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>

*** 3915,3924 ****
--- 3915,3926 ----
                          return (DCMD_USAGE);
                  if (strcmp(argv->a_un.a_str, "fail") == 0)
                          logname = "kmem_failure_log";
                  else if (strcmp(argv->a_un.a_str, "slab") == 0)
                          logname = "kmem_slab_log";
+                 else if (strcmp(argv->a_un.a_str, "zerosized") == 0)
+                         logname = "kmem_zerosized_log";
                  else
                          return (DCMD_USAGE);
          }
  
          if (mdb_readvar(&addr, logname) == -1) {