Re: [PATCH] scsi: qedf: Use designated initializer for struct qed_fcoe_cb_ops

[Nathan Chancellor <nathan@kernel.org>]

On Fri, May 02, 2025 at 03:41:57PM -0700, Kees Cook wrote:
> Recent fixes to the randstruct GCC plugin allowed it to notice
> that this structure is entirely function pointers and is therefore
> subject to randomization, but doing so requires that it always use
> designated initializers. Explicitly specify the "common" member as being
> initialized. Silences:
> 
> drivers/scsi/qedf/qedf_main.c:702:9: error: positional initialization of field in 'struct' declared with 'designated_init' attribute [-Werror=designated-init]
>   702 |         {
>       |         ^
> 
> Fixes: c2ea09b193d2 ("randstruct: gcc-plugin: Remove bogus void member")

For the record, this is also needed after your recent change to clang to
do the same thing as the plugin:

  drivers/scsi/qedf/qedf_main.c:702:2: error: a randomized struct can only be initialized with a designated initializer
  702 |         {
      |         ^

so this should probably have

  Cc: stable@vger.kernel.org
  Fixes: 035f7f87b729 ("randstruct: Enable Clang support")

> Signed-off-by: Kees Cook <kees@kernel.org>
> ---
> Cc: Saurav Kashyap <skashyap@marvell.com>
> Cc: Javed Hasan <jhasan@marvell.com>
> Cc: <GR-QLogic-Storage-Upstream@marvell.com>
> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
> Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
> Cc: <linux-scsi@vger.kernel.org>
> ---
>  drivers/scsi/qedf/qedf_main.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/scsi/qedf/qedf_main.c b/drivers/scsi/qedf/qedf_main.c
> index 436bd29d5eba..6b1ebab36fa3 100644
> --- a/drivers/scsi/qedf/qedf_main.c
> +++ b/drivers/scsi/qedf/qedf_main.c
> @@ -699,7 +699,7 @@ static u32 qedf_get_login_failures(void *cookie)
>  }
>  
>  static struct qed_fcoe_cb_ops qedf_cb_ops = {
> -	{
> +	.common = {
>  		.link_update = qedf_link_update,
>  		.bw_update = qedf_bw_update,
>  		.schedule_recovery_handler = qedf_schedule_recovery_handler,
> -- 
> 2.34.1
>