From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Wed, 29 Aug 2018 21:25:04 +0000 (-0400)
Subject: Fix: unchecked access to pids array
X-Git-Tag: v2.9.11~35
X-Git-Url: http://git.liburcu.org/?p=lttng-tools.git;a=commitdiff_plain;h=19cc51bb4636229e3bd6b9de1156d84bf7664067

Fix: unchecked access to pids array

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
---

diff --git a/src/lib/lttng-ctl/lttng-ctl.c b/src/lib/lttng-ctl/lttng-ctl.c
index 8afa6a820..870813901 100644
--- a/src/lib/lttng-ctl/lttng-ctl.c
+++ b/src/lib/lttng-ctl/lttng-ctl.c
@@ -2355,6 +2355,9 @@ int lttng_list_tracker_pids(struct lttng_handle *handle,
 		return ret;
 	}
 	nr_pids = ret / sizeof(int32_t);
+	if (nr_pids > 0 && !pids) {
+		return -LTTNG_ERR_UNK;
+	}
 	if (nr_pids == 1 && pids[0] == -1) {
 		free(pids);
 		pids = NULL;