| Message ID | 20230915201234.never.868-kees@kernel.org |
|---|---|
| State | Accepted |
| Headers | show |
| Series | mtd: rawnand: ingenic: Annotate struct ingenic_nfc with __counted_by | expand |
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 ingenic_nfc. > > [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci > > Cc: Paul Cercueil <paul@crapouillou.net> > Cc: Harvey Hunt <harveyhuntnexus@gmail.com> > Cc: Miquel Raynal <miquel.raynal@bootlin.com> > Cc: Richard Weinberger <richard@nod.at> > Cc: Vignesh Raghavendra <vigneshr@ti.com> > Cc: linux-mips@vger.kernel.org > Cc: linux-mtd@lists.infradead.org > Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Thanks
On Fri, 2023-09-15 at 20:12:35 UTC, 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 ingenic_nfc. > > [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci > > Cc: Paul Cercueil <paul@crapouillou.net> > Cc: Harvey Hunt <harveyhuntnexus@gmail.com> > Cc: Miquel Raynal <miquel.raynal@bootlin.com> > Cc: Richard Weinberger <richard@nod.at> > Cc: Vignesh Raghavendra <vigneshr@ti.com> > Cc: linux-mips@vger.kernel.org > Cc: linux-mtd@lists.infradead.org > Signed-off-by: Kees Cook <keescook@chromium.org> > Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git mtd/next, thanks. Miquel
diff --git a/drivers/mtd/nand/raw/ingenic/ingenic_nand_drv.c b/drivers/mtd/nand/raw/ingenic/ingenic_nand_drv.c index 6748226b8bd1..ce9ef4e65597 100644 --- a/drivers/mtd/nand/raw/ingenic/ingenic_nand_drv.c +++ b/drivers/mtd/nand/raw/ingenic/ingenic_nand_drv.c @@ -46,7 +46,7 @@ struct ingenic_nfc { struct nand_controller controller; unsigned int num_banks; struct list_head chips; - struct ingenic_nand_cs cs[]; + struct ingenic_nand_cs cs[] __counted_by(num_banks); }; struct ingenic_nand {
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 ingenic_nfc. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Paul Cercueil <paul@crapouillou.net> Cc: Harvey Hunt <harveyhuntnexus@gmail.com> Cc: Miquel Raynal <miquel.raynal@bootlin.com> Cc: Richard Weinberger <richard@nod.at> Cc: Vignesh Raghavendra <vigneshr@ti.com> Cc: linux-mips@vger.kernel.org Cc: linux-mtd@lists.infradead.org Signed-off-by: Kees Cook <keescook@chromium.org> --- drivers/mtd/nand/raw/ingenic/ingenic_nand_drv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)