Ingo requested I keep my debug check for the preempt_count invariant. Requested-by: Ingo Molnar Signed-off-by: Peter Zijlstra (Intel) --- kernel/sched/core.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -2514,6 +2514,10 @@ static struct rq *finish_task_switch(str * * Also, see FORK_PREEMPT_COUNT. */ + if (unlikely(WARN_ONCE(preempt_count() != 2*PREEMPT_DISABLE_OFFSET, + "corrupted preempt_count: %s/%d/0x%x\n", + current->comm, current->pid, preempt_count()))) + preempt_count_set(FORK_PREEMPT_COUNT); rq->prev_mm = NULL; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/