diff options
Diffstat (limited to '')
| -rw-r--r-- | tools/testing/selftests/bpf/verifier/and.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/tools/testing/selftests/bpf/verifier/and.c b/tools/testing/selftests/bpf/verifier/and.c index e0fad1548737..7d7ebee5cc7a 100644 --- a/tools/testing/selftests/bpf/verifier/and.c +++ b/tools/testing/selftests/bpf/verifier/and.c @@ -15,7 +15,7 @@ BPF_EXIT_INSN(), }, .fixup_map_hash_48b = { 3 }, - .errstr = "R0 max value is outside of the array range", + .errstr = "R0 max value is outside of the allowed memory range", .result = REJECT, .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, }, @@ -44,7 +44,25 @@ BPF_EXIT_INSN(), }, .fixup_map_hash_48b = { 3 }, - .errstr = "R0 max value is outside of the array range", + .errstr = "R0 max value is outside of the allowed memory range", .result = REJECT, .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, }, +{ + "check known subreg with unknown reg", + .insns = { + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32), + BPF_ALU64_IMM(BPF_LSH, BPF_REG_0, 32), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 1), + BPF_ALU64_IMM(BPF_AND, BPF_REG_0, 0xFFFF1234), + /* Upper bits are unknown but AND above masks out 1 zero'ing lower bits */ + BPF_JMP32_IMM(BPF_JLT, BPF_REG_0, 1, 1), + BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_1, 512), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .errstr_unpriv = "R1 !read_ok", + .result_unpriv = REJECT, + .result = ACCEPT, + .retval = 0 +}, |