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commit8760675932upstream. 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 can easily meet a Kernel panic issue if connect a low-speed USB mouse with the max port of FE2.1 multi-tt hub (1a40:0201) on rk3288 platform. Fixes:9f9f09b048("usb: dwc2: host: Totally redo the microframe scheduler") Cc: <stable@vger.kernel.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Acked-by: Minas Harutyunyan hminas@synopsys.com> Signed-off-by: William Wu <william.wu@rock-chips.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.