Re: rmmod xhci-pci leads to debugfs_remove_recursive NULL pointer dereference crash / OOPS

2018-02-17 Thread Greg KH
On Sat, Feb 17, 2018 at 03:04:15PM +0200, Yuri Shishenko wrote: > I have a USB 3.0 PCI-E card and a USB 3.0 hub which is connected to it. > This OOPS appears when unloading xhci-pci module. > It appears even if no USB devices are connected. > > [ 134.399016] BUG: unable to handle kernel NULL poin

rmmod xhci-pci leads to debugfs_remove_recursive NULL pointer dereference crash / OOPS

2018-02-17 Thread Yuri Shishenko
I have a USB 3.0 PCI-E card and a USB 3.0 hub which is connected to it. This OOPS appears when unloading xhci-pci module. It appears even if no USB devices are connected. [ 134.399016] BUG: unable to handle kernel NULL pointer dereference at 00a8 [ 134.399138] IP: down_write+0x12/0x3