4.4-stable review patch. If anyone has any objections, please let me know.
------------------ From: Peter Chen <peter.c...@nxp.com> commit c526c62d565ea5a5bba9433f28756079734f430d upstream. cdev->config is checked for null pointer at above code, so cdev->config might be null, fix it by adding null pointer check. Signed-off-by: Peter Chen <peter.c...@nxp.com> Signed-off-by: Felipe Balbi <felipe.ba...@linux.intel.com> Signed-off-by: Arnd Bergmann <a...@arndb.de> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- drivers/usb/gadget/composite.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1819,6 +1819,8 @@ unknown: break; case USB_RECIP_ENDPOINT: + if (!cdev->config) + break; endp = ((w_index & 0x80) >> 3) | (w_index & 0x0f); list_for_each_entry(f, &cdev->config->functions, list) { if (test_bit(endp, f->endpoints))