staging: lustre: libcfs: report hnode value for cfs_hash_putref

Add more debugging info.
Signed-off-by: Yang Sheng <yang.sheng@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-7084
Reviewed-on: http://review.whamcloud.com/17673Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Fan Yong <fan.yong@intel.com>
Reviewed-by: Mike Pershin <mike.pershin@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lnet/libcfs/hash.c

@@ -1215,7 +1215,7 @@ cfs_hash_find_or_add(struct cfs_hash *hs, const void *key,
 	struct cfs_hash_bd bds[2];
 	int bits = 0;
 
-	LASSERT(hlist_unhashed(hnode));
+	LASSERTF(hlist_unhashed(hnode), "hnode = %p\n", hnode);
 
 	cfs_hash_lock(hs, 0);
 	cfs_hash_dual_bd_get_and_lock(hs, key, bds, 1);