156c1e354a
When removing a plugin-insert that has a sidechain on a bus that is implicitly soloed the following happens: * Route::remove_processor() takes a WriterLock(_processor_lock) * The sidechain input is disconnected * Route::sidechain_change_handler() is called which calls * Route::input_change_handler() * Since the route is implicitly soloed, propagation is attempted which calls * Route::direct_feeds_according_to_reality() which takes ReaderLock(_processor_lock) Recursive locks, reader-lock after writer-lock don't cause a deadlock, releasing the reader-lock effectively also releases the writer-lock...
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