On Mon, Sep 24, 2018 at 2:06 PM, Kirill Tkhai <ktkhai@xxxxxxxxxxxxx> wrote: > Fix from my previous message makes the use-after-free does not reproduce > with the reproducer in my setup. Excellent. > > I can prepare the patch, but before this some comments from Miklos would > be welcome. > > Miklos, what you think about this? I like the patch. We could optimize away the get/put by moving the set_bit/test_bit part inside the fpq->lock-ed region and only get the refcount for the (unlikely) interrupted case. OTOH it's probably not worth the extra complexity, so let's stay with this simpler fix. Thanks, Miklos
