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authorKees Cook <[email protected]>2023-09-22 10:51:41 -0700
committerHelge Deller <[email protected]>2023-09-23 20:35:44 +0200
commite34872523ca56b6a3ed7a5b06febdc66b4f16e3c (patch)
treea020c037e2a99e9ab1e3adf915b6671035c0fbdf
parent053d7dcd3440fa953ef4ca08de8e0a33d23d3b29 (diff)
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 <[email protected]> Cc: [email protected] Cc: [email protected] Signed-off-by: Kees Cook <[email protected]> Signed-off-by: Helge Deller <[email protected]>
-rw-r--r--include/video/mmp_disp.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/video/mmp_disp.h b/include/video/mmp_disp.h
index 77252cb46361..a722dcbf5073 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);