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Commit 8bfe0298 authored by Rabin Vincent's avatar Rabin Vincent Committed by Ingo Molnar
Browse files

lockdep: handle chains involving classes defined in modules 



Solve this by marking the classes as unused and not printing information
about the unused classes.

Reported-by: default avatarEric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: default avatarRabin Vincent <rabin@rab.in>
Acked-by: default avatarHuang Ying <ying.huang@intel.com>
Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 7cd5a02f

kernel/lockdep.c

+1 −0
Original line number Diff line number Diff line
@@ -3176,6 +3176,7 @@ static void zap_class(struct lock_class *class) 
	list_del_rcu(&class->hash_entry);

	list_del_rcu(&class->lock_entry);



	class->key = NULL;

}



static inline int within(const void *addr, void *start, unsigned long size)

kernel/lockdep_proc.c

+3 −0
Original line number Diff line number Diff line
@@ -201,6 +201,9 @@ static int lc_show(struct seq_file *m, void *v) 


	for (i = 0; i < chain->depth; i++) {

		class = lock_chain_get_class(chain, i);

		if (!class->key)

			continue;



		seq_printf(m, "[%p] ", class->key);

		print_name(m, class);

		seq_puts(m, "\n");