diff options
Diffstat (limited to 'tools/testing/selftests/bpf/verifier/runtime_jit.c')
| -rw-r--r-- | tools/testing/selftests/bpf/verifier/runtime_jit.c | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/verifier/runtime_jit.c b/tools/testing/selftests/bpf/verifier/runtime_jit.c new file mode 100644 index 000000000..94c399d1f --- /dev/null +++ b/tools/testing/selftests/bpf/verifier/runtime_jit.c @@ -0,0 +1,231 @@ +{ + "runtime/jit: tail_call within bounds, prog once", + .insns = { + BPF_MOV64_IMM(BPF_REG_3, 0), + BPF_LD_MAP_FD(BPF_REG_2, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call), + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .fixup_prog1 = { 1 }, + .result = ACCEPT, + .retval = 42, +}, +{ + "runtime/jit: tail_call within bounds, prog loop", + .insns = { + BPF_MOV64_IMM(BPF_REG_3, 1), + BPF_LD_MAP_FD(BPF_REG_2, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call), + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .fixup_prog1 = { 1 }, + .result = ACCEPT, + .retval = 41, +}, +{ + "runtime/jit: tail_call within bounds, no prog", + .insns = { + BPF_MOV64_IMM(BPF_REG_3, 3), + BPF_LD_MAP_FD(BPF_REG_2, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call), + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .fixup_prog1 = { 1 }, + .result = ACCEPT, + .retval = 1, +}, +{ + "runtime/jit: tail_call within bounds, key 2", + .insns = { + BPF_MOV64_IMM(BPF_REG_3, 2), + BPF_LD_MAP_FD(BPF_REG_2, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call), + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .fixup_prog1 = { 1 }, + .result = ACCEPT, + .retval = 24, +}, +{ + "runtime/jit: tail_call within bounds, key 2 / key 2, first branch", + .insns = { + BPF_MOV64_IMM(BPF_REG_0, 13), + BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, + offsetof(struct __sk_buff, cb[0])), + BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, + offsetof(struct __sk_buff, cb[0])), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 13, 4), + BPF_MOV64_IMM(BPF_REG_3, 2), + BPF_LD_MAP_FD(BPF_REG_2, 0), + BPF_JMP_IMM(BPF_JA, 0, 0, 3), + BPF_MOV64_IMM(BPF_REG_3, 2), + BPF_LD_MAP_FD(BPF_REG_2, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call), + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .fixup_prog1 = { 5, 9 }, + .result = ACCEPT, + .retval = 24, +}, +{ + "runtime/jit: tail_call within bounds, key 2 / key 2, second branch", + .insns = { + BPF_MOV64_IMM(BPF_REG_0, 14), + BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, + offsetof(struct __sk_buff, cb[0])), + BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, + offsetof(struct __sk_buff, cb[0])), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 13, 4), + BPF_MOV64_IMM(BPF_REG_3, 2), + BPF_LD_MAP_FD(BPF_REG_2, 0), + BPF_JMP_IMM(BPF_JA, 0, 0, 3), + BPF_MOV64_IMM(BPF_REG_3, 2), + BPF_LD_MAP_FD(BPF_REG_2, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call), + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .fixup_prog1 = { 5, 9 }, + .result = ACCEPT, + .retval = 24, +}, +{ + "runtime/jit: tail_call within bounds, key 0 / key 2, first branch", + .insns = { + BPF_MOV64_IMM(BPF_REG_0, 13), + BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, + offsetof(struct __sk_buff, cb[0])), + BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, + offsetof(struct __sk_buff, cb[0])), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 13, 4), + BPF_MOV64_IMM(BPF_REG_3, 0), + BPF_LD_MAP_FD(BPF_REG_2, 0), + BPF_JMP_IMM(BPF_JA, 0, 0, 3), + BPF_MOV64_IMM(BPF_REG_3, 