| Message ID | 20230922175341.work.919-kees@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Daniel Lezcano |
| Headers | show |
| Series | drivers: thermal: tsens: Annotate struct tsens_priv with __counted_by | expand |
On 9/22/23 11:53, Kees Cook wrote: > 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 tsens_priv. > > [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: Amit Kucheria <amitk@kernel.org> > Cc: Thara Gopinath <thara.gopinath@gmail.com> > Cc: "Rafael J. Wysocki" <rafael@kernel.org> > Cc: Daniel Lezcano <daniel.lezcano@linaro.org> > Cc: Zhang Rui <rui.zhang@intel.com> > Cc: linux-arm-msm@vger.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> Thanks
On Fri, 22 Sep 2023 10:53:41 -0700, Kees Cook wrote: > 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 tsens_priv. > > [...] Since this is a trivial change and it's been 2 week without further discussion, I'll snag this patch. Applied to for-next/hardening, thanks! [1/1] drivers: thermal: tsens: Annotate struct tsens_priv with __counted_by https://git.kernel.org/kees/c/aa0a14629c2d Take care,
diff --git a/drivers/thermal/qcom/tsens.h b/drivers/thermal/qcom/tsens.h index 2805de1c6827..cb637fa289ca 100644 --- a/drivers/thermal/qcom/tsens.h +++ b/drivers/thermal/qcom/tsens.h @@ -585,7 +585,7 @@ struct tsens_priv { struct dentry *debug_root; struct dentry *debug; - struct tsens_sensor sensor[]; + struct tsens_sensor sensor[] __counted_by(num_sensors); }; /**
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 tsens_priv. [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: Amit Kucheria <amitk@kernel.org> Cc: Thara Gopinath <thara.gopinath@gmail.com> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Zhang Rui <rui.zhang@intel.com> Cc: linux-arm-msm@vger.kernel.org Cc: linux-pm@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> --- drivers/thermal/qcom/tsens.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)