220 lines
6.5 KiB
C
220 lines
6.5 KiB
C
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{
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"precise: test 1",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 1),
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BPF_LD_MAP_FD(BPF_REG_6, 0),
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
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BPF_MOV64_REG(BPF_REG_2, BPF_REG_FP),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
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BPF_ST_MEM(BPF_DW, BPF_REG_FP, -8, 0),
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BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem),
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BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
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BPF_EXIT_INSN(),
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BPF_MOV64_REG(BPF_REG_9, BPF_REG_0),
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
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BPF_MOV64_REG(BPF_REG_2, BPF_REG_FP),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
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BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem),
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BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
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BPF_EXIT_INSN(),
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BPF_MOV64_REG(BPF_REG_8, BPF_REG_0),
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BPF_ALU64_REG(BPF_SUB, BPF_REG_9, BPF_REG_8), /* map_value_ptr -= map_value_ptr */
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BPF_MOV64_REG(BPF_REG_2, BPF_REG_9),
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BPF_JMP_IMM(BPF_JLT, BPF_REG_2, 8, 1),
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BPF_EXIT_INSN(),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 1), /* R2=scalar(umin=1, umax=8) */
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_FP),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8),
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BPF_MOV64_IMM(BPF_REG_3, 0),
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BPF_EMIT_CALL(BPF_FUNC_probe_read_kernel),
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BPF_EXIT_INSN(),
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},
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.prog_type = BPF_PROG_TYPE_TRACEPOINT,
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.fixup_map_array_48b = { 1 },
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.result = VERBOSE_ACCEPT,
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.errstr =
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"26: (85) call bpf_probe_read_kernel#113\
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last_idx 26 first_idx 20\
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regs=4 stack=0 before 25\
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regs=4 stack=0 before 24\
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regs=4 stack=0 before 23\
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regs=4 stack=0 before 22\
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regs=4 stack=0 before 20\
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parent didn't have regs=4 stack=0 marks\
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last_idx 19 first_idx 10\
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regs=4 stack=0 before 19\
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regs=200 stack=0 before 18\
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regs=300 stack=0 before 17\
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regs=201 stack=0 before 15\
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regs=201 stack=0 before 14\
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regs=200 stack=0 before 13\
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regs=200 stack=0 before 12\
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regs=200 stack=0 before 11\
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regs=200 stack=0 before 10\
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parent already had regs=0 stack=0 marks",
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},
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{
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"precise: test 2",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 1),
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BPF_LD_MAP_FD(BPF_REG_6, 0),
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
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BPF_MOV64_REG(BPF_REG_2, BPF_REG_FP),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
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BPF_ST_MEM(BPF_DW, BPF_REG_FP, -8, 0),
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BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem),
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BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
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BPF_EXIT_INSN(),
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BPF_MOV64_REG(BPF_REG_9, BPF_REG_0),
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
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BPF_MOV64_REG(BPF_REG_2, BPF_REG_FP),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
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BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem),
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BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
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BPF_EXIT_INSN(),
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BPF_MOV64_REG(BPF_REG_8, BPF_REG_0),
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BPF_ALU64_REG(BPF_SUB, BPF_REG_9, BPF_REG_8), /* map_value_ptr -= map_value_ptr */
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BPF_MOV64_REG(BPF_REG_2, BPF_REG_9),
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BPF_JMP_IMM(BPF_JLT, BPF_REG_2, 8, 1),
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BPF_EXIT_INSN(),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 1), /* R2=scalar(umin=1, umax=8) */
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_FP),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8),
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BPF_MOV64_IMM(BPF_REG_3, 0),
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BPF_EMIT_CALL(BPF_FUNC_probe_read_kernel),
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BPF_EXIT_INSN(),
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},
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.prog_type = BPF_PROG_TYPE_TRACEPOINT,
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.fixup_map_array_48b = { 1 },
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.result = VERBOSE_ACCEPT,
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.flags = BPF_F_TEST_STATE_FREQ,
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.errstr =
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"26: (85) call bpf_probe_read_kernel#113\
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last_idx 26 first_idx 22\
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regs=4 stack=0 before 25\
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regs=4 stack=0 before 24\
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regs=4 stack=0 before 23\
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regs=4 stack=0 before 22\
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parent didn't have regs=4 stack=0 marks\
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last_idx 20 first_idx 20\
