[linux-2.6-block.git] / kernel / bpf / disasm.c

// SPDX-License-Identifier: GPL-2.0-only
/* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
 * Copyright (c) 2016 Facebook
 */

#include <linux/bpf.h>

#include "disasm.h"

#define __BPF_FUNC_STR_FN(x) [BPF_FUNC_ ## x] = __stringify(bpf_ ## x)
static const char * const func_id_str[] = {
	__BPF_FUNC_MAPPER(__BPF_FUNC_STR_FN)
};
#undef __BPF_FUNC_STR_FN

static const char *__func_get_name(const struct bpf_insn_cbs *cbs,
				   const struct bpf_insn *insn,
				   char *buff, size_t len)
{
	BUILD_BUG_ON(ARRAY_SIZE(func_id_str) != __BPF_FUNC_MAX_ID);

	if (insn->src_reg != BPF_PSEUDO_CALL &&
	    insn->imm >= 0 && insn->imm < __BPF_FUNC_MAX_ID &&
	    func_id_str[insn->imm])
		return func_id_str[insn->imm];

	if (cbs && cbs->cb_call)
		return cbs->cb_call(cbs->private_data, insn);

	if (insn->src_reg == BPF_PSEUDO_CALL)
		snprintf(buff, len, "%+d", insn->imm);

	return buff;
}

static const char *__func_imm_name(const struct bpf_insn_cbs *cbs,
				   const struct bpf_insn *insn,
				   u64 full_imm, char *buff, size_t len)
{
	if (cbs && cbs->cb_imm)
		return cbs->cb_imm(cbs->private_data, insn, full_imm);

	snprintf(buff, len, "0x%llx", (unsigned long long)full_imm);
	return buff;
}

const char *func_id_name(int id)
{
	if (id >= 0 && id < __BPF_FUNC_MAX_ID && func_id_str[id])
		return func_id_str[id];
	else
		return "unknown";
}

const char *const bpf_class_string[8] = {
	[BPF_LD]    = "ld",
	[BPF_LDX]   = "ldx",
	[BPF_ST]    = "st",
	[BPF_STX]   = "stx",
	[BPF_ALU]   = "alu",
	[BPF_JMP]   = "jmp",
	[BPF_JMP32] = "jmp32",
	[BPF_ALU64] = "alu64",
};

const char *const bpf_alu_string[16] = {
	[BPF_ADD >> 4]  = "+=",
	[BPF_SUB >> 4]  = "-=",
	[BPF_MUL >> 4]  = "*=",
	[BPF_DIV >> 4]  = "/=",
	[BPF_OR  >> 4]  = "|=",
	[BPF_AND >> 4]  = "&=",
	[BPF_LSH >> 4]  = "<<=",
	[BPF_RSH >> 4]  = ">>=",
	[BPF_NEG >> 4]  = "neg",
	[BPF_MOD >> 4]  = "%=",
	[BPF_XOR >> 4]  = "^=",
	[BPF_MOV >> 4]  = "=",
	[BPF_ARSH >> 4] = "s>>=",
	[BPF_END >> 4]  = "endian",
};

static const char *const bpf_ldst_string[] = {
	[BPF_W >> 3]  = "u32",
	[BPF_H >> 3]  = "u16",
	[BPF_B >> 3]  = "u8",
	[BPF_DW >> 3] = "u64",
};

static const char *const bpf_jmp_string[16] = {
	[BPF_JA >> 4]   = "jmp",
	[BPF_JEQ >> 4]  = "==",
	[BPF_JGT >> 4]  = ">",
	[BPF_JLT >> 4]  = "<",
	[BPF_JGE >> 4]  = ">=",
	[BPF_JLE >> 4]  = "<=",
	[BPF_JSET >> 4] = "&",
	[BPF_JNE >> 4]  = "!=",
	[BPF_JSGT >> 4] = "s>",
	[BPF_JSLT >> 4] = "s<",
	[BPF_JSGE >> 4] = "s>=",
	[BPF_JSLE >> 4] = "s<=",
	[BPF_CALL >> 4] = "call",
	[BPF_EXIT >> 4] = "exit",
};

