Re: [PATCH] usb: dwc2: fix the incorrect bitmaps for the ports of multi_tt hub

Hi, On Mon, May 21, 2018 at 3:12 AM, William Wu wrote: > The dwc2_get_ls_map() use ttport to reference into the > bitmap if we're on a multi_tt hub. But the bitmaps index > from 0 to (hub->maxchild - 1), while the ttport index from > 1 to hub->maxchild. This will cause

[PATCH] usb: dwc2: fix the incorrect bitmaps for the ports of multi_tt hub

The dwc2_get_ls_map() use ttport to reference into the bitmap if we're on a multi_tt hub. But the bitmaps index from 0 to (hub->maxchild - 1), while the ttport index from 1 to hub->maxchild. This will cause invalid memory access when the number of ttport is hub->maxchild. Without this patch, I