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.

Hou Tao committed 2 years ago

Commit c2f80301 parent 9806f283 files · +7 −0Browse files

Showing the changes to include/uapi/linux (1 of 3 files). Show all

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include/uapi/linux/bpf.h+3−0

@@ -1121,6 +1121,9 @@ enum bpf_attach_type { · 1120 unmodified lines
1121		1121
1122	#define MAX_BPF_ATTACH_TYPE __MAX_BPF_ATTACH_TYPE	1122	#define MAX_BPF_ATTACH_TYPE __MAX_BPF_ATTACH_TYPE
1123		1123
		1124	/* Add BPF_LINK_TYPE(type, name) in bpf_types.h to keep bpf_link_type_strs[]
		1125	* in sync with the definitions below.
		1126	*/
1124	enum bpf_link_type {	1127	enum bpf_link_type {
1125	BPF_LINK_TYPE_UNSPEC = 0,	1128	BPF_LINK_TYPE_UNSPEC = 0,
1126	BPF_LINK_TYPE_RAW_TRACEPOINT = 1,	1129	BPF_LINK_TYPE_RAW_TRACEPOINT = 1,