From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Sat, 5 Nov 2011 18:56:56 +0000 (-0400)
Subject: Zero out callback pointers in consumer process
X-Git-Tag: v1.9.1~128
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=bbc70d1b2a7a366a17283194af813c239d9dd8c7;p=lttng-ust.git

Zero out callback pointers in consumer process

They cannot be used anyway.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/liblttng-ust-ctl/ustctl.c b/liblttng-ust-ctl/ustctl.c
index 2d915260..cd80faec 100644
--- a/liblttng-ust-ctl/ustctl.c
+++ b/liblttng-ust-ctl/ustctl.c
@@ -449,6 +449,12 @@ struct lttng_ust_shm_handle *ustctl_map_channel(struct lttng_ust_object_data *ch
 		return NULL;
 	}
 	memcpy(handle->shadow_chan, chan, chan_size);
+	/*
+	 * The callback pointers in the producer are invalid in the
+	 * consumer. Zero them out.
+	 */
+	memset(&handle->shadow_chan->backend.config.cb, 0,
+		sizeof(handle->shadow_chan->backend.config.cb));
 	return handle;
 }