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Date: Wed, 12 Aug 2020 08:47:06 -0700 From: Stanislav Fomichev <sdf@...gle.com> To: Toke Høiland-Jørgensen <toke@...hat.com> Cc: Andrii Nakryiko <andriin@...com>, bpf <bpf@...r.kernel.org>, Netdev <netdev@...r.kernel.org>, Alexei Starovoitov <ast@...com>, Daniel Borkmann <daniel@...earbox.net>, Andrii Nakryiko <andrii.nakryiko@...il.com>, Kernel Team <kernel-team@...com> Subject: Re: [PATCH bpf] bpf: fix XDP FD-based attach/detach logic around XDP_FLAGS_UPDATE_IF_NOEXIST On Wed, Aug 12, 2020 at 2:24 AM Toke Høiland-Jørgensen <toke@...hat.com> wrote: > > Andrii Nakryiko <andriin@...com> writes: > > > Enforce XDP_FLAGS_UPDATE_IF_NOEXIST only if new BPF program to be attached is > > non-NULL (i.e., we are not detaching a BPF program). > > > > Reported-by: Stanislav Fomichev <sdf@...gle.com> > > Fixes: d4baa9368a5e ("bpf, xdp: Extract common XDP program attachment logic") > > Signed-off-by: Andrii Nakryiko <andriin@...com> > > Acked-by: Toke Høiland-Jørgensen <toke@...hat.com> That fixed it for me, thank you! Tested-by: Stanislav Fomichev <sdf@...gle.com>
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