From c2f803052bc7a7feb2e03befccc8e49b6ff1f5f5 Mon Sep 17 00:00:00 2001 From: Hou Tao Date: Thu, 24 Oct 2024 09:35:57 +0800 Subject: bpf: Add the missing BPF_LINK_TYPE invocation for sockmap There is an out-of-bounds read in bpf_link_show_fdinfo() for the sockmap link fd. Fix it by adding the missing BPF_LINK_TYPE invocation for sockmap link Also add comments for bpf_link_type to prevent missing updates in the future. Fixes: 699c23f02c65 ("bpf: Add bpf_link support for sk_msg and sk_skb progs") Signed-off-by: Hou Tao Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20241024013558.1135167-2-houtao@huaweicloud.com --- tools/include/uapi/linux/bpf.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'tools/include/uapi/linux/bpf.h') diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h index e8241b320c6d..4a939c90dc2e 100644 --- a/tools/include/uapi/linux/bpf.h +++ b/tools/include/uapi/linux/bpf.h @@ -1121,6 +1121,9 @@ enum bpf_attach_type { #define MAX_BPF_ATTACH_TYPE __MAX_BPF_ATTACH_TYPE +/* Add BPF_LINK_TYPE(type, name) in bpf_types.h to keep bpf_link_type_strs[] + * in sync with the definitions below. + */ enum bpf_link_type { BPF_LINK_TYPE_UNSPEC = 0, BPF_LINK_TYPE_RAW_TRACEPOINT = 1, -- cgit