Commit b92ad7af authored Jun 24, 2021 by Peter Zijlstra Committed by Greg Kroah-Hartman Nov 26, 2021

locking/lockdep: Avoid RCU-induced noinstr fail



[ Upstream commit ce0b9c805dd66d5e49fd53ec5415ae398f4c56e6 ]

vmlinux.o: warning: objtool: look_up_lock_class()+0xc7: call to rcu_read_lock_any_held() leaves .noinstr.text section

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210624095148.311980536@infradead.org


Signed-off-by: Sasha Levin <sashal@kernel.org>

parent 1874eb64

kernel/locking/lockdep.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -689,7 +689,7 @@ look_up_lock_class(const struct lockdep_map *lock, unsigned int subclass)
		if (DEBUG_LOCKS_WARN_ON(!irqs_disabled()))
		return NULL;

		hlist_for_each_entry_rcu(class, hash_head, hash_entry) {
		hlist_for_each_entry_rcu_notrace(class, hash_head, hash_entry) {
		if (class->key == key) {
		/*
		* Huh! same key, different name? Did someone trample