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Commit 945a47d8 authored by John Fastabend's avatar John Fastabend Committed by Daniel Borkmann
Browse files

bpf: sk_msg, add tests for size field 



This adds tests to read the size field to test_verifier.

Signed-off-by: default avatarJohn Fastabend <john.fastabend@gmail.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
parent 584e4681

tools/testing/selftests/bpf/test_verifier.c

+13 −3
Original line number Diff line number Diff line
@@ -1843,10 +1843,20 @@ static struct bpf_test tests[] = { 
		.prog_type = BPF_PROG_TYPE_SK_SKB,

	},

	{

		"invalid 64B read of family in SK_MSG",

		"valid access size in SK_MSG",

		.insns = {

			BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,

				    offsetof(struct sk_msg_md, size)),

			BPF_EXIT_INSN(),

		},

		.result = ACCEPT,

		.prog_type = BPF_PROG_TYPE_SK_MSG,

	},

	{

		"invalid 64B read of size in SK_MSG",

		.insns = {

			BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_1,

				    offsetof(struct sk_msg_md, family)),

				    offsetof(struct sk_msg_md, size)),

			BPF_EXIT_INSN(),

		},

		.errstr = "invalid bpf_context access",
@@ -1857,7 +1867,7 @@ static struct bpf_test tests[] = { 
		"invalid read past end of SK_MSG",

		.insns = {

			BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,

				    offsetof(struct sk_msg_md, local_port) + 4),

				    offsetof(struct sk_msg_md, size) + 4),

			BPF_EXIT_INSN(),

		},

		.errstr = "R0 !read_ok",