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| author | Kees Cook <keescook@chromium.org> | 2023-09-22 10:51:37 -0700 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2023-09-23 20:35:14 +0200 |
| commit | 053d7dcd3440fa953ef4ca08de8e0a33d23d3b29 (patch) | |
| tree | 71ffb99d452e533351a8e19463c80540c2323bdb /drivers/video | |
| parent | ce9ecca0238b140b88f43859b211c9fdfd8e5b70 (diff) | |
| download | lwn-053d7dcd3440fa953ef4ca08de8e0a33d23d3b29.tar.gz lwn-053d7dcd3440fa953ef4ca08de8e0a33d23d3b29.zip | |
fbdev: mmp: Annotate struct mmphw_ctrl 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 mmphw_ctrl.
[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: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/fbdev/mmp/hw/mmp_ctrl.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/video/fbdev/mmp/hw/mmp_ctrl.h b/drivers/video/fbdev/mmp/hw/mmp_ctrl.h index 167585a889d3..719b99a9bc77 100644 --- a/drivers/video/fbdev/mmp/hw/mmp_ctrl.h +++ b/drivers/video/fbdev/mmp/hw/mmp_ctrl.h @@ -1406,7 +1406,7 @@ struct mmphw_ctrl { /*pathes*/ int path_num; - struct mmphw_path_plat path_plats[]; + struct mmphw_path_plat path_plats[] __counted_by(path_num); }; static inline int overlay_is_vid(struct mmp_overlay *overlay) |