On Tue, Nov 5, 2019 at 9:28 AM Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote: > > The real issue is that the robust list could be circular by incident or > malice and there is no way for the kernel to figure that out. That would > prevent the task from exiting and make it iterate over the list until > doomsday, i.e. a nice unpriviledged DoS. Why can't the kernel use the standard tortoise-and-hare algorithm for detecting circular linked lists here? zw
