On Tue, 2020-12-01 at 15:02 +0100, 'Dmitry Vyukov' via kasan-dev wrote:
> On Tue, Dec 1, 2020 at 12:17 PM Walter Wu wrote:
> >
> > Hi Dmitry,
> >
> > On Tue, 2020-12-01 at 08:59 +0100, 'Dmitry Vyukov' via kasan-dev wrote:
> > > On Wed, Sep 30, 2020 at 5:29 PM Thomas Gleixner
> > > wrote:
> > >
On Tue, Dec 1, 2020 at 3:13 PM Thomas Gleixner 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
> >> >
On Tue, Dec 01 2020 at 08:59, Dmitry Vyukov wrote:
> On Wed, Sep 30, 2020 at 5:29 PM Thomas Gleixner 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
On Tue, Dec 1, 2020 at 12:17 PM Walter Wu wrote:
>
> Hi Dmitry,
>
> On Tue, 2020-12-01 at 08:59 +0100, 'Dmitry Vyukov' via kasan-dev wrote:
> > On Wed, Sep 30, 2020 at 5:29 PM Thomas Gleixner wrote:
> > >
> > > On Thu, Sep 24 2020 at 12:01, Walter Wu wrote:
> > > > Syzbot reports many UAF issues
Hi Dmitry,
On Tue, 2020-12-01 at 08:59 +0100, 'Dmitry Vyukov' via kasan-dev wrote:
> On Wed, Sep 30, 2020 at 5:29 PM Thomas Gleixner 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
On Wed, Sep 30, 2020 at 5:29 PM Thomas Gleixner 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
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.
On Thu, 2020-09-24 at 13:51 +0200, 'Alexander Potapenko' via kasan-dev
wrote:
> > ---
> > Documentation/dev-tools/kasan.rst | 5 +++--
> > kernel/time/timer.c | 3 +++
> > kernel/workqueue.c| 3 +++
> > lib/test_kasan_module.c | 55
> >
> ---
> Documentation/dev-tools/kasan.rst | 5 +++--
> kernel/time/timer.c | 3 +++
> kernel/workqueue.c| 3 +++
> lib/test_kasan_module.c | 55
> +++
> mm/kasan/report.c | 4 ++--
> 5 files
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
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