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ACPI: PRM: Annotate struct prm_module_info 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 prm_module_info.

Link: https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci # [1]
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Kees Cook 2023-09-22 10:53:15 -07:00 committed by Rafael J. Wysocki
parent 8a749fd1a8
commit 2e89345764
1 changed files with 1 additions and 1 deletions
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drivers/acpi/prmt.c
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@ -69,7 +69,7 @@ struct prm_module_info {
bool updatable;
struct list_head module_list;
struct prm_handler_info handlers[];
struct prm_handler_info handlers[] __counted_by(handler_count);
};
static u64 efi_pa_va_lookup(u64 pa)