2), + BPF_LD_MAP_FD(BPF_REG_2, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call), + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .fixup_prog1 = { 5, 9 }, + .result = ACCEPT, + .retval = 24, +}, +{ + "runtime/jit: tail_call within bounds, key 0 / key 2, second branch", + .insns = { + BPF_MOV64_IMM(BPF_REG_0, 14), + BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, + offsetof(struct __sk_buff, cb[0])), + BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, + offsetof(struct __sk_buff, cb[0])), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 13, 4), + BPF_MOV64_IMM(BPF_REG_3, 0), + BPF_LD_MAP_FD(BPF_REG_2, 0), + BPF_JMP_IMM(BPF_JA, 0, 0, 3), + BPF_MOV64_IMM(BPF_REG_3, 2), + BPF_LD_MAP_FD(BPF_REG_2, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call), + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .fixup_prog1 = { 5, 9 }, + .result = ACCEPT, + .retval = 42, +}, +{ + "runtime/jit: tail_call within bounds, different maps, first branch", + .insns = { + BPF_MOV64_IMM(BPF_REG_0, 13), + BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, + offsetof(struct __sk_buff, cb[0])), + BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, + offsetof(struct __sk_buff, cb[0])), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 13, 4), + BPF_MOV64_IMM(BPF_REG_3, 0), + BPF_LD_MAP_FD(BPF_REG_2, 0), + BPF_JMP_IMM(BPF_JA, 0, 0, 3), + BPF_MOV64_IMM(BPF_REG_3, 0), + BPF_LD_MAP_FD(BPF_REG_2, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call), + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .fixup_prog1 = { 5 }, + .fixup_prog2 = { 9 }, + .result_unpriv = REJECT, + .errstr_unpriv = "tail_call abusing map_ptr", + .result = ACCEPT, + .retval = 1, +}, +{ + "runtime/jit: tail_call within bounds, different maps, second branch", + .insns = { + BPF_MOV64_IMM(BPF_REG_0, 14), + BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, + offsetof(struct __sk_buff, cb[0])), + BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, + offsetof(struct __sk_buff, cb[0])), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 13, 4), + BPF_MOV64_IMM(BPF_REG_3, 0), + BPF_LD_MAP_FD(BPF_REG_2, 0), + BPF_JMP_IMM(BPF_JA, 0, 0, 3), + BPF_MOV64_IMM(BPF_REG_3, 0), + BPF_LD_MAP_FD(BPF_REG_2, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call), + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .fixup_prog1 = { 5 }, + .fixup_prog2 = { 9 }, + .result_unpriv = REJECT, + .errstr_unpriv = "tail_call abusing map_ptr", + .result = ACCEPT, + .retval = 42, +}, +{ + "runtime/jit: tail_call out of bounds", + .insns = { + BPF_MOV64_IMM(BPF_REG_3, 256), + BPF_LD_MAP_FD(BPF_REG_2, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call), + BPF_MOV64_IMM(BPF_REG_0, 2), + BPF_EXIT_INSN(), + }, + .fixup_prog1 = { 1 }, + .result = ACCEPT, + .retval = 2, +}, +{ + "runtime/jit: pass negative index to tail_call", + .insns = { + BPF_MOV64_IMM(BPF_REG_3, -1), + BPF_LD_MAP_FD(BPF_REG_2, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call), + BPF_MOV64_IMM(BPF_REG_0, 2), + BPF_EXIT_INSN(), + }, + .fixup_prog1 = { 1 }, + .result = ACCEPT, + .retval = 2, +}, +{ + "runtime/jit: pass > 32bit index to tail_call", + .insns = { + BPF_LD_IMM64(BPF_REG_3, 0x100000000ULL), + BPF_LD_MAP_FD(BPF_REG_2, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call), + BPF_MOV64_IMM(BPF_REG_0, 2), + BPF_EXIT_INSN(), + }, + .fixup_prog1 = { 2 }, + .result = ACCEPT, + .retval = 42, + /* Verifier rewrite for unpriv skips tail call here. */ + .retval_unpriv = 2, +}, |