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-rw-r--r--kernel/bpf/disasm.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/kernel/bpf/disasm.c b/kernel/bpf/disasm.c
index 49940c26a2..bd2e2dd047 100644
--- a/kernel/bpf/disasm.c
+++ b/kernel/bpf/disasm.c
@@ -166,6 +166,12 @@ static bool is_movsx(const struct bpf_insn *insn)
(insn->off == 8 || insn->off == 16 || insn->off == 32);
}
+static bool is_addr_space_cast(const struct bpf_insn *insn)
+{
+ return insn->code == (BPF_ALU64 | BPF_MOV | BPF_X) &&
+ insn->off == BPF_ADDR_SPACE_CAST;
+}
+
void print_bpf_insn(const struct bpf_insn_cbs *cbs,
const struct bpf_insn *insn,
bool allow_ptr_leaks)
@@ -184,6 +190,10 @@ void print_bpf_insn(const struct bpf_insn_cbs *cbs,
insn->code, class == BPF_ALU ? 'w' : 'r',
insn->dst_reg, class == BPF_ALU ? 'w' : 'r',
insn->dst_reg);
+ } else if (is_addr_space_cast(insn)) {
+ verbose(cbs->private_data, "(%02x) r%d = addr_space_cast(r%d, %d, %d)\n",
+ insn->code, insn->dst_reg,
+ insn->src_reg, ((u32)insn->imm) >> 16, (u16)insn->imm);
} else if (BPF_SRC(insn->code) == BPF_X) {
verbose(cbs->private_data, "(%02x) %c%d %s %s%c%d\n",
insn->code, class == BPF_ALU ? 'w' : 'r',
@@ -322,6 +332,10 @@ void print_bpf_insn(const struct bpf_insn_cbs *cbs,
} else if (insn->code == (BPF_JMP | BPF_JA)) {
verbose(cbs->private_data, "(%02x) goto pc%+d\n",
insn->code, insn->off);
+ } else if (insn->code == (BPF_JMP | BPF_JCOND) &&
+ insn->src_reg == BPF_MAY_GOTO) {
+ verbose(cbs->private_data, "(%02x) may_goto pc%+d\n",
+ insn->code, insn->off);
} else if (insn->code == (BPF_JMP32 | BPF_JA)) {
verbose(cbs->private_data, "(%02x) gotol pc%+d\n",
insn->code, insn->imm);