On Mon, May 18, 2020 at 2:16 AM Cong Wang <xiyou.wangcong@xxxxxxxxx> wrote: > > On Sat, May 16, 2020 at 9:16 AM Subhashini Rao Beerisetty > <subhashbeerisetty@xxxxxxxxx> wrote: > > Yes, those are out-of-tree modules. Basically, my question is, in > > general what is the difference between 'general protection fault' and > > 'Oops' failure in kernel mode. > > For your case, they are likely just different consequences of a same > memory error. Let's assume it is a use-after-free, the behavior is UAF > is undefined: If that memory freed by kernel is also unmapped from > kernel address space, you would get a page fault when using it > afterward, that is an Oops. Or if that memory freed by kernel gets > reallocated and remapped as read-only, you would get a general > protection error when you writing to it afterward. Cool, thanks for the clarification. _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
