X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fcommon%2Fconsumer.c;h=78b3f0799737139fc9067a601a39452e384b3e0e;hb=30d86f7d9b5b49d8e035e686b9d23c7bda805e11;hp=044a504cec512443039e15eac186df07e841f896;hpb=13886d2d433762b7cf54f8e812f747ec2829de57;p=lttng-tools.git

diff --git a/src/common/consumer.c b/src/common/consumer.c
index 044a504ce..78b3f0799 100644
--- a/src/common/consumer.c
+++ b/src/common/consumer.c
@@ -102,6 +102,7 @@ static void notify_channel_pipe(struct lttng_consumer_local_data *ctx,
 
 	msg.action = action;
 	msg.chan = chan;
+	msg.key = key;
 	do {
 		ret = write(ctx->consumer_channel_pipe[1], &msg, sizeof(msg));
 	} while (ret < 0 && errno == EINTR);
@@ -463,6 +464,13 @@ void consumer_del_stream(struct lttng_consumer_stream *stream,
 				PERROR("munmap");
 			}
 		}
+
+		if (stream->wait_fd >= 0) {
+			ret = close(stream->wait_fd);
+			if (ret) {
+				PERROR("close");
+			}
+		}
 		break;
 	case LTTNG_CONSUMER32_UST:
 	case LTTNG_CONSUMER64_UST:
@@ -899,7 +907,7 @@ int consumer_add_channel(struct lttng_consumer_channel *channel,
 		/* Channel already exist. Ignore the insertion */
 		ERR("Consumer add channel key %" PRIu64 " already exists!",
 			channel->key);
-		ret = -1;
+		ret = LTTNG_ERR_KERN_CHAN_EXIST;
 		goto end;
 	}
 
@@ -1876,6 +1884,13 @@ void consumer_del_metadata_stream(struct lttng_consumer_stream *stream,
 				PERROR("munmap metadata stream");
 			}
 		}
+
+		if (stream->wait_fd >= 0) {
+			ret = close(stream->wait_fd);
+			if (ret < 0) {
+				PERROR("close kernel metadata wait_fd");
+			}
+		}
 		break;
 	case LTTNG_CONSUMER32_UST:
 	case LTTNG_CONSUMER64_UST:
@@ -1945,6 +1960,13 @@ void consumer_del_metadata_stream(struct lttng_consumer_stream *stream,
 	}
 
 end:
+	/*
+	 * Nullify the stream reference so it is not used after deletion. The
+	 * consumer data lock MUST be acquired before being able to check for a
+	 * NULL pointer value.
+	 */
+	stream->chan->metadata_stream = NULL;
+
 	pthread_mutex_unlock(&stream->lock);
 	pthread_mutex_unlock(&consumer_data.lock);