static void print_bpf_end_insn(bpf_insn_print_t verbose,
			       void *private_data,
			       const struct bpf_insn *insn)
{
	verbose(private_data, "(%02x) r%d = %s%d r%d\n",
		insn->code, insn->dst_reg,
		BPF_SRC(insn->code) == BPF_TO_BE ? "be" : "le",
		insn->imm, insn->dst_reg);
}

void print_bpf_insn(const struct bpf_insn_cbs *cbs,
		    const struct bpf_insn *insn,
		    bool allow_ptr_leaks)
{
	const bpf_insn_print_t verbose = cbs->cb_print;
	u8 class = BPF_CLASS(insn->code);

	if (class == BPF_ALU || class == BPF_ALU64) {
		if (BPF_OP(insn->code) == BPF_END) {
			if (class == BPF_ALU64)
				verbose(cbs->private_data, "BUG_alu64_%02x\n", insn->code);
			else
				print_bpf_end_insn(verbose, cbs->private_data, insn);
		} else if (BPF_OP(insn->code) == BPF_NEG) {
			verbose(cbs->private_data, "(%02x) %c%d = -%c%d\n",
				insn->code, class == BPF_ALU ? 'w' : 'r',
				insn->dst_reg, class == BPF_ALU ? 'w' : 'r',
				insn->dst_reg);
		} else if (BPF_SRC(insn->code) == BPF_X) {
			verbose(cbs->private_data, "(%02x) %c%d %s %c%d\n",
				insn->code, class == BPF_ALU ? 'w' : 'r',
				insn->dst_reg,
				bpf_alu_string[BPF_OP(insn->code) >> 4],
				class == BPF_ALU ? 'w' : 'r',
				insn->src_reg);
		} else {
			verbose(cbs->private_data, "(%02x) %c%d %s %d\n",
				insn->code, class == BPF_ALU ? 'w' : 'r',
				insn->dst_reg,
				bpf_alu_string[BPF_OP(insn->code) >> 4],
				insn->imm);
		}
	} else if (class == BPF_STX) {
		if (BPF_MODE(insn->code) == BPF_MEM)
			verbose(cbs->private_data, "(%02x) *(%s *)(r%d %+d) = r%d\n",
				insn->code,
				bpf_ldst_string[BPF_SIZE(insn->code) >> 3],
				insn->dst_reg,
				insn->off, insn->src_reg);
		else if (BPF_MODE(insn->code) == BPF_XADD)
			verbose(cbs->private_data, "(%02x) lock *(%s *)(r%d %+d) += r%d\n",
				insn->code,
				bpf_ldst_string[BPF_SIZE(insn->code) >> 3],
				insn->dst_reg, insn->off,
				insn->src_reg);
		else
			verbose(cbs->private_data, "BUG_%02x\n", insn->code);
	} else if (class == BPF_ST) {
		if (BPF_MODE(insn->code) != BPF_MEM) {
			verbose(cbs->private_data, "BUG_st_%02x\n", insn->code);
			return;
		}
		verbose(cbs->private_data, "(%02x) *(%s *)(r%d %+d) = %d\n",
			insn->code,
			bpf_ldst_string[BPF_SIZE(insn->code) >> 3],
			insn->dst_reg,
			insn->off, insn->imm);
	} else if (class == BPF_LDX) {
		if (BPF_MODE(insn->code) != BPF_MEM) {
			verbose(cbs->private_data, "BUG_ldx_%02x\n", insn->code);
			return;
		}
		verbose(cbs->private_data, "(%02x) r%d = *(%s *)(r%d %+d)\n",
			insn->code, insn->dst_reg,
			bpf_ldst_string[BPF_SIZE(insn->code) >> 3],
			insn->src_reg, insn->off);
	} else if (class == BPF_LD) {
		if (BPF_MODE(insn->code) == BPF_ABS) {
			verbose(cbs->private_data, "(%02x) r0 = *(%s *)skb[%d]\n",
				insn->code,
				bpf_ldst_string[BPF_SIZE(insn->code) >> 3],
				insn->imm);
		} else if (BPF_MODE(insn->code) == BPF_IND) {
			verbose(cbs->private_data, "(%02x) r0 = *(%s *)skb[r%d + %d]\n",
				insn->code,
				bpf_ldst_string[BPF_SIZE(insn->code) >> 3],
				insn->src_reg, insn->imm);
		} else if (BPF_MODE(insn->code) == BPF_IMM &&
			   BPF_SIZE(insn->code) == BPF_DW) {
			/* At this point, we already made sure that the second
			 * part of the ldimm64 insn is accessible.
			 */
			u64 imm = ((u64)(insn + 1)->imm << 32) | (u32)insn->imm;
			bool is_ptr = insn->src_reg == BPF_PSEUDO_MAP_FD ||
				      insn->src_reg == BPF_PSEUDO_MAP_VALUE;
			char tmp[64];

