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 ;)
