It is expected that _nesting == INT_MIN if _nesting < 0.
Add a warning to it if something unexpected happen.
Signed-off-by: Lai Jiangshan <la...@cn.fujitsu.com>
---
kernel/rcutree_plugin.h | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/kernel/rcutree_plugin.h b/kernel/rcutree_plugin.h
index 63098a5..8fd947e 100644
--- a/kernel/rcutree_plugin.h
+++ b/kernel/rcutree_plugin.h
@@ -243,6 +243,7 @@ static void rcu_preempt_note_context_switch(int cpu)
: rnp->gpnum + 1);
raw_spin_unlock_irqrestore(&rnp->lock, flags);
} else if (t->rcu_read_lock_nesting < 0 &&
+ !WARN_ON_ONCE(t->rcu_read_lock_nesting != INT_MIN) &&
t->rcu_read_unlock_special) {
/*
--
1.7.4.4
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