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R. Silva" In-Reply-To: <20230922173216.3823169-4-keescook@chromium.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator4166.hostgator.com X-AntiAbuse: Original Domain - lists.freedesktop.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - embeddedor.com X-BWhitelist: no X-Source-IP: 94.239.20.48 X-Source-L: No X-Exim-ID: 1qjkfx-000PVa-1n X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: ([192.168.1.98]) [94.239.20.48]:43798 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 0 X-Org: HG=hgshared;ORG=hostgator; X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= X-Local-Domain: yes X-CMAE-Envelope: MS4xfPyUJAjXOAA9VU8QimzoFGWt+Jwe/XgwOunYd7S+fJd+ogfjscifNL1zGc1fDH0bgMJbWTuoJrWNrWn1RrfnJ6P1DFgHXw8qH++6HTbFSheZq31lLerO YDj1vpFxdbzKlPFHqssmxQ4CWiW0ijlFfKn4ZILehYsbu6i9s+bKi1RvFqPe44DBex5uhg/KqKHX/nKc4ZZo8c6GDKLXFo4F3GDGSS3IgZSGOzkNmPDcZBrH l6L0cOGfBBasTN0KwQ02QQjSk+f2n5VKmf5O9KRGuY37b7wdezHahd6gGS60Cfhk1q6Cezizg/cMfWlwb/+i6+VKGNx+CiI0vPpfYteVXi/q5R1a5EhmO53C ITs8wrButGZ3QAFCpoLiJt+JT0VdBx1wLvzxF4rm4pSMr8QRya4= Subject: Re: [Intel-gfx] [PATCH 4/9] drm/msm/dpu: Annotate struct dpu_hw_intr with __counted_by X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Emma Anholt , Tom Rix , llvm@lists.linux.dev, dri-devel@lists.freedesktop.org, Chris Wilson , Prike Liang , Huang Rui , Gerd Hoffmann , Andrzej Hajda , Marijn Suijten , Karol Herbst , Neil Armstrong , amd-gfx@lists.freedesktop.org, Kuogee Hsieh , Nathan Chancellor , VMware Graphics Reviewers , Ben Skeggs , nouveau@lists.freedesktop.org, David Airlie , virtualization@lists.linux-foundation.org, Chia-I Wu , linux-hardening@vger.kernel.org, Lijo Lazar , Yifan Zhang , linux-arm-msm@vger.kernel.org, intel-gfx@lists.freedesktop.org, Kevin Wang , Abhinav Kumar , Melissa Wen , Dmitry Baryshkov , Gurchetan Singh , Maxime Ripard , Rodrigo Vivi , Evan Quan , Xiaojian Du , Le Ma , Lang Yu , Bjorn Andersson , "Pan, Xinhui" , Nick Desaulniers , linux-kernel@vger.kernel.org, Zack Rusin , Daniel Vetter , Alex Deucher , Nirmoy Das , freedreno@lists.freedesktop.org, =?UTF-8?Q?Christian_K=c3=b6nig?= , Hawking Zhang Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 dpu_hw_intr. > > [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci > > Cc: Rob Clark > Cc: Abhinav Kumar > Cc: Dmitry Baryshkov > Cc: Sean Paul > Cc: Marijn Suijten > Cc: David Airlie > Cc: Daniel Vetter > Cc: Bjorn Andersson > Cc: linux-arm-msm@vger.kernel.org > Cc: dri-devel@lists.freedesktop.org > Cc: freedreno@lists.freedesktop.org > Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva Thanks -- Gustavo > --- > drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h > index dab761e54863..50cf9523d367 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h > @@ -61,7 +61,7 @@ struct dpu_hw_intr { > void (*cb)(void *arg, int irq_idx); > void *arg; > atomic_t count; > - } irq_tbl[]; > + } irq_tbl[] __counted_by(total_irqs); > }; > > /**