Re: KASAN: null-ptr-deref Read in css_task_iter_advance

From: Tejun Heo
Date: Mon Jun 10 2019 - 14:23:33 EST

Hello, Hillf.

On Tue, Jun 11, 2019 at 12:59:23AM +0800, Hillf Danton wrote:
> >syzbot will keep track of this bug report. See:
> > for how to communicate with syzbot.
> >
> Ignore my noise if you have no interest seeing the syzbot report.

They're awesome.

> The following tiny diff, made in the hope that it may help you perhaps
> reproduce the crash, waits css lock holders and then pick task off
> the list of dying tasks.

I already posted a fix. Well, at least I think it's the fix.