Commit edff37b2 authored by Eduard Zingerman's avatar Eduard Zingerman Committed by Alexei Starovoitov
Browse files

selftests/bpf: verifier/stack_ptr.c converted to inline assembly 



Test verifier/stack_ptr.c automatically converted to use inline assembly.

Signed-off-by: default avatarEduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20230325025524.144043-36-eddyz87@gmail.com


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent f4fe3cfe

tools/testing/selftests/bpf/prog_tests/verifier.c

+2 −0
Original line number Diff line number Diff line
@@ -32,6 +32,7 @@ 
#include "verifier_raw_tp_writable.skel.h"

#include "verifier_ringbuf.skel.h"

#include "verifier_spill_fill.skel.h"

#include "verifier_stack_ptr.skel.h"



__maybe_unused

static void run_tests_aux(const char *skel_name, skel_elf_bytes_fn elf_bytes_factory)
@@ -86,3 +87,4 @@ void test_verifier_raw_stack(void) { RUN(verifier_raw_stack); } 
void test_verifier_raw_tp_writable(void)      { RUN(verifier_raw_tp_writable); }

void test_verifier_ringbuf(void)              { RUN(verifier_ringbuf); }

void test_verifier_spill_fill(void)           { RUN(verifier_spill_fill); }

void test_verifier_stack_ptr(void)            { RUN(verifier_stack_ptr); }

tools/testing/selftests/bpf/progs/verifier_stack_ptr.c

0 → 100644
+484 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

/* Converted from tools/testing/selftests/bpf/verifier/stack_ptr.c */



#include <linux/bpf.h>

#include <bpf/bpf_helpers.h>

#include <limits.h>

#include "bpf_misc.h"



#define MAX_ENTRIES 11



struct test_val {

	unsigned int index;

	int foo[MAX_ENTRIES];

};



struct {

	__uint(type, BPF_MAP_TYPE_ARRAY);

	__uint(max_entries, 1);

	__type(key, int);

	__type(value, struct test_val);

} map_array_48b SEC(".maps");



SEC("socket")

__description("PTR_TO_STACK store/load")

__success __success_unpriv __retval(0xfaceb00c)

__naked void ptr_to_stack_store_load(void)

{

	asm volatile ("					\

	r1 = r10;					\

	r1 += -10;					\

	r0 = 0xfaceb00c;				\

	*(u64*)(r1 + 2) = r0;				\

	r0 = *(u64*)(r1 + 2);				\

	exit;						\

"	::: __clobber_all);

}



SEC("socket")

__description("PTR_TO_STACK store/load - bad alignment on off")

__failure __msg("misaligned stack access off (0x0; 0x0)+-8+2 size 8")

__failure_unpriv

__naked void load_bad_alignment_on_off(void)

{

	asm volatile ("					\

	r1 = r10;					\

	r1 += -8;					\

	r0 = 0xfaceb00c;				\

	*(u64*)(r1 + 2) = r0;				\

	r0 = *(u64*)(r1 + 2);				\

	exit;						\

"	::: __clobber_all);

}



SEC("socket")

__description("PTR_TO_STACK store/load - bad alignment on reg")

__failure __msg("misaligned stack access off (0x0; 0x0)+-10+8 size 8")

__failure_unpriv

__naked void load_bad_alignment_on_reg(void)

{

	asm volatile ("					\

	r1 = r10;					\

	r1 += -10;					\

	r0 = 0xfaceb00c;				\

	*(u64*)(r1 + 8) = r0;				\

	r0 = *(u64*)(r1 + 8);				\

	exit;						\

"	::: __clobber_all);

}



SEC("socket")

__description("PTR_TO_STACK store/load - out of bounds low")

__failure __msg("invalid write to stack R1 off=-79992 size=8")

__msg_unpriv("R1 stack pointer arithmetic goes out of range")

__naked void load_out_of_bounds_low(void)

{

	asm volatile ("					\

	r1 = r10;					\

	r1 += -80000;					\

	r0 = 0xfaceb00c;				\

	*(u64*)(r1 + 8) = r0;				\

	r0 = *(u64*)(r1 + 8);				\

	exit;						\

"	::: __clobber_all);

}



SEC("socket")

__description("PTR_TO_STACK store/load - out of bounds high")

__failure __msg("invalid write to stack R1 off=0 size=8")

__failure_unpriv

__naked void load_out_of_bounds_high(void)

{

	asm volatile ("					\

	r1 = r10;					\

	r1 += -8;					\

	r0 = 0xfaceb00c;				\

	*(u64*)(r1 + 8) = r0;				\

	r0 = *(u64*)(r1 + 8);				\

	exit;						\

"	::: __clobber_all);

