Re: [RFC PATCH] usb: hub: Disable autosuspend before disabling usb device

2017-03-17 Thread Guenter Roeck
On Fri, Mar 17, 2017 at 04:07:14PM -0400, Alan Stern wrote: > On Fri, 17 Mar 2017, Guenter Roeck wrote: > > > While running a bind/unbind stress test with the dwc3 usb driver on rk3399, > > the following crash was observed. > > > > Unable to handle kernel NULL pointer dereference at virtual addre

Re: [RFC PATCH] usb: hub: Disable autosuspend before disabling usb device

2017-03-17 Thread Alan Stern
On Fri, 17 Mar 2017, Guenter Roeck wrote: > While running a bind/unbind stress test with the dwc3 usb driver on rk3399, > the following crash was observed. > > Unable to handle kernel NULL pointer dereference at virtual address 0218 > pgd = ffc00165f000 > [0218] *pgd=0174f003,

[RFC PATCH] usb: hub: Disable autosuspend before disabling usb device

2017-03-17 Thread Guenter Roeck
While running a bind/unbind stress test with the dwc3 usb driver on rk3399, the following crash was observed. Unable to handle kernel NULL pointer dereference at virtual address 0218 pgd = ffc00165f000 [0218] *pgd=0174f003, *pud=0174f003,