			if (is_ptr && !allow_ptr_leaks)
				imm = 0;

			verbose(cbs->private_data, "(%02x) r%d = %s\n",
				insn->code, insn->dst_reg,
				__func_imm_name(cbs, insn, imm,
						tmp, sizeof(tmp)));
		} else {
			verbose(cbs->private_data, "BUG_ld_%02x\n", insn->code);
			return;
		}
	} else if (class == BPF_JMP32 || class == BPF_JMP) {
		u8 opcode = BPF_OP(insn->code);

		if (opcode == BPF_CALL) {
			char tmp[64];

			if (insn->src_reg == BPF_PSEUDO_CALL) {
				verbose(cbs->private_data, "(%02x) call pc%s\n",
					insn->code,
					__func_get_name(cbs, insn,
							tmp, sizeof(tmp)));
			} else {
				strcpy(tmp, "unknown");
				verbose(cbs->private_data, "(%02x) call %s#%d\n", insn->code,
					__func_get_name(cbs, insn,
							tmp, sizeof(tmp)),
					insn->imm);
			}
		} 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_EXIT)) {
			verbose(cbs->private_data, "(%02x) exit\n", insn->code);
		} else if (BPF_SRC(insn->code) == BPF_X) {
			verbose(cbs->private_data,
				"(%02x) if %c%d %s %c%d goto pc%+d\n",
				insn->code, class == BPF_JMP32 ? 'w' : 'r',
				insn->dst_reg,
				bpf_jmp_string[BPF_OP(insn->code) >> 4],
				class == BPF_JMP32 ? 'w' : 'r',
				insn->src_reg, insn->off);
		} else {
			verbose(cbs->private_data,
				"(%02x) if %c%d %s 0x%x goto pc%+d\n",
				insn->code, class == BPF_JMP32 ? 'w' : 'r',
				insn->dst_reg,
				bpf_jmp_string[BPF_OP(insn->code) >> 4],
				insn->imm, insn->off);
		}
	} else {
		verbose(cbs->private_data, "(%02x) %s\n",
			insn->code, bpf_class_string[class]);
	}
}
Commit	Line	Data
5b497af4	1	// SPDX-License-Identifier: GPL-2.0-only
f4ac7e0b JK	2	/* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
f4ac7e0b JK	3	* Copyright (c) 2016 Facebook
f4ac7e0b JK	4	*/
	5
	6	#include <linux/bpf.h>
	7
	8	#include "disasm.h"
	9
	10	#define __BPF_FUNC_STR_FN(x) [BPF_FUNC_ ## x] = __stringify(bpf_ ## x)
	11	static const char * const func_id_str[] = {
	12	__BPF_FUNC_MAPPER(__BPF_FUNC_STR_FN)
	13	};
	14	#undef __BPF_FUNC_STR_FN
	15
7105e828 DB	16	static const char __func_get_name(const struct bpf_insn_cbs cbs,
	17	const struct bpf_insn *insn,
	18	char *buff, size_t len)
f4ac7e0b JK	19	{
	20	BUILD_BUG_ON(ARRAY_SIZE(func_id_str) != __BPF_FUNC_MAX_ID);
	21
7105e828 DB	22	if (insn->src_reg != BPF_PSEUDO_CALL &&
	23	insn->imm >= 0 && insn->imm < __BPF_FUNC_MAX_ID &&
	24	func_id_str[insn->imm])
	25	return func_id_str[insn->imm];
	26
	27	if (cbs && cbs->cb_call)
	28	return cbs->cb_call(cbs->private_data, insn);
	29
	30	if (insn->src_reg == BPF_PSEUDO_CALL)
	31	snprintf(buff, len, "%+d", insn->imm);
	32
	33	return buff;
	34	}
	35
	36	static const char __func_imm_name(const struct bpf_insn_cbs cbs,
