Re: [PATCH v2 0/6] kasan: add workqueue and timer stack for generic KASAN

2020-08-24 Thread Walter Wu
On Mon, 2020-08-24 at 13:50 +0200, Marco Elver wrote: > On Mon, 24 Aug 2020 at 10:07, 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 KASA

Re: [PATCH v2 0/6] kasan: add workqueue and timer stack for generic KASAN

2020-08-24 Thread Marco Elver
On Mon, 24 Aug 2020 at 10:07, 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 workqueu

[PATCH v2 0/6] kasan: add workqueue and timer stack for generic KASAN

2020-08-24 Thread Walter Wu
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 K