Commit 48ec74fd authored by Kees Cook's avatar Kees Cook Committed by Miquel Raynal
Browse files

mtd: rawnand: denali: Annotate struct denali_chip with __counted_by 

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 <miquel.raynal@bootlin.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Cc: linux-mtd@lists.infradead.org
Signed-off-by: default avatarKees Cook <keescook@chromium.org>
Reviewed-by: default avatarGustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230915201227.never.483-kees@kernel.org
parent 79c610ab

drivers/mtd/nand/raw/denali.h

+1 −1
Original line number Diff line number Diff line
@@ -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);

};



/**