	37	const struct bpf_insn *insn,
	38	u64 full_imm, char *buff, size_t len)
	39	{
	40	if (cbs && cbs->cb_imm)
	41	return cbs->cb_imm(cbs->private_data, insn, full_imm);
	42
	43	snprintf(buff, len, "0x%llx", (unsigned long long)full_imm);
	44	return buff;
	45	}
	46
	47	const char *func_id_name(int id)
	48	{
f4ac7e0b JK	49	if (id >= 0 && id < __BPF_FUNC_MAX_ID && func_id_str[id])
	50	return func_id_str[id];
	51	else
	52	return "unknown";
	53	}
	54
	55	const char *const bpf_class_string[8] = {
	56	[BPF_LD] = "ld",
	57	[BPF_LDX] = "ldx",
	58	[BPF_ST] = "st",
	59	[BPF_STX] = "stx",
	60	[BPF_ALU] = "alu",
	61	[BPF_JMP] = "jmp",
56cbd82e	62	[BPF_JMP32] = "jmp32",
f4ac7e0b JK	63	[BPF_ALU64] = "alu64",
	64	};
	65
	66	const char *const bpf_alu_string[16] = {
	67	[BPF_ADD >> 4] = "+=",
	68	[BPF_SUB >> 4] = "-=",
	69	[BPF_MUL >> 4] = "*=",
	70	[BPF_DIV >> 4] = "/=",
	71	[BPF_OR >> 4] = "\|=",
	72	[BPF_AND >> 4] = "&=",
	73	[BPF_LSH >> 4] = "<<=",
	74	[BPF_RSH >> 4] = ">>=",
	75	[BPF_NEG >> 4] = "neg",
	76	[BPF_MOD >> 4] = "%=",
	77	[BPF_XOR >> 4] = "^=",
	78	[BPF_MOV >> 4] = "=",
	79	[BPF_ARSH >> 4] = "s>>=",
	80	[BPF_END >> 4] = "endian",
	81	};
	82
	83	static const char *const bpf_ldst_string[] = {
	84	[BPF_W >> 3] = "u32",
	85	[BPF_H >> 3] = "u16",
	86	[BPF_B >> 3] = "u8",
	87	[BPF_DW >> 3] = "u64",
	88	};
	89
	90	static const char *const bpf_jmp_string[16] = {
	91	[BPF_JA >> 4] = "jmp",
	92	[BPF_JEQ >> 4] = "==",
	93	[BPF_JGT >> 4] = ">",
	94	[BPF_JLT >> 4] = "<",
	95	[BPF_JGE >> 4] = ">=",
	96	[BPF_JLE >> 4] = "<=",
	97	[BPF_JSET >> 4] = "&",
	98	[BPF_JNE >> 4] = "!=",
	99	[BPF_JSGT >> 4] = "s>",
	100	[BPF_JSLT >> 4] = "s<",
	101	[BPF_JSGE >> 4] = "s>=",
	102	[BPF_JSLE >> 4] = "s<=",
	103	[BPF_CALL >> 4] = "call",
	104	[BPF_EXIT >> 4] = "exit",
	105	};
	106
7105e828	107	static void print_bpf_end_insn(bpf_insn_print_t verbose,
abe08840	108	void *private_data,
f4ac7e0b JK	109	const struct bpf_insn *insn)
f4ac7e0b JK	110	{
abe08840 JO	111	verbose(private_data, "(%02x) r%d = %s%d r%d\n",
abe08840 JO	112	insn->code, insn->dst_reg,
f4ac7e0b JK	113	BPF_SRC(insn->code) == BPF_TO_BE ? "be" : "le",
	114	insn->imm, insn->dst_reg);
	115	}
	116
7105e828	117	void print_bpf_insn(const struct bpf_insn_cbs *cbs,
7105e828 DB	118	const struct bpf_insn *insn,
7105e828 DB	119	bool allow_ptr_leaks)
f4ac7e0b	120	{
7105e828	121	const bpf_insn_print_t verbose = cbs->cb_print;
f4ac7e0b JK	122	u8 class = BPF_CLASS(insn->code);
	123
	124	if (class == BPF_ALU \|\| class == BPF_ALU64) {
	125	if (BPF_OP(insn->code) == BPF_END) {
	126	if (class == BPF_ALU64)
abe08840	127	verbose(cbs->private_data, "BUG_alu64_%02x\n", insn->code);
f4ac7e0b	128	else
