2017-12-14 23:41 GMT+08:00 Bruno Wolff III <bruno@xxxxxxxx>: > On Thu, Dec 14, 2017 at 18:09:27 +0800, > weiping zhang <zhangweiping@xxxxxxxxxxxxxxx> wrote: >> >> >> It seems something wrong with bdi debugfs register, could you help >> test the forllowing debug patch, I add some debug log, no function >> change, thanks. > > > I applied your patch to d39a01eff9af1045f6e30ff9db40310517c4b45f and there > were some new debug messages in the dmesg output. Hopefully this helps. I > also added the patch and output to the Fedora bug for people following > there. Hi Bruno, Thanks your testing, but I cann't find WARN_ON in device_add_disk from this boot1.log, could you help reproduce that issue? And does this issue can be triggered at every bootup ? -- Thanks weiping