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interconnect: Annotate struct icc_path with __counted_by

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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 icc_path.

[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci

Cc: Georgi Djakov <djakov@kernel.org>
Cc: linux-pm@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230817204144.never.605-kees@kernel.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
This commit is contained in:
Kees Cook
2023-08-17 13:41:47 -07:00
committed by Georgi Djakov
parent b1e0cdb0f6
commit 6f0c60f146
1 changed files with 1 additions and 1 deletions
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2
drivers/interconnect/internal.h
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@@ -38,7 +38,7 @@ struct icc_req {
struct icc_path { struct icc_path {
const char *name; const char *name;
size_t num_nodes; size_t num_nodes;
struct icc_req reqs[]; struct icc_req reqs[] __counted_by(num_nodes);
}; };
#endif #endif