Subject: Re: [PATCH 03/11] bnx2x: Fix undefined behavior due to shift overflowing the constant

From: Jakub Kicinski <[email-masked]>
Date: Tue, 5 Apr 2022 12:53:42 -0700

On Tue,  5 Apr 2022 17:15:09 +0200 Borislav Petkov wrote:
> From: Borislav Petkov <[email-masked]>
> 
> Fix:
> 
>   drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c: In function ‘bnx2x_check_blocks_with_parity3’:
>   drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c:4917:4: error: case label does not reduce to an integer constant
>       case AEU_INPUTS_ATTN_BITS_MCP_LATCHED_SCPAD_PARITY:
>       ^~~~
> 
> See https://lore.kernel.org/r/[email-masked] for the gory
> details as to why it triggers with older gccs only.
> 
> Signed-off-by: Borislav Petkov <[email-masked]>

I think this patch did not make it to netdev patchwork.
Could you resend (as a non-series patch - drop the 03/11
from the subject, that way build bot will not consider
it a partial/broken posting)? Thanks!

> diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h
> index 5caa75b41b73..881ac33fe914 100644
> --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h
> +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h
> @@ -6218,7 +6218,7 @@
>  #define AEU_INPUTS_ATTN_BITS_GPIO0_FUNCTION_0			 (0x1<<2)
>  #define AEU_INPUTS_ATTN_BITS_IGU_PARITY_ERROR			 (0x1<<12)
>  #define AEU_INPUTS_ATTN_BITS_MCP_LATCHED_ROM_PARITY		 (0x1<<28)
> -#define AEU_INPUTS_ATTN_BITS_MCP_LATCHED_SCPAD_PARITY		 (0x1<<31)
> +#define AEU_INPUTS_ATTN_BITS_MCP_LATCHED_SCPAD_PARITY		 (0x1U<<31)
>  #define AEU_INPUTS_ATTN_BITS_MCP_LATCHED_UMP_RX_PARITY		 (0x1<<29)
>  #define AEU_INPUTS_ATTN_BITS_MCP_LATCHED_UMP_TX_PARITY		 (0x1<<30)
>  #define AEU_INPUTS_ATTN_BITS_MISC_HW_INTERRUPT			 (0x1<<15)