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  1. Couchbase C client library libcouchbase
  2. CCBC-1194

segfault when doing diagnostics call

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Details

    • Bug
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 3.0.0
    • 3.0.6
    • library
    • None
    • 1

    Description

      When performing a lcb_diag call, the SDK occasionally will segfault. The underlying cause for this is not entirely clear as it is one of the last calls we perform, and having the call execute alone does not reproduce this issue. I have included a stack trace below.

      * thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x20)
      ...
      (lldb) f 0
      frame #0: 0x00000001052b06ce couchbase_impl.node`endpointToJSON(now=86485188759, node=0x00007ffeefbfdce0, host=<unavailable>, info=0x0000000102a179c0) at manager.cc:280 [opt]
         277 	    snprintf(id, sizeof(id), "%p", (void *)info->sock);
         278 	    endpoint["id"] = id;
         279 	    endpoint["remote"] = get_hehost(host);
      -> 280 	    endpoint["local"] = info->sock->info->ep_local;
         281 	    endpoint["last_activity_us"] = (Json::Value::UInt64)(now - info->sock->atime);
         282 	    endpoint["status"] = "connected";
         283 	    node[lcbio_svcstr(info->sock->service)].append(endpoint);
      (lldb) f 1
      frame #1: 0x00000001052b057f couchbase_impl.node`lcb::io::Pool::toJSON(this=<unavailable>, now=86485188759, node=<unavailable>) at manager.cc:298 [opt]
         295 	        }
         296 	        LCB_LIST_FOR(llcur, (lcb_list_t *)&host->ll_pending)
         297 	        {
      -> 298 	            endpointToJSON(now, node, host, PoolConnInfo::from_llnode(llcur));
         299 	        }
         300 	    }
         301 	}
      (lldb) f 2
      frame #2: 0x00000001052d54ab couchbase_impl.node`::lcb_diag(instance=<unavailable>, cookie=0x0000000102d54470, cmd=0x0000000102d2e020) at ping.cc:694 [opt]
         691 	        }
         692 	    }
         693 	    instance->memd_sockpool->toJSON(now, root);
      -> 694 	    instance->http_sockpool->toJSON(now, root);
         695 	    {
         696 	        Json::Value cur;
         697 	        lcb_ASPEND_SETTYPE::iterator it;
      

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        Activity

          Build couchbase-server-7.0.0-4433 contains libcouchbase commit a1d2bd2 with commit message:
          CCBC-1194: extra checks for socket state in lcb_diag

          build-team Couchbase Build Team added a comment - Build couchbase-server-7.0.0-4433 contains libcouchbase commit a1d2bd2 with commit message: CCBC-1194 : extra checks for socket state in lcb_diag

          People

            avsej Sergey Avseyev
            brett19 Brett Lawson
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            Dates

              Created:
              Updated:
              Resolved:

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