On Tue, Feb 18, 2025 at 8:56 AM Haoxiang Li <haoxiang_li2024@xxxxxxx> wrote:
>
> Add check for the return value of nfp_app_ctrl_msg_alloc() in
> nfp_bpf_cmsg_alloc() to prevent null pointer dereference.
>
> Fixes: ff3d43f7568c ("nfp: bpf: implement helpers for FW map ops")
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Haoxiang Li <haoxiang_li2024@xxxxxxx>
> ---
> Changes in v3:
> - modify a spell error. Thanks, Kalesh!
> Changes in v2:
> - remove the bracket for one single-statement. Thanks, Guru!
> ---
> drivers/net/ethernet/netronome/nfp/bpf/cmsg.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/net/ethernet/netronome/nfp/bpf/cmsg.c b/drivers/net/ethernet/netronome/nfp/bpf/cmsg.c
> index 2ec62c8d86e1..59486fe2ad18 100644
> --- a/drivers/net/ethernet/netronome/nfp/bpf/cmsg.c
> +++ b/drivers/net/ethernet/netronome/nfp/bpf/cmsg.c
> @@ -20,6 +20,8 @@ nfp_bpf_cmsg_alloc(struct nfp_app_bpf *bpf, unsigned int size)
> struct sk_buff *skb;
>
> skb = nfp_app_ctrl_msg_alloc(bpf->app, size, GFP_KERNEL);
> + if (!skb)
> + return NULL;
> skb_put(skb, size);
>
> return skb;
> --
> 2.25.1
>
>
You should wait 24 hours before posting a new version of the patch.
https://docs.kernel.org/process/maintainer-netdev.html#resending-after-review
--
Regards,
Kalesh AP
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