X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Flib%2Flttng-ctl%2Flttng-ctl.c;fp=src%2Flib%2Flttng-ctl%2Flttng-ctl.c;h=d8e2f1428df7fc27560b532c5b3c41ca478c60f8;hp=c8d60cddcaee5e5bd9e2323c680c5dc710104cfc;hb=de8218d45188782cd920e9871f759a54aee1b8cb;hpb=5e4f4898bca7f9520da9a450c476b6148ea7d49c

diff --git a/src/lib/lttng-ctl/lttng-ctl.c b/src/lib/lttng-ctl/lttng-ctl.c
index c8d60cddc..d8e2f1428 100644
--- a/src/lib/lttng-ctl/lttng-ctl.c
+++ b/src/lib/lttng-ctl/lttng-ctl.c
@@ -2744,6 +2744,9 @@ 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;