diff options
| author | Jakub Kicinski <jakub.kicinski@netronome.com> | 2019-01-25 15:24:43 -0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2019-01-27 21:37:45 -0800 |
| commit | 40f2fbd5a5e9c6d0799632fcba174a7b45c471da (patch) | |
| tree | a2a70957c9a979dc1f6d82eada377f9402865f5f /tools/testing/selftests/bpf/verifier/map_ret_val.c | |
| parent | 2dfb40121ee83139909e4e17d414eee87897bb8e (diff) | |
selftests: bpf: break up test_verifier
Break up the first 10 kLoC of test verifier test cases
out into smaller files. Looks like git line counting
gets a little flismy above 16 bit integers, so we need
two commits to break up test_verifier.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf/verifier/map_ret_val.c')
| -rw-r--r-- | tools/testing/selftests/bpf/verifier/map_ret_val.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/verifier/map_ret_val.c b/tools/testing/selftests/bpf/verifier/map_ret_val.c new file mode 100644 index 000000000000..bdd0e8d18333 --- /dev/null +++ b/tools/testing/selftests/bpf/verifier/map_ret_val.c @@ -0,0 +1,65 @@ +{ + "invalid map_fd for function call", + .insns = { + BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), + BPF_ALU64_REG(BPF_MOV, BPF_REG_2, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), + BPF_LD_MAP_FD(BPF_REG_1, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_delete_elem), + BPF_EXIT_INSN(), + }, + .errstr = "fd 0 is not pointing to valid bpf_map", + .result = REJECT, +}, +{ + "don't check return value before access", + .insns = { + BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), + BPF_LD_MAP_FD(BPF_REG_1, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), + BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 0), + BPF_EXIT_INSN(), + }, + .fixup_map_hash_8b = { 3 }, + .errstr = "R0 invalid mem access 'map_value_or_null'", + .result = REJECT, +}, +{ + "access memory with incorrect alignment", + .insns = { + BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), + BPF_LD_MAP_FD(BPF_REG_1, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1), + BPF_ST_MEM(BPF_DW, BPF_REG_0, 4, 0), + BPF_EXIT_INSN(), + }, + .fixup_map_hash_8b = { 3 }, + .errstr = "misaligned value access", + .result = REJECT, + .flags = F_LOAD_WITH_STRICT_ALIGNMENT, +}, +{ + "sometimes access memory with incorrect alignment", + .insns = { + BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), + BPF_LD_MAP_FD(BPF_REG_1, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2), + BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 0), + BPF_EXIT_INSN(), + BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 1), + BPF_EXIT_INSN(), + }, + .fixup_map_hash_8b = { 3 }, + .errstr = "R0 invalid mem access", + .errstr_unpriv = "R0 leaks addr", + .result = REJECT, + .flags = F_LOAD_WITH_STRICT_ALIGNMENT, +}, |