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| author | Daniel Borkmann <daniel@iogearbox.net> | 2019-04-03 18:39:05 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-20 09:15:08 +0200 |
| commit | 6a42c49482db5ab565a9dabb1642ff64ae0f45b7 (patch) | |
| tree | 8e1572221b33e9ba53707cffe1099fd877262362 /include | |
| parent | 85614894812adb00ddd1eb3e4b18ddb995dd61c1 (diff) | |
| download | linux-stable-6a42c49482db5ab565a9dabb1642ff64ae0f45b7.tar.gz linux-stable-6a42c49482db5ab565a9dabb1642ff64ae0f45b7.tar.bz2 linux-stable-6a42c49482db5ab565a9dabb1642ff64ae0f45b7.zip | |
bpf: move {prev_,}insn_idx into verifier env
commit c08435ec7f2bc8f4109401f696fd55159b4b40cb upstream.
Move prev_insn_idx and insn_idx from the do_check() function into
the verifier environment, so they can be read inside the various
helper functions for handling the instructions. It's easier to put
this into the environment rather than changing all call-sites only
to pass it along. insn_idx is useful in particular since this later
on allows to hold state in env->insn_aux_data[env->insn_idx].
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Vallish Vaidyeshwara <vallish@amazon.com>
[Backported to 4.14 by sblbir]
Signed-off-by: Balbir Singh <sblbir@amzn.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/bpf_verifier.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/bpf_verifier.h b/include/linux/bpf_verifier.h index 0fc3d9afb8bf..3149a01d0f58 100644 --- a/include/linux/bpf_verifier.h +++ b/include/linux/bpf_verifier.h @@ -134,6 +134,8 @@ struct bpf_ext_analyzer_ops { * one verifier_env per bpf_check() call */ struct bpf_verifier_env { + u32 insn_idx; + u32 prev_insn_idx; struct bpf_prog *prog; /* eBPF program being verified */ struct bpf_verifier_stack_elem *head; /* stack of verifier states to be processed */ int stack_size; /* number of states to be processed */ |