lockdep: suggest the fix for "lockdep bfs error:-1" on print_bfs_bug

JIRA: https://issues.redhat.com/browse/RHEL-79880

commit 7886a61
Author: Luis Claudio R. Goncalves <lgoncalv@redhat.com>
Date:   Tue Jul 30 14:45:47 2024 -0300

	When lockdep fails while performing the Breadth-first-search operation
	due to lack of memory, hint that increasing the value of the config
	switch LOCKDEP_CIRCULAR_QUEUE_BITS should fix the warning.

	Preface the scary backtrace with the suggestion:

	    [  163.849242] Increase LOCKDEP_CIRCULAR_QUEUE_BITS to avoid this warning:
	    [  163.849248] ------------[ cut here ]------------
	    [  163.849250] lockdep bfs error:-1
	    [  163.849263] WARNING: CPU: 24 PID: 2454 at kernel/locking/lockdep.c:2091 print_bfs_bug+0x27/0x40
	    ...

	Signed-off-by: Luis Claudio R. Goncalves <lgoncalv@redhat.com>
	Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
	Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
	Reviewed-by: Waiman Long <longman@redhat.com>
	Link: https://lkml.kernel.org/r/Zqkmy0lS-9Sw0M9j@uudg.org

Signed-off-by: Čestmír Kalina <ckalina@redhat.com>

Author: ckalina

kernel/locking/lockdep.c

@@ -2086,6 +2086,9 @@ static noinline void print_bfs_bug(int ret)
 	/*
 	 * Breadth-first-search failed, graph got corrupted?
 	 */
+	if (ret == BFS_EQUEUEFULL)
+		pr_warn("Increase LOCKDEP_CIRCULAR_QUEUE_BITS to avoid this warning:\n");
+
 	WARN(1, "lockdep bfs error:%d\n", ret);
 }