diff options
Diffstat (limited to 'include/linux/bpf_verifier.h')
| -rw-r--r-- | include/linux/bpf_verifier.h | 40 |
1 files changed, 20 insertions, 20 deletions
diff --git a/include/linux/bpf_verifier.h b/include/linux/bpf_verifier.h index 53d175cbaa02..127058cfec47 100644 --- a/include/linux/bpf_verifier.h +++ b/include/linux/bpf_verifier.h @@ -92,6 +92,26 @@ struct bpf_reg_state { u32 subprogno; /* for PTR_TO_FUNC */ }; + /* For scalar types (SCALAR_VALUE), this represents our knowledge of + * the actual value. + * For pointer types, this represents the variable part of the offset + * from the pointed-to object, and is shared with all bpf_reg_states + * with the same id as us. + */ + struct tnum var_off; + /* Used to determine if any memory access using this register will + * result in a bad access. + * These refer to the same value as var_off, not necessarily the actual + * contents of the register. + */ + s64 smin_value; /* minimum possible (s64)value */ + s64 smax_value; /* maximum possible (s64)value */ + u64 umin_value; /* minimum possible (u64)value */ + u64 umax_value; /* maximum possible (u64)value */ + s32 s32_min_value; /* minimum possible (s32)value */ + s32 s32_max_value; /* maximum possible (s32)value */ + u32 u32_min_value; /* minimum possible (u32)value */ + u32 u32_max_value; /* maximum possible (u32)value */ /* For PTR_TO_PACKET, used to find other pointers with the same variable * offset, so they can share range knowledge. * For PTR_TO_MAP_VALUE_OR_NULL this is used to share which map value we @@ -144,26 +164,6 @@ struct bpf_reg_state { * allowed and has the same effect as bpf_sk_release(sk). */ u32 ref_obj_id; - /* For scalar types (SCALAR_VALUE), this represents our knowledge of - * the actual value. - * For pointer types, this represents the variable part of the offset - * from the pointed-to object, and is shared with all bpf_reg_states - * with the same id as us. - */ - struct tnum var_off; - /* Used to determine if any memory access using this register will - * result in a bad access. - * These refer to the same value as var_off, not necessarily the actual - * contents of the register. - */ - s64 smin_value; /* minimum possible (s64)value */ - s64 smax_value; /* maximum possible (s64)value */ - u64 umin_value; /* minimum possible (u64)value */ - u64 umax_value; /* maximum possible (u64)value */ - s32 s32_min_value; /* minimum possible (s32)value */ - s32 s32_max_value; /* maximum possible (s32)value */ - u32 u32_min_value; /* minimum possible (u32)value */ - u32 u32_max_value; /* maximum possible (u32)value */ /* parentage chain for liveness checking */ struct bpf_reg_state *parent; /* Inside the callee two registers can be both PTR_TO_STACK like |