tmp_ctx = ctx;
ctx = NULL;
cmm_barrier(); /* Clear ctx for signal handler. */
+ /*
+ * Wait for all pending call_rcu work to complete before tearing
+ * down data structures. call_rcu worker may be trying to
+ * perform lookups in those structures.
+ */
+ rcu_barrier();
lttng_consumer_destroy(tmp_ctx);
lttng_consumer_cleanup();