abe08840	129	print_bpf_end_insn(verbose, cbs->private_data, insn);
f4ac7e0b	130	} else if (BPF_OP(insn->code) == BPF_NEG) {
56cbd82e JW	131	verbose(cbs->private_data, "(%02x) %c%d = -%c%d\n",
	132	insn->code, class == BPF_ALU ? 'w' : 'r',
	133	insn->dst_reg, class == BPF_ALU ? 'w' : 'r',
f4ac7e0b JK	134	insn->dst_reg);
f4ac7e0b JK	135	} else if (BPF_SRC(insn->code) == BPF_X) {
56cbd82e JW	136	verbose(cbs->private_data, "(%02x) %c%d %s %c%d\n",
56cbd82e JW	137	insn->code, class == BPF_ALU ? 'w' : 'r',
f4ac7e0b JK	138	insn->dst_reg,
f4ac7e0b JK	139	bpf_alu_string[BPF_OP(insn->code) >> 4],
56cbd82e	140	class == BPF_ALU ? 'w' : 'r',
f4ac7e0b JK	141	insn->src_reg);
f4ac7e0b JK	142	} else {
56cbd82e JW	143	verbose(cbs->private_data, "(%02x) %c%d %s %d\n",
56cbd82e JW	144	insn->code, class == BPF_ALU ? 'w' : 'r',
f4ac7e0b JK	145	insn->dst_reg,
f4ac7e0b JK	146	bpf_alu_string[BPF_OP(insn->code) >> 4],
f4ac7e0b JK	147	insn->imm);
	148	}
	149	} else if (class == BPF_STX) {
	150	if (BPF_MODE(insn->code) == BPF_MEM)
abe08840	151	verbose(cbs->private_data, "(%02x) (%s )(r%d %+d) = r%d\n",
f4ac7e0b JK	152	insn->code,
	153	bpf_ldst_string[BPF_SIZE(insn->code) >> 3],
	154	insn->dst_reg,
	155	insn->off, insn->src_reg);
	156	else if (BPF_MODE(insn->code) == BPF_XADD)
abe08840	157	verbose(cbs->private_data, "(%02x) lock (%s )(r%d %+d) += r%d\n",
f4ac7e0b JK	158	insn->code,
	159	bpf_ldst_string[BPF_SIZE(insn->code) >> 3],
	160	insn->dst_reg, insn->off,
	161	insn->src_reg);
	162	else
abe08840	163	verbose(cbs->private_data, "BUG_%02x\n", insn->code);
f4ac7e0b JK	164	} else if (class == BPF_ST) {
f4ac7e0b JK	165	if (BPF_MODE(insn->code) != BPF_MEM) {
abe08840	166	verbose(cbs->private_data, "BUG_st_%02x\n", insn->code);
f4ac7e0b JK	167	return;
f4ac7e0b JK	168	}
abe08840	169	verbose(cbs->private_data, "(%02x) (%s )(r%d %+d) = %d\n",
f4ac7e0b JK	170	insn->code,
	171	bpf_ldst_string[BPF_SIZE(insn->code) >> 3],
	172	insn->dst_reg,
	173	insn->off, insn->imm);
	174	} else if (class == BPF_LDX) {
	175	if (BPF_MODE(insn->code) != BPF_MEM) {
abe08840	176	verbose(cbs->private_data, "BUG_ldx_%02x\n", insn->code);
f4ac7e0b JK	177	return;
f4ac7e0b JK	178	}
abe08840	179	verbose(cbs->private_data, "(%02x) r%d = (%s )(r%d %+d)\n",
f4ac7e0b JK	180	insn->code, insn->dst_reg,
	181	bpf_ldst_string[BPF_SIZE(insn->code) >> 3],
	182	insn->src_reg, insn->off);
	183	} else if (class == BPF_LD) {
	184	if (BPF_MODE(insn->code) == BPF_ABS) {
abe08840	185	verbose(cbs->private_data, "(%02x) r0 = (%s )skb[%d]\n",
f4ac7e0b JK	186	insn->code,
	187	bpf_ldst_string[BPF_SIZE(insn->code) >> 3],
	188	insn->imm);
	189	} else if (BPF_MODE(insn->code) == BPF_IND) {
