Jonathan, I've submitted the patch with runtime WARN() as you suggested: https://lore.kernel.org/linux-iio/20220531181457.26034-1-ddrokosov@xxxxxxxxxxxxxx/ On Sat, May 28, 2022 at 06:10:04PM +0100, Jonathan Cameron wrote: > > If this call order is wrong, the next iio_trigger_put() (from sysfs > > callback or "delete module" path) will dereference "default" module > > refcnt, which is incorrect behaviour. > > Hi Dmitry, > > Series applied to the fixes-togreg branch of iio.git and marked for stable. > > Do you think it's also worth adding a runtime warning in iio_trigger_get() > on !trig->owner so that we catch any cases of this introduced in the future? > -- Thank you, Dmitry