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R. Silva" In-Reply-To: <20230915201227.never.483-kees@kernel.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: 1qhFjF-002cqE-0c 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]:49250 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 331 X-Org: HG=hgshared;ORG=hostgator; X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= X-Local-Domain: yes X-CMAE-Envelope: MS4xfKf7s+ZIAwKxYc1Qi8CxBHu0RZv8yQij9BbqiKR1ipL8gmX4oLiAyPZQH492WrBpRtQJ0+bFWrqa2Iea3mRofpj9ZJVah70/kNrIYERCuJ/5ILYb+06J cB9t/RcYmT4HUhyVFOLEEsqN0PhUT/9JNw86uLDmtLx1zpM8RQwtCz20EwDdpLjKopjVDEIWUrDgwRSBI03qvsktA9KtfxnpRYTD0RYiwAnOOGCVmxFdUxKC X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230915_134759_492845_AD502D65 X-CRM114-Status: GOOD ( 13.22 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list 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-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org On 9/15/23 14:12, 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 denali_chip. > > [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci > > Cc: Miquel Raynal > Cc: Richard Weinberger > Cc: Vignesh Raghavendra > Cc: linux-mtd@lists.infradead.org > Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva Thanks -- Gustavo > --- > drivers/mtd/nand/raw/denali.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/mtd/nand/raw/denali.h b/drivers/mtd/nand/raw/denali.h > index ac46eb7956ce..5f2fab022fc5 100644 > --- a/drivers/mtd/nand/raw/denali.h > +++ b/drivers/mtd/nand/raw/denali.h > @@ -328,7 +328,7 @@ struct denali_chip { > struct nand_chip chip; > struct list_head node; > unsigned int nsels; > - struct denali_chip_sel sels[]; > + struct denali_chip_sel sels[] __counted_by(nsels); > }; > > /** ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/