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R. Silva" In-Reply-To: <20230817235859.49846-16-keescook@chromium.org> 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.infradead.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - embeddedor.com X-BWhitelist: no X-Source-IP: 187.162.21.192 X-Source-L: No X-Exim-ID: 1qWp0B-001BiV-3A X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: 187-162-21-192.static.axtel.net ([192.168.15.8]) [187.162.21.192]:60186 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: MS4xfLVd9hO2gJDeYVpLbu8vk/n7VPl+VoGKYGWx2xmjLE8cTa3Ih5Rd2DSX4B/vsvBjM2bcUO7gX3Rb6BifcZmGUU/cpyaS7uw9mpn0paLDLGTLag5MxyDG xuhJQ1nmcxRmhlEatOwtpym053sBQqJ486pQ4RTSCOX2kRmgre9DT0j5BkprVT5Wwk/FkhmdT5ijsr0sh0cRaMtzUGnVr+6dZFN519AdGFTnrNOuR75b4ZWF X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230817_202723_519306_E6DE8FB5 X-CRM114-Status: GOOD ( 13.82 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 8/17/23 17:58, 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 tegra_adma. > > [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci > > Cc: Vinod Koul > Cc: Laxman Dewangan > Cc: Jon Hunter > Cc: Thierry Reding > Cc: dmaengine@vger.kernel.org > Cc: linux-tegra@vger.kernel.org > Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva Thanks -- Gustavo > --- > drivers/dma/tegra210-adma.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/dma/tegra210-adma.c b/drivers/dma/tegra210-adma.c > index e557bada1510..cea33912a4c9 100644 > --- a/drivers/dma/tegra210-adma.c > +++ b/drivers/dma/tegra210-adma.c > @@ -162,7 +162,7 @@ struct tegra_adma { > const struct tegra_adma_chip_data *cdata; > > /* Last member of the structure */ > - struct tegra_adma_chan channels[]; > + struct tegra_adma_chan channels[] __counted_by(nr_channels); > }; > > static inline void tdma_write(struct tegra_adma *tdma, u32 reg, u32 val) _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel