On Thu, Oct 17, 2019 at 03:27:25PM +0530, Viresh Kumar wrote: > On 16-10-19, 15:23, Sudeep Holla wrote: > > Thanks for the spinning these patches so quickly. > > > > I did give it a spin, but unfortunately it doesn't fix the bug I reported. > > So I looked at my bug report in detail and looks like the cpufreq_driver > > variable is set to NULL at that point and it fails to dereference it > > while trying to execute: > > ret = cpufreq_driver->verify(new_policy); > > (Hint verify is at offset 0x1c/28) > > > > So I suspect some race as this platform with bL switcher tries to > > unregister and re-register the cpufreq driver during the boot. > > > > I need to spend more time on this as reverting the initial PM QoS patch > > to cpufreq.c makes the issue disappear. > > Is this easily reproducible ? cpufreq_driver == NULL shouldn't be the case, it > get updated only once while registering/unregistering cpufreq drivers. That is > the last thing which can go wrong from my point of view :) > Yes, if I boot my TC2 with bL switcher enabled, it always crashes on boot. -- Regards, Sudeep