abe08840	190	verbose(cbs->private_data, "(%02x) r0 = (%s )skb[r%d + %d]\n",
f4ac7e0b JK	191	insn->code,
	192	bpf_ldst_string[BPF_SIZE(insn->code) >> 3],
	193	insn->src_reg, insn->imm);
	194	} else if (BPF_MODE(insn->code) == BPF_IMM &&
	195	BPF_SIZE(insn->code) == BPF_DW) {
	196	/* At this point, we already made sure that the second
	197	* part of the ldimm64 insn is accessible.
	198	*/
	199	u64 imm = ((u64)(insn + 1)->imm << 32) \| (u32)insn->imm;
d8eca5bb DB	200	bool is_ptr = insn->src_reg == BPF_PSEUDO_MAP_FD \|\|
d8eca5bb DB	201	insn->src_reg == BPF_PSEUDO_MAP_VALUE;
7105e828	202	char tmp[64];
f4ac7e0b	203
d8eca5bb	204	if (is_ptr && !allow_ptr_leaks)
f4ac7e0b JK	205	imm = 0;
f4ac7e0b JK	206
abe08840	207	verbose(cbs->private_data, "(%02x) r%d = %s\n",
7105e828 DB	208	insn->code, insn->dst_reg,
	209	__func_imm_name(cbs, insn, imm,
	210	tmp, sizeof(tmp)));
f4ac7e0b	211	} else {
abe08840	212	verbose(cbs->private_data, "BUG_ld_%02x\n", insn->code);
f4ac7e0b JK	213	return;
f4ac7e0b JK	214	}
56cbd82e	215	} else if (class == BPF_JMP32 \|\| class == BPF_JMP) {
f4ac7e0b JK	216	u8 opcode = BPF_OP(insn->code);
	217
	218	if (opcode == BPF_CALL) {
7105e828 DB	219	char tmp[64];
	220
	221	if (insn->src_reg == BPF_PSEUDO_CALL) {
abe08840	222	verbose(cbs->private_data, "(%02x) call pc%s\n",
7105e828 DB	223	insn->code,
	224	__func_get_name(cbs, insn,
	225	tmp, sizeof(tmp)));
	226	} else {
	227	strcpy(tmp, "unknown");
abe08840	228	verbose(cbs->private_data, "(%02x) call %s#%d\n", insn->code,
7105e828 DB	229	__func_get_name(cbs, insn,
	230	tmp, sizeof(tmp)),
	231	insn->imm);
	232	}
f4ac7e0b	233	} else if (insn->code == (BPF_JMP \| BPF_JA)) {
abe08840	234	verbose(cbs->private_data, "(%02x) goto pc%+d\n",
f4ac7e0b JK	235	insn->code, insn->off);
f4ac7e0b JK	236	} else if (insn->code == (BPF_JMP \| BPF_EXIT)) {
abe08840	237	verbose(cbs->private_data, "(%02x) exit\n", insn->code);
f4ac7e0b	238	} else if (BPF_SRC(insn->code) == BPF_X) {
56cbd82e JW	239	verbose(cbs->private_data,
	240	"(%02x) if %c%d %s %c%d goto pc%+d\n",
	241	insn->code, class == BPF_JMP32 ? 'w' : 'r',
	242	insn->dst_reg,
f4ac7e0b	243	bpf_jmp_string[BPF_OP(insn->code) >> 4],
56cbd82e	244	class == BPF_JMP32 ? 'w' : 'r',
f4ac7e0b JK	245	insn->src_reg, insn->off);
f4ac7e0b JK	246	} else {
56cbd82e JW	247	verbose(cbs->private_data,
	248	"(%02x) if %c%d %s 0x%x goto pc%+d\n",
	249	insn->code, class == BPF_JMP32 ? 'w' : 'r',
	250	insn->dst_reg,
f4ac7e0b JK	251	bpf_jmp_string[BPF_OP(insn->code) >> 4],
	252	insn->imm, insn->off);
	253	}
	254	} else {
abe08840	255	verbose(cbs->private_data, "(%02x) %s\n",
f4ac7e0b JK	256	insn->code, bpf_class_string[class]);
	257	}
	258	}