xref: /kernel/linux/linux-5.10/tools/testing/selftests/bpf/verifier/subreg.c

/* This file contains sub-register zero extension checks for insns defining
 * sub-registers, meaning:
 *   - All insns under BPF_ALU class. Their BPF_ALU32 variants or narrow width
 *     forms (BPF_END) could define sub-registers.
 *   - Narrow direct loads, BPF_B/H/W | BPF_LDX.
 *   - BPF_LD is not exposed to JIT back-ends, so no need for testing.
 *
 * "get_prandom_u32" is used to initialize low 32-bit of some registers to
 * prevent potential optimizations done by verifier or JIT back-ends which could
 * optimize register back into constant when range info shows one register is a
 * constant.
 */
{
	"add32 reg zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
	BPF_LD_IMM64(BPF_REG_0, 0x100000000ULL),
	BPF_ALU32_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"add32 imm zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	/* An insn could have no effect on the low 32-bit, for example:
	 *   a = a + 0
	 *   a = a | 0
	 *   a = a & -1
	 * But, they should still zero high 32-bit.
	 */
	BPF_ALU32_IMM(BPF_ADD, BPF_REG_0, 0),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_0),
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_ALU32_IMM(BPF_ADD, BPF_REG_0, -2),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_6),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"sub32 reg zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
	BPF_LD_IMM64(BPF_REG_0, 0x1ffffffffULL),
	BPF_ALU32_REG(BPF_SUB, BPF_REG_0, BPF_REG_1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"sub32 imm zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_ALU32_IMM(BPF_SUB, BPF_REG_0, 0),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_0),
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_ALU32_IMM(BPF_SUB, BPF_REG_0, 1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_6),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"mul32 reg zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
	BPF_LD_IMM64(BPF_REG_0, 0x100000001ULL),
	BPF_ALU32_REG(BPF_MUL, BPF_REG_0, BPF_REG_1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"mul32 imm zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_ALU32_IMM(BPF_MUL, BPF_REG_0, 1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_0),
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_ALU32_IMM(BPF_MUL, BPF_REG_0, -1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_6),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"div32 reg zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
	BPF_MOV64_IMM(BPF_REG_0, -1),
	BPF_ALU32_REG(BPF_DIV, BPF_REG_0, BPF_REG_1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"div32 imm zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_ALU32_IMM(BPF_DIV, BPF_REG_0, 1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_0),
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_ALU32_IMM(BPF_DIV, BPF_REG_0, 2),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_6),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"or32 reg zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
	BPF_LD_IMM64(BPF_REG_0, 0x100000001ULL),
	BPF_ALU32_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"or32 imm zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_ALU32_IMM(BPF_OR, BPF_REG_0, 0),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_0),
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_ALU32_IMM(BPF_OR, BPF_REG_0, 1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_6),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"and32 reg zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x100000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_1, BPF_REG_0),
	BPF_LD_IMM64(BPF_REG_0, 0x1ffffffffULL),
	BPF_ALU32_REG(BPF_AND, BPF_REG_0, BPF_REG_1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"and32 imm zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_ALU32_IMM(BPF_AND, BPF_REG_0, -1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_0),
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_ALU32_IMM(BPF_AND, BPF_REG_0, -2),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_6),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"lsh32 reg zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x100000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_MOV64_IMM(BPF_REG_1, 1),
	BPF_ALU32_REG(BPF_LSH, BPF_REG_0, BPF_REG_1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"lsh32 imm zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_ALU32_IMM(BPF_LSH, BPF_REG_0, 0),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_0),
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_ALU32_IMM(BPF_LSH, BPF_REG_0, 1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_6),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"rsh32 reg zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_MOV64_IMM(BPF_REG_1, 1),
	BPF_ALU32_REG(BPF_RSH, BPF_REG_0, BPF_REG_1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"rsh32 imm zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_ALU32_IMM(BPF_RSH, BPF_REG_0, 0),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_0),
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_ALU32_IMM(BPF_RSH, BPF_REG_0, 1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_6),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"neg32 reg zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_ALU32_IMM(BPF_NEG, BPF_REG_0, 0),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"mod32 reg zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
	BPF_MOV64_IMM(BPF_REG_0, -1),
	BPF_ALU32_REG(BPF_MOD, BPF_REG_0, BPF_REG_1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"mod32 imm zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_ALU32_IMM(BPF_MOD, BPF_REG_0, 1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_0),
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_ALU32_IMM(BPF_MOD, BPF_REG_0, 2),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_6),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"xor32 reg zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
	BPF_LD_IMM64(BPF_REG_0, 0x100000000ULL),
	BPF_ALU32_REG(BPF_XOR, BPF_REG_0, BPF_REG_1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"xor32 imm zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_ALU32_IMM(BPF_XOR, BPF_REG_0, 1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"mov32 reg zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x100000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_1, BPF_REG_0),
	BPF_LD_IMM64(BPF_REG_0, 0x100000000ULL),
	BPF_MOV32_REG(BPF_REG_0, BPF_REG_1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"mov32 imm zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_MOV32_IMM(BPF_REG_0, 0),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_0),
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_MOV32_IMM(BPF_REG_0, 1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_6),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"arsh32 reg zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_MOV64_IMM(BPF_REG_1, 1),
	BPF_ALU32_REG(BPF_ARSH, BPF_REG_0, BPF_REG_1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"arsh32 imm zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_ALU32_IMM(BPF_ARSH, BPF_REG_0, 0),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_0),
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_ALU32_IMM(BPF_ARSH, BPF_REG_0, 1),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_6),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"end16 (to_le) reg zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_0),
	BPF_ALU64_IMM(BPF_LSH, BPF_REG_6, 32),
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_6),
	BPF_ENDIAN(BPF_TO_LE, BPF_REG_0, 16),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"end32 (to_le) reg zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_0),
	BPF_ALU64_IMM(BPF_LSH, BPF_REG_6, 32),
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_6),
	BPF_ENDIAN(BPF_TO_LE, BPF_REG_0, 32),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"end16 (to_be) reg zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_0),
	BPF_ALU64_IMM(BPF_LSH, BPF_REG_6, 32),
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_6),
	BPF_ENDIAN(BPF_TO_BE, BPF_REG_0, 16),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"end32 (to_be) reg zero extend check",
	.insns = {
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_0),
	BPF_ALU64_IMM(BPF_LSH, BPF_REG_6, 32),
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_6),
	BPF_ENDIAN(BPF_TO_BE, BPF_REG_0, 32),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"ldx_b zero extend check",
	.insns = {
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_10),
	BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -4),
	BPF_ST_MEM(BPF_W, BPF_REG_6, 0, 0xfaceb00c),
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_6, 0),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"ldx_h zero extend check",
	.insns = {
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_10),
	BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -4),
	BPF_ST_MEM(BPF_W, BPF_REG_6, 0, 0xfaceb00c),
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_6, 0),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},
{
	"ldx_w zero extend check",
	.insns = {
	BPF_MOV64_REG(BPF_REG_6, BPF_REG_10),
	BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -4),
	BPF_ST_MEM(BPF_W, BPF_REG_6, 0, 0xfaceb00c),
	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
	BPF_LD_IMM64(BPF_REG_1, 0x1000000000ULL),
	BPF_ALU64_REG(BPF_OR, BPF_REG_0, BPF_REG_1),
	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_6, 0),
	BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, 32),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.retval = 0,
},