Re: [PATCH bpf v3] xsk: Add missing overflow check in xdp_umem_reg

From: Daniel Borkmann
Date: Thu Mar 16 2023 - 17:14:29 EST


On 3/16/23 1:52 PM, Magnus Karlsson wrote:
On Wed, 8 Mar 2023 at 18:51, Kal Conley <kal.conley@xxxxxxxxxxx> wrote:

The number of chunks can overflow u32. Make sure to return -EINVAL on
overflow.

Also remove a redundant u32 cast assigning umem->npgs.

Thanks!

Acked-by: Magnus Karlsson <magnus.karlsson@xxxxxxxxx>

Fixes: bbff2f321a86 ("xsk: new descriptor addressing scheme")
Signed-off-by: Kal Conley <kal.conley@xxxxxxxxxxx>

Looks like patchbot was on partial strike, this was applied to bpf, thanks!