From: Kees Cook Date: Fri, 22 Sep 2023 17:51:41 +0000 (-0700) Subject: fbdev: mmp: Annotate struct mmp_path with __counted_by X-Git-Tag: v6.6.7~1717^2~7 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e34872523ca56b6a3ed7a5b06febdc66b4f16e3c;p=platform%2Fkernel%2Flinux-starfive.git fbdev: mmp: Annotate struct mmp_path with __counted_by Prepare for the coming implementation by GCC and Clang of the __counted_by attribute. Flexible array members annotated with __counted_by can have their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions). As found with Coccinelle[1], add __counted_by for struct mmp_path. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Helge Deller Cc: linux-fbdev@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Signed-off-by: Kees Cook Signed-off-by: Helge Deller --- diff --git a/include/video/mmp_disp.h b/include/video/mmp_disp.h index 77252cb..a722dcb 100644 --- a/include/video/mmp_disp.h +++ b/include/video/mmp_disp.h @@ -231,7 +231,7 @@ struct mmp_path { /* layers */ int overlay_num; - struct mmp_overlay overlays[]; + struct mmp_overlay overlays[] __counted_by(overlay_num); }; extern struct mmp_path *mmp_get_path(const char *name);