Fix: RCU unlock out of error path

[lttng-tools.git] / src / bin / lttng-sessiond / channel.c

diff --git a/src/bin/lttng-sessiond/channel.c b/src/bin/lttng-sessiond/channel.c
index 8b9adfba8370894050c5fd214c64c5282682fed8..ae53c672c6c2a5792ba981324f37097e7f596f6d 100644 (file)
--- a/src/bin/lttng-sessiond/channel.c
+++ b/src/bin/lttng-sessiond/channel.c
@@ -54,7 +54,8 @@ struct lttng_channel *channel_new_default_attr(int dom)
 
        switch (dom) {
        case LTTNG_DOMAIN_KERNEL:
-               chan->attr.subbuf_size = DEFAULT_KERNEL_CHANNEL_SUBBUF_SIZE;
+               chan->attr.subbuf_size =
+                       default_get_kernel_channel_subbuf_size();
                chan->attr.num_subbuf = DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM;
                chan->attr.output = DEFAULT_KERNEL_CHANNEL_OUTPUT;
                break;
@@ -64,7 +65,7 @@ struct lttng_channel *channel_new_default_attr(int dom)
        case LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN:
        case LTTNG_DOMAIN_UST_EXEC_NAME:
 #endif
-               chan->attr.subbuf_size = DEFAULT_UST_CHANNEL_SUBBUF_SIZE;
+               chan->attr.subbuf_size = default_get_ust_channel_subbuf_size();
                chan->attr.num_subbuf = DEFAULT_UST_CHANNEL_SUBBUF_NUM;
                chan->attr.output = DEFAULT_UST_CHANNEL_OUTPUT;
                break;
@@ -239,6 +240,11 @@ int channel_ust_create(struct ltt_ust_session *usess, int domain,
                attr = defattr;
        }
 
+       if (attr->attr.subbuf_size < DEFAULT_UST_CHANNEL_SUBBUF_SIZE) {
+               ret = LTTNG_ERR_INVALID;
+               goto error;
+       }
+
        /*
         * Validate UST buffer size and number of buffers: must both be
         * power of 2 and nonzero. We validate right here for UST,