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R. Silva" In-Reply-To: <20230817235859.49846-10-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: 1qWoDL-000WJd-1n 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]:34254 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 300 X-Org: HG=hgshared;ORG=hostgator; X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= X-Local-Domain: yes X-CMAE-Envelope: MS4xfDfyWzwkZQBvZ2fhed6hr6Dja90MWZXrNn8X13APRlOad5OqAkO3USqT6Ad98znuRqZA3w0PlbeaSfvAMrKpZ972uK9+Mqc+C0p5okOGwO4D+3yyv4Yu uMur52RRkxyvke91n9Txh3dYbrAKCKXtqemIRR3xd52OPzx8GIcgdp+qqD0pBEXuMEcfZxzgUplPBVs7NIUDK+SVKqGVnT5XjFpg3KkpeFqRBa2qpzwxVsFG X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230817_182356_685968_C640A8C1 X-CRM114-Status: GOOD ( 13.38 ) 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 sprd_dma_dev. > > [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci > > Cc: Vinod Koul > Cc: Orson Zhai > Cc: Baolin Wang > Cc: Chunyan Zhang > Cc: dmaengine@vger.kernel.org > Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva Thanks -- Gustavo > --- > drivers/dma/sprd-dma.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/dma/sprd-dma.c b/drivers/dma/sprd-dma.c > index 168aa0bd73a0..07871dcc4593 100644 > --- a/drivers/dma/sprd-dma.c > +++ b/drivers/dma/sprd-dma.c > @@ -212,7 +212,7 @@ struct sprd_dma_dev { > struct clk *ashb_clk; > int irq; > u32 total_chns; > - struct sprd_dma_chn channels[]; > + struct sprd_dma_chn channels[] __counted_by(total_chns); > }; > > static void sprd_dma_free_desc(struct virt_dma_desc *vd); _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel