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-rw-r--r--src/core/lib/surface/call.cc5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/core/lib/surface/call.cc b/src/core/lib/surface/call.cc
index dbad5ded4d..52053e686b 100644
--- a/src/core/lib/surface/call.cc
+++ b/src/core/lib/surface/call.cc
@@ -613,8 +613,11 @@ void grpc_call_unref(grpc_call* c) {
// Unset the call combiner cancellation closure. This has the
// effect of scheduling the previously set cancellation closure, if
// any, so that it can release any internal references it may be
- // holding to the call stack.
+ // holding to the call stack. Also flush the closures on exec_ctx so that
+ // filters that schedule cancel notification closures on exec_ctx do not
+ // need to take a ref of the call stack to guarantee closure liveness.
grpc_call_combiner_set_notify_on_cancel(&c->call_combiner, nullptr);
+ grpc_core::ExecCtx::Get()->Flush();
}
GRPC_CALL_INTERNAL_UNREF(c, "destroy");
}