Messages in this thread | | | Date | Fri, 22 Sep 2023 20:13:25 -0600 | Subject | Re: [PATCH 1/9] drm/amd/pm: Annotate struct smu10_voltage_dependency_table with __counted_by | From | "Gustavo A. R. Silva" <> |
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On 9/22/23 11:32, 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 smu10_voltage_dependency_table. > > [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci > > Cc: Evan Quan <evan.quan@amd.com> > Cc: Alex Deucher <alexander.deucher@amd.com> > Cc: "Christian König" <christian.koenig@amd.com> > Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com> > Cc: David Airlie <airlied@gmail.com> > Cc: Daniel Vetter <daniel@ffwll.ch> > Cc: Xiaojian Du <Xiaojian.Du@amd.com> > Cc: Huang Rui <ray.huang@amd.com> > Cc: Kevin Wang <kevin1.wang@amd.com> > Cc: amd-gfx@lists.freedesktop.org > Cc: dri-devel@lists.freedesktop.org > Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Thanks -- Gustavo
> --- > drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu10_hwmgr.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu10_hwmgr.h b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu10_hwmgr.h > index 808e0ecbe1f0..42adc2a3dcbc 100644 > --- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu10_hwmgr.h > +++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu10_hwmgr.h > @@ -192,7 +192,7 @@ struct smu10_clock_voltage_dependency_record { > > struct smu10_voltage_dependency_table { > uint32_t count; > - struct smu10_clock_voltage_dependency_record entries[]; > + struct smu10_clock_voltage_dependency_record entries[] __counted_by(count); > }; > > struct smu10_clock_voltage_information {
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