tools/testing/selftests/bpf/verifier/ld_abs.c

Source file repositories/reference/linux-study-clean/tools/testing/selftests/bpf/verifier/ld_abs.c

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/bpf/verifier/ld_abs.c
Extension
.c
Size
7013 bytes
Lines
287
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

{
	"ld_abs: check calling conv, r1",
	.insns = {
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
	BPF_MOV64_IMM(BPF_REG_1, 0),
	BPF_LD_ABS(BPF_W, -0x200000),
	BPF_MOV64_REG(BPF_REG_0, BPF_REG_1),
	BPF_EXIT_INSN(),
	},
	.errstr = "R1 !read_ok",
	.result = REJECT,
},
{
	"ld_abs: check calling conv, r2",
	.insns = {
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
	BPF_MOV64_IMM(BPF_REG_2, 0),
	BPF_LD_ABS(BPF_W, -0x200000),
	BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
	BPF_EXIT_INSN(),
	},
	.errstr = "R2 !read_ok",
	.result = REJECT,
},
{
	"ld_abs: check calling conv, r3",
	.insns = {
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
	BPF_MOV64_IMM(BPF_REG_3, 0),
	BPF_LD_ABS(BPF_W, -0x200000),
	BPF_MOV64_REG(BPF_REG_0, BPF_REG_3),
	BPF_EXIT_INSN(),
	},
	.errstr = "R3 !read_ok",
	.result = REJECT,
},
{
	"ld_abs: check calling conv, r4",
	.insns = {
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
	BPF_MOV64_IMM(BPF_REG_4, 0),
	BPF_LD_ABS(BPF_W, -0x200000),
	BPF_MOV64_REG(BPF_REG_0, BPF_REG_4),
	BPF_EXIT_INSN(),
	},
	.errstr = "R4 !read_ok",
	.result = REJECT,
},
{
	"ld_abs: check calling conv, r5",
	.insns = {
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
	BPF_MOV64_IMM(BPF_REG_5, 0),
	BPF_LD_ABS(BPF_W, -0x200000),
	BPF_MOV64_REG(BPF_REG_0, BPF_REG_5),
	BPF_EXIT_INSN(),
	},
	.errstr = "R5 !read_ok",
	.result = REJECT,
},
{
	"ld_abs: check calling conv, r7",
	.insns = {
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
	BPF_MOV64_IMM(BPF_REG_7, 0),
	BPF_LD_ABS(BPF_W, -0x200000),
	BPF_MOV64_REG(BPF_REG_0, BPF_REG_7),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
},
{
	"ld_abs: tests on r6 and skb data reload helper",
	.insns = {
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
	BPF_LD_ABS(BPF_B, 0),
	BPF_LD_ABS(BPF_H, 0),
	BPF_LD_ABS(BPF_W, 0),
	BPF_MOV64_REG(BPF_REG_7, BPF_REG_6),
	BPF_MOV64_IMM(BPF_REG_6, 0),
	BPF_MOV64_REG(BPF_REG_1, BPF_REG_7),
	BPF_MOV64_IMM(BPF_REG_2, 1),
	BPF_MOV64_IMM(BPF_REG_3, 2),
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_vlan_push),
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_7),
	BPF_LD_ABS(BPF_B, 0),
	BPF_LD_ABS(BPF_H, 0),
	BPF_LD_ABS(BPF_W, 0),
	BPF_MOV64_IMM(BPF_REG_0, 42),
	BPF_EXIT_INSN(),

Annotation

Implementation Notes