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| author | Daniel Borkmann <daniel@iogearbox.net> | 2017-05-25 01:05:09 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-05-25 13:44:28 -0400 |
| commit | 614d0d77b49a9b131e58b77473698ab5b2c525b7 (patch) | |
| tree | 0dc8e1e5384df1cdadfb109bbd191eafe24a594d /include/linux/filter.h | |
| parent | a316338cb71a3260201490e615f2f6d5c0d8fb2c (diff) | |
| download | lwn-614d0d77b49a9b131e58b77473698ab5b2c525b7.tar.gz lwn-614d0d77b49a9b131e58b77473698ab5b2c525b7.zip | |
bpf: add various verifier test cases
This patch adds various verifier test cases:
1) A test case for the pruning issue when tracking alignment
is used.
2) Various PTR_TO_MAP_VALUE_OR_NULL tests to make sure pointer
arithmetic turns such register into UNKNOWN_VALUE type.
3) Test cases for the special treatment of LD_ABS/LD_IND to
make sure verifier doesn't break calling convention here.
Latter is needed, since f.e. arm64 JIT uses r1 - r5 for
storing temporary data, so they really must be marked as
NOT_INIT.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/filter.h')
| -rw-r--r-- | include/linux/filter.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/filter.h b/include/linux/filter.h index 56197f82af45..62d948f80730 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -272,6 +272,16 @@ struct bpf_prog_aux; .off = OFF, \ .imm = IMM }) +/* Unconditional jumps, goto pc + off16 */ + +#define BPF_JMP_A(OFF) \ + ((struct bpf_insn) { \ + .code = BPF_JMP | BPF_JA, \ + .dst_reg = 0, \ + .src_reg = 0, \ + .off = OFF, \ + .imm = 0 }) + /* Function call */ #define BPF_EMIT_CALL(FUNC) \ |