11927 Log, or optionally panic, on zero-length kmem allocations
Reviewed by: Dan McDonald <danmcd@joyent.com>
Reviewed by: Jason King <jason.brian.king@gmail.com>

@@ -23,11 +23,13 @@
 /*
  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
-#pragma ident   "%Z%%M% %I%     %E% SMI"
+/*
+ * Copyright (c) 2015 Joyent, Inc.  All rights reserved.
+ */
 
 #include <sys/smbios_impl.h>
 #include <sys/cmn_err.h>
 #include <sys/varargs.h>
 #include <sys/systm.h>

@@ -41,17 +43,17 @@
 }
 
 void *
 smb_alloc(size_t len)
 {
-        return (kmem_alloc(len, KM_SLEEP));
+        return (len > 0 ? kmem_alloc(len, KM_SLEEP) : NULL);
 }
 
 void *
 smb_zalloc(size_t len)
 {
-        return (kmem_zalloc(len, KM_SLEEP));
+        return (len > 0 ? kmem_zalloc(len, KM_SLEEP) : NULL);
 }
 
 void
 smb_free(void *buf, size_t len)
 {