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| author | Jakub Kicinski | 2019-01-26 00:24:44 +0100 |
|---|---|---|
| committer | Alexei Starovoitov | 2019-01-28 06:37:45 +0100 |
| commit | 48729226238d4d56bdb8de9d54b911f179dd54b7 (patch) | |
| tree | e90c7ee9b0cdb7eb51de8544f2ee80ddc4715aae /tools/testing/selftests/bpf/verifier/ctx.c | |
| parent | selftests: bpf: break up test_verifier (diff) | |
| download | kernel-qcow2-linux-48729226238d4d56bdb8de9d54b911f179dd54b7.tar.gz kernel-qcow2-linux-48729226238d4d56bdb8de9d54b911f179dd54b7.tar.xz kernel-qcow2-linux-48729226238d4d56bdb8de9d54b911f179dd54b7.zip | |
selftests: bpf: break up the rest of test_verifier
Break up the rest of test_verifier tests into separate
files.
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/ctx.c')
| -rw-r--r-- | tools/testing/selftests/bpf/verifier/ctx.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/verifier/ctx.c b/tools/testing/selftests/bpf/verifier/ctx.c index 0d623af34471..92762c08f5e3 100644 --- a/tools/testing/selftests/bpf/verifier/ctx.c +++ b/tools/testing/selftests/bpf/verifier/ctx.c @@ -21,3 +21,73 @@ .result = REJECT, .prog_type = BPF_PROG_TYPE_SCHED_CLS, }, +{ + "arithmetic ops make PTR_TO_CTX unusable", + .insns = { + BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, + offsetof(struct __sk_buff, data) - + offsetof(struct __sk_buff, mark)), + BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, + offsetof(struct __sk_buff, mark)), + BPF_EXIT_INSN(), + }, + .errstr = "dereference of modified ctx ptr", + .result = REJECT, + .prog_type = BPF_PROG_TYPE_SCHED_CLS, +}, +{ + "pass unmodified ctx pointer to helper", + .insns = { + BPF_MOV64_IMM(BPF_REG_2, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, + BPF_FUNC_csum_update), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .prog_type = BPF_PROG_TYPE_SCHED_CLS, + .result = ACCEPT, +}, +{ + "pass modified ctx pointer to helper, 1", + .insns = { + BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -612), + BPF_MOV64_IMM(BPF_REG_2, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, + BPF_FUNC_csum_update), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .prog_type = BPF_PROG_TYPE_SCHED_CLS, + .result = REJECT, + .errstr = "dereference of modified ctx ptr", +}, +{ + "pass modified ctx pointer to helper, 2", + .insns = { + BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -612), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, + BPF_FUNC_get_socket_cookie), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .result_unpriv = REJECT, + .result = REJECT, + .errstr_unpriv = "dereference of modified ctx ptr", + .errstr = "dereference of modified ctx ptr", +}, +{ + "pass modified ctx pointer to helper, 3", + .insns = { + BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1, 0), + BPF_ALU64_IMM(BPF_AND, BPF_REG_3, 4), + BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_3), + BPF_MOV64_IMM(BPF_REG_2, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, + BPF_FUNC_csum_update), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .prog_type = BPF_PROG_TYPE_SCHED_CLS, + .result = REJECT, + .errstr = "variable ctx access var_off=(0x0; 0x4)", +}, |