From: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Date: Thu, 10 Feb 2011 21:11:02 +0000 (-0500)
Subject: type-serializer: check is cpu id is out of bound.
X-Git-Tag: v0.12~64
X-Git-Url: https://git.lttng.org/?p=ust.git;a=commitdiff_plain;h=93c2f02399d2c9fad48acfcea5f4f9ef508a9493

type-serializer: check is cpu id is out of bound.

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

diff --git a/libust/type-serializer.c b/libust/type-serializer.c
index 2c278df..dcaea1e 100644
--- a/libust/type-serializer.c
+++ b/libust/type-serializer.c
@@ -82,6 +82,14 @@ void _ltt_specialized_trace(const struct marker *mdata, void *probe_data,
 		if (!chan->active)
 			continue;
 
+		/* If a new cpu was plugged since the trace was started, we did
+		 * not add it to the trace, and therefore we write the event to
+		 * cpu 0.
+		 */
+		if(cpu >= chan->n_cpus) {
+			cpu = 0;
+		}
+
 		/* reserve space : header and data */
 		ret = ltt_reserve_slot(chan, trace, data_size, largest_align,
 				       cpu, &buf, &slot_size, &buf_offset, &tsc,