| { |
| "raw_stack: no skb_load_bytes", |
| .insns = { |
| BPF_MOV64_IMM(BPF_REG_2, 4), |
| BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8), |
| BPF_MOV64_REG(BPF_REG_3, BPF_REG_6), |
| BPF_MOV64_IMM(BPF_REG_4, 8), |
| /* Call to skb_load_bytes() omitted. */ |
| BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .result = REJECT, |
| .errstr = "invalid read from stack R6 off=-8 size=8", |
| .prog_type = BPF_PROG_TYPE_SCHED_CLS, |
| }, |
| { |
| "raw_stack: skb_load_bytes, negative len", |
| .insns = { |
| BPF_MOV64_IMM(BPF_REG_2, 4), |
| BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8), |
| BPF_MOV64_REG(BPF_REG_3, BPF_REG_6), |
| BPF_MOV64_IMM(BPF_REG_4, -8), |
| BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .result = REJECT, |
| .errstr = "R4 min value is negative", |
| .prog_type = BPF_PROG_TYPE_SCHED_CLS, |
| }, |
| { |
| "raw_stack: skb_load_bytes, negative len 2", |
| .insns = { |
| BPF_MOV64_IMM(BPF_REG_2, 4), |
| BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8), |
| BPF_MOV64_REG(BPF_REG_3, BPF_REG_6), |
| BPF_MOV64_IMM(BPF_REG_4, ~0), |
| BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .result = REJECT, |
| .errstr = "R4 min value is negative", |
| .prog_type = BPF_PROG_TYPE_SCHED_CLS, |
| }, |
| { |
| "raw_stack: skb_load_bytes, zero len", |
| .insns = { |
| BPF_MOV64_IMM(BPF_REG_2, 4), |
| BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8), |
| BPF_MOV64_REG(BPF_REG_3, BPF_REG_6), |
| BPF_MOV64_IMM(BPF_REG_4, 0), |
| BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .result = REJECT, |
| .errstr = "invalid zero-sized read", |
| .prog_type = BPF_PROG_TYPE_SCHED_CLS, |
| }, |
| { |
| "raw_stack: skb_load_bytes, no init", |
| .insns = { |
| BPF_MOV64_IMM(BPF_REG_2, 4), |
| BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8), |
| BPF_MOV64_REG(BPF_REG_3, BPF_REG_6), |
| BPF_MOV64_IMM(BPF_REG_4, 8), |
| BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .result = ACCEPT, |
| .prog_type = BPF_PROG_TYPE_SCHED_CLS, |
| }, |
| { |
| "raw_stack: skb_load_bytes, init", |
| .insns = { |
| BPF_MOV64_IMM(BPF_REG_2, 4), |
| BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8), |
| BPF_ST_MEM(BPF_DW, BPF_REG_6, 0, 0xcafe), |
| BPF_MOV64_REG(BPF_REG_3, BPF_REG_6), |
| BPF_MOV64_IMM(BPF_REG_4, 8), |
| BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .result = ACCEPT, |
| .prog_type = BPF_PROG_TYPE_SCHED_CLS, |
| }, |
| { |
| "raw_stack: skb_load_bytes, spilled regs around bounds", |
| .insns = { |
| BPF_MOV64_IMM(BPF_REG_2, 4), |
| BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -16), |
| BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, -8), |
| BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 8), |
| BPF_MOV64_REG(BPF_REG_3, BPF_REG_6), |
| BPF_MOV64_IMM(BPF_REG_4, 8), |
| BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, -8), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_6, 8), |
| BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, |
| offsetof(struct __sk_buff, mark)), |
| BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_2, |
| offsetof(struct __sk_buff, priority)), |
| BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_2), |
| BPF_EXIT_INSN(), |
| }, |
| .result = ACCEPT, |
| .prog_type = BPF_PROG_TYPE_SCHED_CLS, |
| }, |
| { |
| "raw_stack: skb_load_bytes, spilled regs corruption", |
| .insns = { |
| BPF_MOV64_IMM(BPF_REG_2, 4), |
| BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8), |
| BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 0), |
| BPF_MOV64_REG(BPF_REG_3, BPF_REG_6), |
| BPF_MOV64_IMM(BPF_REG_4, 8), |
| BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0), |
| BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, |
| offsetof(struct __sk_buff, mark)), |
| BPF_EXIT_INSN(), |
| }, |
| .result = REJECT, |
| .errstr = "R0 invalid mem access 'inv'", |
| .prog_type = BPF_PROG_TYPE_SCHED_CLS, |
| .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, |
| }, |
| { |
| "raw_stack: skb_load_bytes, spilled regs corruption 2", |
| .insns = { |
| BPF_MOV64_IMM(BPF_REG_2, 4), |
| BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -16), |
| BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, -8), |
| BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 0), |
| BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 8), |
| BPF_MOV64_REG(BPF_REG_3, BPF_REG_6), |
| BPF_MOV64_IMM(BPF_REG_4, 8), |
| BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, -8), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_6, 8), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_3, BPF_REG_6, 0), |
| BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, |
