On Fri, Jun 12, 2020 at 11:56:04AM +0200, Wolfram Sang wrote: > On Fri, Jun 12, 2020 at 11:29:41AM +0200, Krzysztof Kozlowski wrote: > > On Fri, Jun 12, 2020 at 11:05:17AM +0200, Wolfram Sang wrote: > > > On Wed, Jun 10, 2020 at 03:46:42PM +0200, Krzysztof Kozlowski wrote: > > > > If interrupt comes early (could be triggered with CONFIG_DEBUG_SHIRQ), > > > > > > That code is disabled since 2011 (6d83f94db95c ("genirq: Disable the > > > SHIRQ_DEBUG call in request_threaded_irq for now"))? So, you had this > > > without fake injection, I assume? > > > > No, I observed it only after enabling DEBUG_SHIRQ (to a kernel with > > some debugging options already). > > Interesting. Maybe probe was deferred and you got the extra irq when > deregistering? Yes, good catch. The abort happens right after deferred probe exit. It could be then different reason than I thought - the interrupt is freed through devm infrastructure quite late. At this time, the clock might be indeed disabled (error path of probe()). Best regards, Krzysztof