| { |
| "PTR_TO_STACK store/load", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -10), |
| BPF_ST_MEM(BPF_DW, BPF_REG_1, 2, 0xfaceb00c), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 2), |
| BPF_EXIT_INSN(), |
| }, |
| .result = ACCEPT, |
| .retval = 0xfaceb00c, |
| }, |
| { |
| "PTR_TO_STACK store/load - bad alignment on off", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8), |
| BPF_ST_MEM(BPF_DW, BPF_REG_1, 2, 0xfaceb00c), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 2), |
| BPF_EXIT_INSN(), |
| }, |
| .result = REJECT, |
| .errstr = "misaligned stack access off (0x0; 0x0)+-8+2 size 8", |
| }, |
| { |
| "PTR_TO_STACK store/load - bad alignment on reg", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -10), |
| BPF_ST_MEM(BPF_DW, BPF_REG_1, 8, 0xfaceb00c), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 8), |
| BPF_EXIT_INSN(), |
| }, |
| .result = REJECT, |
| .errstr = "misaligned stack access off (0x0; 0x0)+-10+8 size 8", |
| }, |
| { |
| "PTR_TO_STACK store/load - out of bounds low", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -80000), |
| BPF_ST_MEM(BPF_DW, BPF_REG_1, 8, 0xfaceb00c), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 8), |
| BPF_EXIT_INSN(), |
| }, |
| .result = REJECT, |
| .errstr = "invalid write to stack R1 off=-79992 size=8", |
| .errstr_unpriv = "R1 stack pointer arithmetic goes out of range", |
| }, |
| { |
| "PTR_TO_STACK store/load - out of bounds high", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8), |
| BPF_ST_MEM(BPF_DW, BPF_REG_1, 8, 0xfaceb00c), |
| BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 8), |
| BPF_EXIT_INSN(), |
| }, |
| .result = REJECT, |
| .errstr = "invalid write to stack R1 off=0 size=8", |
| }, |
| { |
| "PTR_TO_STACK check high 1", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -1), |
| BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42), |
| BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .result = ACCEPT, |
| .retval = 42, |
| }, |
| { |
| "PTR_TO_STACK check high 2", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ST_MEM(BPF_B, BPF_REG_1, -1, 42), |
| BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, -1), |
| BPF_EXIT_INSN(), |
| }, |
| .result = ACCEPT, |
| .retval = 42, |
| }, |
| { |
| "PTR_TO_STACK check high 3", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0), |
| BPF_ST_MEM(BPF_B, BPF_REG_1, -1, 42), |
| BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, -1), |
| BPF_EXIT_INSN(), |
| }, |
| .errstr_unpriv = "R1 stack pointer arithmetic goes out of range", |
| .result_unpriv = REJECT, |
| .result = ACCEPT, |
| .retval = 42, |
| }, |
| { |
| "PTR_TO_STACK check high 4", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0), |
| BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42), |
| BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .errstr_unpriv = "R1 stack pointer arithmetic goes out of range", |
| .errstr = "invalid write to stack R1 off=0 size=1", |
| .result = REJECT, |
| }, |
| { |
| "PTR_TO_STACK check high 5", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, (1 << 29) - 1), |
| BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42), |
| BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .result = REJECT, |
| .errstr_unpriv = "R1 stack pointer arithmetic goes out of range", |
| .errstr = "invalid write to stack R1", |
| }, |
| { |
| "PTR_TO_STACK check high 6", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, (1 << 29) - 1), |
| BPF_ST_MEM(BPF_B, BPF_REG_1, SHRT_MAX, 42), |
| BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, SHRT_MAX), |
| BPF_EXIT_INSN(), |
| }, |
| .result = REJECT, |
| .errstr_unpriv = "R1 stack pointer arithmetic goes out of range", |
| .errstr = "invalid write to stack", |
| }, |
| { |
| "PTR_TO_STACK check high 7", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, (1 << 29) - 1), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, (1 << 29) - 1), |
| BPF_ST_MEM(BPF_B, BPF_REG_1, SHRT_MAX, 42), |
| BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, SHRT_MAX), |
| BPF_EXIT_INSN(), |
| }, |
| .result = REJECT, |
| .errstr_unpriv = "R1 stack pointer arithmetic goes out of range", |
| .errstr = "fp pointer offset", |
| }, |
| { |
| "PTR_TO_STACK check low 1", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -512), |
| BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42), |
| BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .result = ACCEPT, |
| .retval = 42, |
| }, |
| { |
| "PTR_TO_STACK check low 2", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -513), |
| BPF_ST_MEM(BPF_B, BPF_REG_1, 1, 42), |
| BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 1), |
| BPF_EXIT_INSN(), |
| }, |
| .result_unpriv = REJECT, |
| .errstr_unpriv = "R1 stack pointer arithmetic goes out of range", |
| .result = ACCEPT, |
| .retval = 42, |
| }, |
| { |
| "PTR_TO_STACK check low 3", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -513), |
| BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42), |
| BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .errstr_unpriv = "R1 stack pointer arithmetic goes out of range", |
| .errstr = "invalid write to stack R1 off=-513 size=1", |
| .result = REJECT, |
| }, |
| { |
| "PTR_TO_STACK check low 4", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, INT_MIN), |
| BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42), |
| BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .result = REJECT, |
| .errstr = "math between fp pointer", |
| }, |
| { |
| "PTR_TO_STACK check low 5", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -((1 << 29) - 1)), |
| BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42), |
| BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .result = REJECT, |
| .errstr_unpriv = "R1 stack pointer arithmetic goes out of range", |
| .errstr = "invalid write to stack", |
| }, |
| { |
| "PTR_TO_STACK check low 6", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -((1 << 29) - 1)), |
| BPF_ST_MEM(BPF_B, BPF_REG_1, SHRT_MIN, 42), |
| BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, SHRT_MIN), |
| BPF_EXIT_INSN(), |
| }, |
| .result = REJECT, |
| .errstr = "invalid write to stack", |
| .errstr_unpriv = "R1 stack pointer arithmetic goes out of range", |
| }, |
| { |
| "PTR_TO_STACK check low 7", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -((1 << 29) - 1)), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -((1 << 29) - 1)), |
| BPF_ST_MEM(BPF_B, BPF_REG_1, SHRT_MIN, 42), |
| BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, SHRT_MIN), |
| BPF_EXIT_INSN(), |
| }, |
| .result = REJECT, |
| .errstr_unpriv = "R1 stack pointer arithmetic goes out of range", |
| .errstr = "fp pointer offset", |
| }, |
| { |
| "PTR_TO_STACK mixed reg/k, 1", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -3), |
| BPF_MOV64_IMM(BPF_REG_2, -3), |
| BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_2), |
| BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42), |
| BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .result = ACCEPT, |
| .retval = 42, |
| }, |
| { |
| "PTR_TO_STACK mixed reg/k, 2", |
| .insns = { |
| BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), |
| BPF_ST_MEM(BPF_DW, BPF_REG_10, -16, 0), |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -3), |
| BPF_MOV64_IMM(BPF_REG_2, -3), |
| BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_2), |
| BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42), |
| BPF_MOV64_REG(BPF_REG_5, BPF_REG_10), |
| BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_5, -6), |
| BPF_EXIT_INSN(), |
| }, |
| .result = ACCEPT, |
| .retval = 42, |
| }, |
| { |
| "PTR_TO_STACK mixed reg/k, 3", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -3), |
| BPF_MOV64_IMM(BPF_REG_2, -3), |
| BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_2), |
| BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42), |
| BPF_MOV64_REG(BPF_REG_0, BPF_REG_2), |
| BPF_EXIT_INSN(), |
| }, |
| .result = ACCEPT, |
| .retval = -3, |
| }, |
| { |
| "PTR_TO_STACK reg", |
| .insns = { |
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_10), |
| BPF_MOV64_IMM(BPF_REG_2, -3), |
| BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_2), |
| BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42), |
| BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0), |
| BPF_EXIT_INSN(), |
| }, |
| .result = ACCEPT, |
| .retval = 42, |
| }, |
| { |
| "stack pointer arithmetic", |
| .insns = { |
| BPF_MOV64_IMM(BPF_REG_1, 4), |
| BPF_JMP_IMM(BPF_JA, 0, 0, 0), |
| BPF_MOV64_REG(BPF_REG_7, BPF_REG_10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_7, -10), |
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_7, -10), |
| BPF_MOV64_REG(BPF_REG_2, BPF_REG_7), |
| 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, |
| }, |
