On Thu, 5 Jun 2014, Steven Rostedt wrote: > On Wed, 4 Jun 2014 17:32:37 +0200 (CEST) > Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote: > + /* > + * When we dropped the spinlocks, if the owner of the lock we > + * are currently processing changed since we chain walked > + * to that lock, we are done with the chain walk. The previous > + * owner was obviously running to release it. > + */ > + if (lock && rt_mutex_owner(lock) != task) > + goto out_unlock_pi; NO. You CANNOT derefernce lock after dropping the locks. It might be gone already. Thanks, tglx -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html