From: Arnd Bergmann arnd@arndb.de
commit 7ba594d700998bafa96a75360d2e060aa39156d2 upstream.
USB support can be in a loadable module, and this causes a link failure with KMSAN:
ERROR: modpost: "kmsan_handle_urb" [drivers/usb/core/usbcore.ko] undefined!
Export the symbol so it can be used by this module.
Link: https://lkml.kernel.org/r/20221215162710.3802378-1-arnd@kernel.org Fixes: 553a80188a5d ("kmsan: handle memory sent to/from USB") Signed-off-by: Arnd Bergmann arnd@arndb.de Reviewed-by: Alexander Potapenko glider@google.com Cc: Dmitry Vyukov dvyukov@google.com Cc: Marco Elver elver@google.com Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- mm/kmsan/hooks.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/mm/kmsan/hooks.c b/mm/kmsan/hooks.c index 35f6b6e6a908..3807502766a3 100644 --- a/mm/kmsan/hooks.c +++ b/mm/kmsan/hooks.c @@ -260,6 +260,7 @@ void kmsan_handle_urb(const struct urb *urb, bool is_out) urb->transfer_buffer_length, /*checked*/ false); } +EXPORT_SYMBOL_GPL(kmsan_handle_urb);
static void kmsan_handle_dma_page(const void *addr, size_t size, enum dma_data_direction dir)