| offsetof(struct __sk_buff, mark)), |
| BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_2, |
| offsetof(struct __sk_buff, priority)), |
| BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_2), |
| BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_3, |
| offsetof(struct __sk_buff, pkt_type)), |
| BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_3), |
| BPF_EXIT_INSN(), |
| }, |
| .result = REJECT, |
| .errstr = "R3 invalid mem access 'inv'", |
| .prog_type = BPF_PROG_TYPE_SCHED_CLS, |
| .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, |
| }, |
| { |
| "raw_stack: skb_load_bytes, spilled regs + data", |
| .insns = { |
| BPF_MOV64_IMM(BPF_REG_2, 4), |
| BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -16), |
| BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, -8), |
| BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 0), |
| BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 8), |
| BPF_MOV64_REG(BPF_REG_3, BPF_REG_6), |
| BPF_MOV64_IMM(BPF_REG_4, 8), |
| BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, -8), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_6, 8), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_3, BPF_REG_6, 0), |
| BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, |
| offsetof(struct __sk_buff, mark)), |
| BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_2, |
| offsetof(struct __sk_buff, priority)), |
| BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_2), |
| BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_3), |
| BPF_EXIT_INSN(), |
| }, |
| .result = ACCEPT, |
| .prog_type = BPF_PROG_TYPE_SCHED_CLS, |
| }, |
| { |
| "raw_stack: skb_load_bytes, invalid access 1", |
| .insns = { |
| BPF_MOV64_IMM(BPF_REG_2, 4), |
| BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -513), |
| BPF_MOV64_REG(BPF_REG_3, BPF_REG_6), |
| BPF_MOV64_IMM(BPF_REG_4, 8), |
| BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .result = REJECT, |
| .errstr = "invalid indirect access to stack R3 off=-513 size=8", |
| .prog_type = BPF_PROG_TYPE_SCHED_CLS, |
| }, |
| { |
| "raw_stack: skb_load_bytes, invalid access 2", |
| .insns = { |
| BPF_MOV64_IMM(BPF_REG_2, 4), |
| BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -1), |
| BPF_MOV64_REG(BPF_REG_3, BPF_REG_6), |
| BPF_MOV64_IMM(BPF_REG_4, 8), |
| BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .result = REJECT, |
| .errstr = "invalid indirect access to stack R3 off=-1 size=8", |
| .prog_type = BPF_PROG_TYPE_SCHED_CLS, |
| }, |
| { |
| "raw_stack: skb_load_bytes, invalid access 3", |
| .insns = { |
| BPF_MOV64_IMM(BPF_REG_2, 4), |
| BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 0xffffffff), |
| BPF_MOV64_REG(BPF_REG_3, BPF_REG_6), |
| BPF_MOV64_IMM(BPF_REG_4, 0xffffffff), |
| BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .result = REJECT, |
| .errstr = "R4 min value is negative", |
| .prog_type = BPF_PROG_TYPE_SCHED_CLS, |
| }, |
| { |
| "raw_stack: skb_load_bytes, invalid access 4", |
| .insns = { |
| BPF_MOV64_IMM(BPF_REG_2, 4), |
| BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -1), |
| BPF_MOV64_REG(BPF_REG_3, BPF_REG_6), |
| BPF_MOV64_IMM(BPF_REG_4, 0x7fffffff), |
| BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .result = REJECT, |
| .errstr = "R4 unbounded memory access, use 'var &= const' or 'if (var < const)'", |
| .prog_type = BPF_PROG_TYPE_SCHED_CLS, |
| }, |
| { |
| "raw_stack: skb_load_bytes, invalid access 5", |
| .insns = { |
| BPF_MOV64_IMM(BPF_REG_2, 4), |
| BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -512), |
| BPF_MOV64_REG(BPF_REG_3, BPF_REG_6), |
| BPF_MOV64_IMM(BPF_REG_4, 0x7fffffff), |
| BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .result = REJECT, |
| .errstr = "R4 unbounded memory access, use 'var &= const' or 'if (var < const)'", |
| .prog_type = BPF_PROG_TYPE_SCHED_CLS, |
| }, |
| { |
| "raw_stack: skb_load_bytes, invalid access 6", |
| .insns = { |
| BPF_MOV64_IMM(BPF_REG_2, 4), |
| BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -512), |
| BPF_MOV64_REG(BPF_REG_3, BPF_REG_6), |
| BPF_MOV64_IMM(BPF_REG_4, 0), |
| BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .result = REJECT, |
| .errstr = "invalid zero-sized read", |
| .prog_type = BPF_PROG_TYPE_SCHED_CLS, |
| }, |
| { |
| "raw_stack: skb_load_bytes, large access", |
| .insns = { |
| BPF_MOV64_IMM(BPF_REG_2, 4), |
| BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -512), |
| BPF_MOV64_REG(BPF_REG_3, BPF_REG_6), |
| BPF_MOV64_IMM(BPF_REG_4, 512), |
| BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .result = ACCEPT, |
| .prog_type = BPF_PROG_TYPE_SCHED_CLS, |
| }, |
