diff options
Diffstat (limited to 'tools/testing/selftests/bpf/verifier')
| -rw-r--r-- | tools/testing/selftests/bpf/verifier/unpriv.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/verifier/unpriv.c b/tools/testing/selftests/bpf/verifier/unpriv.c index 878ca26c3f0a..af0c0f336625 100644 --- a/tools/testing/selftests/bpf/verifier/unpriv.c +++ b/tools/testing/selftests/bpf/verifier/unpriv.c @@ -240,6 +240,29 @@ .prog_type = BPF_PROG_TYPE_SCHED_CLS, }, { + /* Same as above, but use BPF_ST_MEM to save 42 + * instead of BPF_STX_MEM. + */ + "unpriv: spill/fill of different pointers st", + .insns = { + BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 3), + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -16), + BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_2, 0), + BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 1), + BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 0), + BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_6, 0), + BPF_ST_MEM(BPF_W, BPF_REG_1, offsetof(struct __sk_buff, mark), 42), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .result = REJECT, + .errstr = "same insn cannot be used with different pointers", + .prog_type = BPF_PROG_TYPE_SCHED_CLS, +}, +{ "unpriv: spill/fill of different pointers stx - ctx and sock", .insns = { BPF_MOV64_REG(BPF_REG_8, BPF_REG_1), |