On Thu, Jan 12, 2023 at 04:51:36PM -0500, Matthew Rosato wrote: > Yep, thanks. I will surround this bit of code with > > mutex_lock(&device->dev_set->lock); > .. > mutex_unlock(&device->dev_set->lock); Don't do it like that, copy the kvm out of the struct device to the stack and NULL it. Then do the put without holding any locks. Jason