Commit e3487252 authored by Kees Cook's avatar Kees Cook Committed by Helge Deller
Browse files

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 <deller@gmx.de>
Cc: linux-fbdev@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: default avatarKees Cook <keescook@chromium.org>
Signed-off-by: default avatarHelge Deller <deller@gmx.de>
parent 053d7dcd

include/video/mmp_disp.h

+1 −1
Original line number Diff line number Diff line
@@ -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);