360 lines
9.6 KiB
C
360 lines
9.6 KiB
C
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{
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"PTR_TO_STACK store/load",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -10),
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BPF_ST_MEM(BPF_DW, BPF_REG_1, 2, 0xfaceb00c),
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BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 2),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.retval = 0xfaceb00c,
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},
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{
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"PTR_TO_STACK store/load - bad alignment on off",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8),
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BPF_ST_MEM(BPF_DW, BPF_REG_1, 2, 0xfaceb00c),
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BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 2),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr = "misaligned stack access off (0x0; 0x0)+-8+2 size 8",
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},
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{
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"PTR_TO_STACK store/load - bad alignment on reg",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -10),
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BPF_ST_MEM(BPF_DW, BPF_REG_1, 8, 0xfaceb00c),
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BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 8),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr = "misaligned stack access off (0x0; 0x0)+-10+8 size 8",
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},
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{
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"PTR_TO_STACK store/load - out of bounds low",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -80000),
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BPF_ST_MEM(BPF_DW, BPF_REG_1, 8, 0xfaceb00c),
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BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 8),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr = "invalid write to stack R1 off=-79992 size=8",
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.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
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},
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{
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"PTR_TO_STACK store/load - out of bounds high",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8),
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BPF_ST_MEM(BPF_DW, BPF_REG_1, 8, 0xfaceb00c),
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BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 8),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr = "invalid write to stack R1 off=0 size=8",
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},
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{
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"PTR_TO_STACK check high 1",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -1),
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BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
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BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.retval = 42,
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},
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{
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"PTR_TO_STACK check high 2",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ST_MEM(BPF_B, BPF_REG_1, -1, 42),
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BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, -1),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.retval = 42,
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},
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{
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"PTR_TO_STACK check high 3",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0),
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BPF_ST_MEM(BPF_B, BPF_REG_1, -1, 42),
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BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, -1),
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BPF_EXIT_INSN(),
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},
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.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
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.result_unpriv = REJECT,
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.result = ACCEPT,
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.retval = 42,
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},
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{
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"PTR_TO_STACK check high 4",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0),
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BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
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BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
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BPF_EXIT_INSN(),
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},
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.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
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.errstr = "invalid write to stack R1 off=0 size=1",
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.result = REJECT,
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},
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{
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"PTR_TO_STACK check high 5",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, (1 << 29) - 1),
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BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
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BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
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.errstr = "invalid write to stack R1",
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},
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{
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"PTR_TO_STACK check high 6",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, (1 << 29) - 1),
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BPF_ST_MEM(BPF_B, BPF_REG_1, SHRT_MAX, 42),
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BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, SHRT_MAX),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
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.errstr = "invalid write to stack",
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},
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{
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"PTR_TO_STACK check high 7",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, (1 << 29) - 1),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, (1 << 29) - 1),
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BPF_ST_MEM(BPF_B, BPF_REG_1, SHRT_MAX, 42),
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BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, SHRT_MAX),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
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.errstr = "fp pointer offset",
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},
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{
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"PTR_TO_STACK check low 1",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -512),
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BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
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BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.retval = 42,
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},
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{
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"PTR_TO_STACK check low 2",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -513),
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BPF_ST_MEM(BPF_B, BPF_REG_1, 1, 42),
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BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 1),
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BPF_EXIT_INSN(),
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},
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.result_unpriv = REJECT,
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.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
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.result = ACCEPT,
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.retval = 42,
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},
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{
