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R. Silva" In-Reply-To: <20230817235859.49846-5-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: 1qWoC7-000UKR-1f 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]:32874 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 90 X-Org: HG=hgshared;ORG=hostgator; X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= X-Local-Domain: yes X-CMAE-Envelope: MS4xfOGPrXmgBN9oTK4wRQdjm1gil5o85+HWIXn/UL2M7aZbm1wlrE9IbklRMK7e8AEWerpt031lsDgIxfdCUq1ShLTUf8h43s9ynhIQYrpjGuY3qsyoryQE k3AP3nPnd7hdD2k1wL7f9cJCRylSvQrL1I14hymuvY0KsxU6YMHqeTRX6ygpdfi4yNjklvx3tVHDgIlFOz6I3Y3a4qNdDuSgHXcoYHrZ824GUVLVpD+3P1Pq X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230817_182238_377744_9B4B5E07 X-CRM114-Status: GOOD ( 13.33 ) 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 hisi_dma_dev. > > [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci > > Cc: Vinod Koul > Cc: Zhou Wang > Cc: Jie Hai > Cc: dmaengine@vger.kernel.org > Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva Thanks -- Gustavo > --- > drivers/dma/hisi_dma.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/dma/hisi_dma.c b/drivers/dma/hisi_dma.c > index c1350a36fddd..4c47bff81064 100644 > --- a/drivers/dma/hisi_dma.c > +++ b/drivers/dma/hisi_dma.c > @@ -163,7 +163,7 @@ struct hisi_dma_dev { > u32 chan_depth; > enum hisi_dma_reg_layout reg_layout; > void __iomem *queue_base; /* queue region start of register */ > - struct hisi_dma_chan chan[]; > + struct hisi_dma_chan chan[] __counted_by(chan_num); > }; > > #ifdef CONFIG_DEBUG_FS _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel