Re: [PATCH v8 net-next 01/15] net: pppoe: avoid zero-length arrays in struct pppoe_hdr

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On 2/28/25 22:15, Eric Woudstra wrote:
> Jakub Kicinski suggested following patch:
> 
> W=1 C=1 GCC build gives us:
> 
> net/bridge/netfilter/nf_conntrack_bridge.c: note: in included file (through
> ../include/linux/if_pppox.h, ../include/uapi/linux/netfilter_bridge.h,
> ../include/linux/netfilter_bridge.h): include/uapi/linux/if_pppox.h:
> 153:29: warning: array of flexible structures
> 
> It doesn't like that hdr has a zero-length array which overlaps proto.
> The kernel code doesn't currently need those arrays.
> 
> PPPoE connection is functional after applying this patch.
> 
> Signed-off-by: Eric Woudstra <ericwouds@xxxxxxxxx>
> ---
>  drivers/net/ppp/pppoe.c       | 2 +-
>  include/uapi/linux/if_pppox.h | 4 ++++
>  2 files changed, 5 insertions(+), 1 deletion(-)
> 

Reviewed-by: Nikolay Aleksandrov <razor@xxxxxxxxxxxxx>





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