On Wed, 4 May 2016, Petr Mladek wrote: > > + > > + if (unlikely(klp_patch_pending(current))) > > + klp_patch_task(current); > > } > > Some more ideas from the world of crazy races. I was shaking my head > if this was safe or not. > > The problem might be if the task get rescheduled between the check > for the pending stuff The code in question is running with preemption disabled. > or inside the klp_patch_task() function. We must make sure that this function doesn't go to sleep. It's only used to clear the task_struct flag anyway. -- Jiri Kosina SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe live-patching" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
