X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fbin%2Flttng%2Fcommands%2Fenable_channels.c;h=c4bbc1170f30b17b5ed0935aa2348db43b8e986c;hb=1c3de747c6d5262ca06a9ff849385fa16751a84d;hp=18f8d020eef5089ef4309ec9608a3ebd5589fcd7;hpb=b9dfb1671626365019a72318fb131eb321244245;p=lttng-tools.git

diff --git a/src/bin/lttng/commands/enable_channels.c b/src/bin/lttng/commands/enable_channels.c
index 18f8d020e..c4bbc1170 100644
--- a/src/bin/lttng/commands/enable_channels.c
+++ b/src/bin/lttng/commands/enable_channels.c
@@ -356,6 +356,13 @@ int cmd_enable_channels(int argc, const char **argv)
 			order = get_count_order_u64(chan.attr.subbuf_size);
 			assert(order >= 0);
 			rounded_size = 1ULL << order;
+			if (rounded_size < chan.attr.subbuf_size) {
+				ERR("The subbuf size (%" PRIu64 ") is rounded and overflows!",
+						chan.attr.subbuf_size);
+				ret = CMD_ERROR;
+				goto end;
+			}
+
 			if (rounded_size != chan.attr.subbuf_size) {
 				WARN("The subbuf size (%" PRIu64 ") is rounded to the next power of 2 (%" PRIu64 ")",
 						chan.attr.subbuf_size, rounded_size);
@@ -385,6 +392,13 @@ int cmd_enable_channels(int argc, const char **argv)
 			order = get_count_order_u64(chan.attr.num_subbuf);
 			assert(order >= 0);
 			rounded_size = 1ULL << order;
+			if (rounded_size < chan.attr.num_subbuf) {
+				ERR("The number of subbuffers (%" PRIu64 ") is rounded and overflows!",
+						chan.attr.num_subbuf);
+				ret = CMD_ERROR;
+				goto end;
+			}
+
 			if (rounded_size != chan.attr.num_subbuf) {
 				WARN("The number of subbuffers (%" PRIu64 ") is rounded to the next power of 2 (%" PRIu64 ")",
 						chan.attr.num_subbuf, rounded_size);