Messages in this thread | | | Subject | Re: 2.5.34-mm2 kernel BUG at sched.c:944! only with CONFIG_PREEMPT=y | From | Steven Cole <> | Date | 12 Sep 2002 13:46:45 -0600 |
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On Thu, 2002-09-12 at 08:14, Steven Cole wrote: > I got the following BUG at sched.c:944! with 2.5.34-mm2 and PREEMPT on. > This was repeatable. > > With no PREEMPT, 2.5.34-mm2 booted and is running fine. Some other > options used: SMP, HUGETLB_PAGE, HIGHPTE, HIGHMEM4G.
The above also occurred with no SMP.
I backed out Changeset 1.606 which did this in kernel/sched.c:
- if (unlikely(in_interrupt())) + if (unlikely(in_atomic()))
and 2.5.34-mm2 was able to boot with CONFIG_PREEMPT=y.
Obviously, this is not a fix of any kind, but shows that the scheduler may be being called with a preemption lock.
Steven
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