98f121e1670eaa2a2fbb675e07d6ba7f0e146f of linux-next, I've for the
> following splash. Note there are 2 separate bugs (but maybe related):
>

There are a couple of known cases where strange ldiscs plus console
breaks because the console locking is still completely fubar. The gsm one
is known.

Alan