But there is no bug in slab. The bug is that spin_unlock() is
scheduling inside local_irq_disable().
> Code that relies on
> cli/sti for atomicity should be pretty rare and limited, there's 1 known
> case so far where it leads to bugs.
Are you implying that all code which does spin_unlock() inside
local_irq_disable() needs to be converted to use _raw_spin_unlock()?
If so then, umm, ugh. I hope that the debug check is working
for CONFIG_PREEMPT=n.
BTW, what is the situation with spin_unlock_irq[restore]()? Seems
that these will schedule inside local_irq_disable() quite a lot?
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