Simple WARN_ON to catch any underflow in rcu_read_lock_nesting. Signed-off-by: Daniel Walker <[email protected]> --- kernel/rcupreempt.c | 6 ++++++ 1 file changed, 6 insertions(+) Index: linux-2.6.22/kernel/rcupreempt.c =================================================================== --- linux-2.6.22.orig/kernel/rcupreempt.c +++ linux-2.6.22/kernel/rcupreempt.c @@ -157,6 +157,12 @@ void __rcu_read_unlock(void) } local_irq_restore(oldirq); + + /* + * If our rcu_read_lock_nesting went negative, likely + * something is wrong.. + */ + WARN_ON(current->rcu_read_lock_nesting < 0); } static void __rcu_advance_callbacks(void) -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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