Re: [PATCH v2] driver core: avoid klist_remove() on unattached knode_driver

[Nguyen Quang Le Kien]

Hi Greg,

v1 used klist_node_attached(&dev->p->knode_driver). v1 passed the syzbot
test, but after reviewing the code again I realized klist_node_attached()
isn't really the right check at that level -- it's a raw klist API.
device_is_bound() is what driver core uses to ask whether a device is
bound, and it also handles the NULL dev->p case. So I switched to that
in v2. Nothing else changed.

As for syzbot -- it's just where I find kernel bugs, and it can test my
patches for me. That's all.

Thanks,
Kien