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| author | Kees Cook <keescook@chromium.org> | 2023-09-22 20:50:50 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2023-10-11 00:10:07 +0300 |
| commit | 59825951707eccf92782e109c04772d34fc07eb6 (patch) | |
| tree | 9f83acd6345ec3167acf7c1256438330a930a5ff /sound/soc/apple | |
| parent | 52fee5c9158000db607d734383fd862969782de5 (diff) | |
| download | linux-59825951707eccf92782e109c04772d34fc07eb6.tar.xz | |
ASoC: apple: mca: Annotate struct mca_data 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 mca_data.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Martin PoviĊĦer <povik+lin@cutebit.org>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Cc: asahi@lists.linux.dev
Cc: alsa-devel@alsa-project.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230922175050.work.819-kees@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/apple')
| -rw-r--r-- | sound/soc/apple/mca.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/soc/apple/mca.c b/sound/soc/apple/mca.c index 9f64a9e74c54..3780aca71076 100644 --- a/sound/soc/apple/mca.c +++ b/sound/soc/apple/mca.c @@ -161,7 +161,7 @@ struct mca_data { struct mutex port_mutex; int nclusters; - struct mca_cluster clusters[]; + struct mca_cluster clusters[] __counted_by(nclusters); }; static void mca_modify(struct mca_cluster *cl, int regoffset, u32 mask, u32 val) |