Re: [patch 08/12] NLM: Fix a circular lock dependency in lockd

[Roel Kluin]

Greg KH wrote:

@@ -477,10 +479,15 @@ nlmsvc_testlock(struct svc_rqst *rqstp, 
 
 	if (block == NULL) {
 		struct file_lock *conf = kzalloc(sizeof(*conf), GFP_KERNEL);
+		struct nlm_host	*host;
 
 		if (conf == NULL)
 			return nlm_granted;
-		block = nlmsvc_create_block(rqstp, file, lock, cookie);
+		/* Create host handle for callback */
+		host = nlmsvc_lookup_host(rqstp, lock->caller, lock->len);
+		if (host == NULL)
+			return nlm_lck_denied_nolocks;
+		block = nlmsvc_create_block(rqstp, host, file, lock, cookie);
 		if (block == NULL) {
 			kfree(conf);
 			return nlm_granted;

To be frankly I don't know what this is about, but shouldn't conf be freed if host == NULL?
-
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