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"PTR_TO_STACK check low 3",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -513),
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BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
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BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
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BPF_EXIT_INSN(),
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},
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.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
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.errstr = "invalid write to stack R1 off=-513 size=1",
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.result = REJECT,
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},
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{
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"PTR_TO_STACK check low 4",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, INT_MIN),
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BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
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BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr = "math between fp pointer",
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},
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{
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"PTR_TO_STACK check low 5",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -((1 << 29) - 1)),
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BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
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BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
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.errstr = "invalid write to stack",
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},
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{
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"PTR_TO_STACK check low 6",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -((1 << 29) - 1)),
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BPF_ST_MEM(BPF_B, BPF_REG_1, SHRT_MIN, 42),
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BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, SHRT_MIN),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr = "invalid write to stack",
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.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
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},
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{
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"PTR_TO_STACK check low 7",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -((1 << 29) - 1)),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -((1 << 29) - 1)),
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BPF_ST_MEM(BPF_B, BPF_REG_1, SHRT_MIN, 42),
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BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, SHRT_MIN),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
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.errstr = "fp pointer offset",
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},
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{
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"PTR_TO_STACK mixed reg/k, 1",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -3),
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BPF_MOV64_IMM(BPF_REG_2, -3),
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BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_2),
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BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
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BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.retval = 42,
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},
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{
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"PTR_TO_STACK mixed reg/k, 2",
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.insns = {
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BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
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BPF_ST_MEM(BPF_DW, BPF_REG_10, -16, 0),
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -3),
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BPF_MOV64_IMM(BPF_REG_2, -3),
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BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_2),
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BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
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BPF_MOV64_REG(BPF_REG_5, BPF_REG_10),
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BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_5, -6),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.retval = 42,
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},
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{
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"PTR_TO_STACK mixed reg/k, 3",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -3),
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BPF_MOV64_IMM(BPF_REG_2, -3),
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BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_2),
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BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
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BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.retval = -3,
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},
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{
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"PTR_TO_STACK reg",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
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BPF_MOV64_IMM(BPF_REG_2, -3),
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BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_2),
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BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
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BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.retval = 42,
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},
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{
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"stack pointer arithmetic",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_1, 4),
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BPF_JMP_IMM(BPF_JA, 0, 0, 0),
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BPF_MOV64_REG(BPF_REG_7, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_7, -10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_7, -10),
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BPF_MOV64_REG(BPF_REG_2, BPF_REG_7),
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|
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BPF_ALU64_REG(BPF_ADD, BPF_REG_2, BPF_REG_1),
|
||
|
|
BPF_ST_MEM(0, BPF_REG_2, 4, 0),
|
||
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_7),
|
||
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 8),
|
||
|
|
BPF_ST_MEM(0, BPF_REG_2, 4, 0),
|
||
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||
|
|
BPF_EXIT_INSN(),
|
||
|
|
},
|
||
|
|
.result = ACCEPT,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
"store PTR_TO_STACK in R10 to array map using BPF_B",
|
||
|
|
.insns = {
|
||
|
|
/* Load pointer to map. */
|
||
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
||
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
||
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_2, 0, 0),
|
||
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
||
|
|
BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem),
|
||
|
|
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2),
|
||
|
|
BPF_MOV64_IMM(BPF_REG_0, 2),
|
||
|
|
BPF_EXIT_INSN(),
|
||
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
|
||
|
|
/* Copy R10 to R9. */
|
||
|
|
BPF_MOV64_REG(BPF_REG_9, BPF_REG_10),
|
||
|
|
/* Pollute other registers with unaligned values. */
|
||
|
|
BPF_MOV64_IMM(BPF_REG_2, -1),
|
||
|
|
BPF_MOV64_IMM(BPF_REG_3, -1),
|
||
|
|
BPF_MOV64_IMM(BPF_REG_4, -1),
|
||
|
|
BPF_MOV64_IMM(BPF_REG_5, -1),
|
||
|
|
BPF_MOV64_IMM(BPF_REG_6, -1),
|
||
|
|
BPF_MOV64_IMM(BPF_REG_7, -1),
|
||
|
|
BPF_MOV64_IMM(BPF_REG_8, -1),
|
||
|
|
/* Store both R9 and R10 with BPF_B and read back. */
|
||
|
|
BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_10, 0),
|
||
|
|
BPF_LDX_MEM(BPF_B, BPF_REG_2, BPF_REG_1, 0),
|
||
|
|
BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_9, 0),
|
||
|
|
BPF_LDX_MEM(BPF_B, BPF_REG_3, BPF_REG_1, 0),
|
||
|
|
/* Should read back as same value. */
|
||
|
|
BPF_JMP_REG(BPF_JEQ, BPF_REG_2, BPF_REG_3, 2),
|
||
|
|
BPF_MOV64_IMM(BPF_REG_0, 1),
|
||
|
|
BPF_EXIT_INSN(),
|
||
|
|
BPF_MOV64_IMM(BPF_REG_0, 42),
|
||
|
|
BPF_EXIT_INSN(),
|
||
|
|
},
|
||
|
|
.fixup_map_array_48b = { 3 },
|
||
|
|
.result = ACCEPT,
|
||
|
|
.retval = 42,
|
||
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||
|
|
},
|