direct-io: Prevent NULL pointer access in submit_page_section

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / fs / direct-io.c

diff --git a/fs/direct-io.c b/fs/direct-io.c
index e17d919aa6d838407f24315223dd638c56499635..4007749a478eb3f296668fc671c5c36a157d01e9 100644 (file)
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -759,7 +759,8 @@ out:
         */
        if (sdio->boundary) {
                ret = dio_send_cur_page(dio, sdio, map_bh);
-               dio_bio_submit(dio, sdio);
+               if (sdio->bio)
+                       dio_bio_submit(dio, sdio);
                page_cache_release(sdio->cur_page);
                sdio->cur_page = NULL;
        }