From: Kees Cook <keescook@chromium.org>
To: Support Opensource <support.opensource@diasemi.com>
Cc: Kees Cook <keescook@chromium.org>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Tom Rix <trix@redhat.com>,
linux-kernel@vger.kernel.org, llvm@lists.linux.dev,
linux-hardening@vger.kernel.org
Subject: [PATCH] regulator: da9062: Annotate struct da9062_regulators with __counted_by
Date: Fri, 22 Sep 2023 10:53:31 -0700 [thread overview]
Message-ID: <20230922175330.work.066-kees@kernel.org> (raw)
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 da9062_regulators.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Support Opensource <support.opensource@diasemi.com>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
---
drivers/regulator/da9062-regulator.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/regulator/da9062-regulator.c b/drivers/regulator/da9062-regulator.c
index 1d354db0c1bd..e0c96f10e570 100644
--- a/drivers/regulator/da9062-regulator.c
+++ b/drivers/regulator/da9062-regulator.c
@@ -73,7 +73,7 @@ struct da9062_regulators {
int irq_ldo_lim;
unsigned n_regulators;
/* Array size to be defined during init. Keep at end. */
- struct da9062_regulator regulator[];
+ struct da9062_regulator regulator[] __counted_by(n_regulators);
};
/* Regulator operations */
--
2.34.1
next reply other threads:[~2023-09-22 17:57 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-22 17:53 Kees Cook [this message]
2023-09-23 16:36 ` [PATCH] regulator: da9062: Annotate struct da9062_regulators with __counted_by Gustavo A. R. Silva
2023-10-09 17:29 ` Mark Brown
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