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Fix: add missing rcu_barrier before daemon teardown
[lttng-tools.git]
/
src
/
bin
/
lttng-consumerd
/
lttng-consumerd.c
diff --git
a/src/bin/lttng-consumerd/lttng-consumerd.c
b/src/bin/lttng-consumerd/lttng-consumerd.c
index 079bd60240ef2ac864a51e05c755423c78b9ddf0..293654053e87ad046d4cc2716de75e1934b513f8 100644
(file)
--- a/
src/bin/lttng-consumerd/lttng-consumerd.c
+++ b/
src/bin/lttng-consumerd/lttng-consumerd.c
@@
-628,6
+628,12
@@
exit_init_data:
tmp_ctx = ctx;
ctx = NULL;
cmm_barrier(); /* Clear ctx for signal handler. */
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();
lttng_consumer_destroy(tmp_ctx);
lttng_consumer_cleanup();
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