X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=liblttng-ust-ctl%2Fustctl.c;h=ea5ab9dc4ed3ce29cd3dad50b1cc16c4bc32167a;hb=6a359b8a4006;hp=914ce94ea024c5ace40dccf405cbb5b80ed192be;hpb=218deb69baab57ee2f6728eef18e84697f21197b;p=lttng-ust.git

diff --git a/liblttng-ust-ctl/ustctl.c b/liblttng-ust-ctl/ustctl.c
index 914ce94e..ea5ab9dc 100644
--- a/liblttng-ust-ctl/ustctl.c
+++ b/liblttng-ust-ctl/ustctl.c
@@ -1854,7 +1854,8 @@ int ustctl_recv_reg_msg(int sock,
 	*uint64_t_alignment = reg_msg.uint64_t_alignment;
 	*long_alignment = reg_msg.long_alignment;
 	memcpy(name, reg_msg.name, LTTNG_UST_ABI_PROCNAME_LEN);
-	if (reg_msg.major != LTTNG_UST_ABI_MAJOR_VERSION) {
+	if (reg_msg.major < LTTNG_UST_ABI_MAJOR_VERSION_OLDEST_COMPATIBLE ||
+			reg_msg.major > LTTNG_UST_ABI_MAJOR_VERSION) {
 		return -LTTNG_UST_ERR_UNSUP_MAJOR;
 	}