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rcu: Use WARN_ON_ONCE for DEBUG_OBJECTS_RCU_HEAD warnings
Avoid additional multiple-warning confusion in memory-corruption scenarios. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
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@ -147,12 +147,12 @@ static int rcuhead_fixup_init(void *addr, enum debug_obj_state state)
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* attempt any fixup and just print a warning.
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*/
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#ifndef CONFIG_PREEMPT
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WARN_ON(1);
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WARN_ON_ONCE(1);
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return 0;
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#endif
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if (rcu_preempt_depth() != 0 || preempt_count() != 0 ||
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irqs_disabled()) {
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WARN_ON(1);
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WARN_ON_ONCE(1);
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return 0;
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}
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rcu_barrier();
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@ -196,12 +196,12 @@ static int rcuhead_fixup_activate(void *addr, enum debug_obj_state state)
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* attempt any fixup and just print a warning.
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*/
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#ifndef CONFIG_PREEMPT
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WARN_ON(1);
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WARN_ON_ONCE(1);
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return 0;
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#endif
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if (rcu_preempt_depth() != 0 || preempt_count() != 0 ||
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irqs_disabled()) {
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WARN_ON(1);
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WARN_ON_ONCE(1);
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return 0;
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}
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rcu_barrier();
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@ -233,12 +233,12 @@ static int rcuhead_fixup_free(void *addr, enum debug_obj_state state)
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* attempt any fixup and just print a warning.
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*/
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#ifndef CONFIG_PREEMPT
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WARN_ON(1);
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WARN_ON_ONCE(1);
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return 0;
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#endif
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if (rcu_preempt_depth() != 0 || preempt_count() != 0 ||
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irqs_disabled()) {
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WARN_ON(1);
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WARN_ON_ONCE(1);
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return 0;
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}
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rcu_barrier();
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