Re: [PATCH v4 0/6] kasan: add workqueue and timer stack for generic KASAN

[Dmitry Vyukov]

On Wed, Sep 30, 2020 at 5:29 PM Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
>
> On Thu, Sep 24 2020 at 12:01, Walter Wu wrote:
> > Syzbot reports many UAF issues for workqueue or timer, see [1] and [2].
> > In some of these access/allocation happened in process_one_work(),
> > we see the free stack is useless in KASAN report, it doesn't help
> > programmers to solve UAF on workqueue. The same may stand for times.
> >
> > This patchset improves KASAN reports by making them to have workqueue
> > queueing stack and timer stack information. It is useful for programmers
> > to solve use-after-free or double-free memory issue.
> >
> > Generic KASAN also records the last two workqueue and timer stacks and
> > prints them in KASAN report. It is only suitable for generic KASAN.

Walter, did you mail v5?
Checking statuses of KASAN issues and this seems to be not in linux-next.

> > [1]https://groups.google.com/g/syzkaller-bugs/search?q=%22use-after-free%22+process_one_work
> > [2]https://groups.google.com/g/syzkaller-bugs/search?q=%22use-after-free%22%20expire_timers
>
> How are these links useful for people who do not have a gurgle account?

This is a public mailing list archive, so effectively the same way as
lore links ;)