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regs=4 stack=0 before 20\
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parent didn't have regs=4 stack=0 marks\
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last_idx 19 first_idx 17\
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regs=4 stack=0 before 19\
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regs=200 stack=0 before 18\
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regs=300 stack=0 before 17\
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parent already had regs=0 stack=0 marks",
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},
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{
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"precise: cross frame pruning",
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.insns = {
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
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BPF_MOV64_IMM(BPF_REG_8, 0),
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BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
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BPF_MOV64_IMM(BPF_REG_8, 1),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
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BPF_MOV64_IMM(BPF_REG_9, 0),
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BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
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BPF_MOV64_IMM(BPF_REG_9, 1),
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 4),
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_8, 1, 1),
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BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_2, 0),
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 0),
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BPF_EXIT_INSN(),
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},
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.prog_type = BPF_PROG_TYPE_XDP,
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.flags = BPF_F_TEST_STATE_FREQ,
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.errstr = "!read_ok",
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.result = REJECT,
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},
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{
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"precise: ST insn causing spi > allocated_stack",
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.insns = {
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BPF_MOV64_REG(BPF_REG_3, BPF_REG_10),
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BPF_JMP_IMM(BPF_JNE, BPF_REG_3, 123, 0),
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BPF_ST_MEM(BPF_DW, BPF_REG_3, -8, 0),
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BPF_LDX_MEM(BPF_DW, BPF_REG_4, BPF_REG_10, -8),
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BPF_MOV64_IMM(BPF_REG_0, -1),
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BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.prog_type = BPF_PROG_TYPE_XDP,
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.flags = BPF_F_TEST_STATE_FREQ,
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.errstr = "5: (2d) if r4 > r0 goto pc+0\
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last_idx 5 first_idx 5\
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parent didn't have regs=10 stack=0 marks\
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last_idx 4 first_idx 2\
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regs=10 stack=0 before 4\
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regs=10 stack=0 before 3\
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regs=0 stack=1 before 2\
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last_idx 5 first_idx 5\
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parent didn't have regs=1 stack=0 marks",
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.result = VERBOSE_ACCEPT,
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.retval = -1,
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},
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{
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"precise: STX insn causing spi > allocated_stack",
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.insns = {
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
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BPF_MOV64_REG(BPF_REG_3, BPF_REG_10),
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BPF_JMP_IMM(BPF_JNE, BPF_REG_3, 123, 0),
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BPF_STX_MEM(BPF_DW, BPF_REG_3, BPF_REG_0, -8),
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BPF_LDX_MEM(BPF_DW, BPF_REG_4, BPF_REG_10, -8),
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BPF_MOV64_IMM(BPF_REG_0, -1),
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BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.prog_type = BPF_PROG_TYPE_XDP,
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.flags = BPF_F_TEST_STATE_FREQ,
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.errstr = "last_idx 6 first_idx 6\
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parent didn't have regs=10 stack=0 marks\
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last_idx 5 first_idx 3\
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regs=10 stack=0 before 5\
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regs=10 stack=0 before 4\
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regs=0 stack=1 before 3\
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last_idx 6 first_idx 6\
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parent didn't have regs=1 stack=0 marks\
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last_idx 5 first_idx 3\
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regs=1 stack=0 before 5",
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.result = VERBOSE_ACCEPT,
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.retval = -1,
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},
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{
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"precise: mark_chain_precision for ARG_CONST_ALLOC_SIZE_OR_ZERO",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_1, offsetof(struct xdp_md, ingress_ifindex)),
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BPF_LD_MAP_FD(BPF_REG_6, 0),
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
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BPF_MOV64_IMM(BPF_REG_2, 1),
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BPF_MOV64_IMM(BPF_REG_3, 0),
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_4, 0, 1),
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BPF_MOV64_IMM(BPF_REG_2, 0x1000),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_ringbuf_reserve),
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BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
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BPF_EXIT_INSN(),
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
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BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_0, 42),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_ringbuf_submit),
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.fixup_map_ringbuf = { 1 },
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.prog_type = BPF_PROG_TYPE_XDP,
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.flags = BPF_F_TEST_STATE_FREQ,
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.errstr = "invalid access to memory, mem_size=1 off=42 size=8",
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.result = REJECT,
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},
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