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| author | Kees Cook <keescook@chromium.org> | 2023-09-22 19:54:14 +0200 |
|---|---|---|
| committer | Bjorn Andersson <andersson@kernel.org> | 2023-09-28 01:08:31 +0200 |
| commit | 433ce46a97116f431ee114b4607143860aad4054 (patch) | |
| tree | 2b0404f67fe9e5bb352330ff0d499ebd767bce95 /drivers | |
| parent | soc: qcom: rmtfs: Support discarding guard pages (diff) | |
| download | linux-433ce46a97116f431ee114b4607143860aad4054.tar.xz linux-433ce46a97116f431ee114b4607143860aad4054.zip | |
soc: qcom: smem: Annotate struct qcom_smem 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 qcom_smem.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Andy Gross <agross@kernel.org>
Cc: Bjorn Andersson <andersson@kernel.org>
Cc: Konrad Dybcio <konrad.dybcio@linaro.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Tom Rix <trix@redhat.com>
Cc: linux-arm-msm@vger.kernel.org
Cc: llvm@lists.linux.dev
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230922175413.work.929-kees@kernel.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/soc/qcom/smem.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/soc/qcom/smem.c b/drivers/soc/qcom/smem.c index d4a89d2bb43b..4ce9cf1477ac 100644 --- a/drivers/soc/qcom/smem.c +++ b/drivers/soc/qcom/smem.c @@ -285,7 +285,7 @@ struct qcom_smem { struct smem_partition partitions[SMEM_HOST_COUNT]; unsigned num_regions; - struct smem_region regions[]; + struct smem_region regions[] __counted_by(num_regions); }; static void * |