}



SEC("socket")

__description("PTR_TO_STACK check high 1")

__success __success_unpriv __retval(42)

__naked void to_stack_check_high_1(void)

{

	asm volatile ("					\

	r1 = r10;					\

	r1 += -1;					\

	r0 = 42;					\

	*(u8*)(r1 + 0) = r0;				\

	r0 = *(u8*)(r1 + 0);				\

	exit;						\

"	::: __clobber_all);

}



SEC("socket")

__description("PTR_TO_STACK check high 2")

__success __success_unpriv __retval(42)

__naked void to_stack_check_high_2(void)

{

	asm volatile ("					\

	r1 = r10;					\

	r0 = 42;					\

	*(u8*)(r1 - 1) = r0;				\

	r0 = *(u8*)(r1 - 1);				\

	exit;						\

"	::: __clobber_all);

}



SEC("socket")

__description("PTR_TO_STACK check high 3")

__success __failure_unpriv

__msg_unpriv("R1 stack pointer arithmetic goes out of range")

__retval(42)

__naked void to_stack_check_high_3(void)

{

	asm volatile ("					\

	r1 = r10;					\

	r1 += 0;					\

	r0 = 42;					\

	*(u8*)(r1 - 1) = r0;				\

	r0 = *(u8*)(r1 - 1);				\

	exit;						\

"	::: __clobber_all);

}



SEC("socket")

__description("PTR_TO_STACK check high 4")

__failure __msg("invalid write to stack R1 off=0 size=1")

__msg_unpriv("R1 stack pointer arithmetic goes out of range")

__naked void to_stack_check_high_4(void)

{

	asm volatile ("					\

	r1 = r10;					\

	r1 += 0;					\

	r0 = 42;					\

	*(u8*)(r1 + 0) = r0;				\

	r0 = *(u8*)(r1 + 0);				\

	exit;						\

"	::: __clobber_all);

}



SEC("socket")

__description("PTR_TO_STACK check high 5")

__failure __msg("invalid write to stack R1")

__msg_unpriv("R1 stack pointer arithmetic goes out of range")

__naked void to_stack_check_high_5(void)

{

	asm volatile ("					\

	r1 = r10;					\

	r1 += %[__imm_0];				\

	r0 = 42;					\

	*(u8*)(r1 + 0) = r0;				\

	r0 = *(u8*)(r1 + 0);				\

	exit;						\

"	:

	: __imm_const(__imm_0, (1 << 29) - 1)

	: __clobber_all);

}



SEC("socket")

__description("PTR_TO_STACK check high 6")

__failure __msg("invalid write to stack")

__msg_unpriv("R1 stack pointer arithmetic goes out of range")

__naked void to_stack_check_high_6(void)

{

	asm volatile ("					\

	r1 = r10;					\

	r1 += %[__imm_0];				\

	r0 = 42;					\

	*(u8*)(r1 + %[shrt_max]) = r0;			\

	r0 = *(u8*)(r1 + %[shrt_max]);			\

	exit;						\

"	:

	: __imm_const(__imm_0, (1 << 29) - 1),

	  __imm_const(shrt_max, SHRT_MAX)

	: __clobber_all);

}



SEC("socket")

__description("PTR_TO_STACK check high 7")

__failure __msg("fp pointer offset")

__msg_unpriv("R1 stack pointer arithmetic goes out of range")

__naked void to_stack_check_high_7(void)

{

	asm volatile ("					\

	r1 = r10;					\

	r1 += %[__imm_0];				\

	r1 += %[__imm_0];				\

	r0 = 42;					\

	*(u8*)(r1 + %[shrt_max]) = r0;			\

	r0 = *(u8*)(r1 + %[shrt_max]);			\

	exit;						\

"	:

	: __imm_const(__imm_0, (1 << 29) - 1),

	  __imm_const(shrt_max, SHRT_MAX)

	: __clobber_all);

}



SEC("socket")

__description("PTR_TO_STACK check low 1")

__success __success_unpriv __retval(42)

__naked void to_stack_check_low_1(void)

{

	asm volatile ("					\

	r1 = r10;					\

	r1 += -512;					\

	r0 = 42;					\

	*(u8*)(r1 + 0) = r0;				\

	r0 = *(u8*)(r1 + 0);				\

	exit;						\

"	::: __clobber_all);

}



SEC("socket")

__description("PTR_TO_STACK check low 2")

__success __failure_unpriv

__msg_unpriv("R1 stack pointer arithmetic goes out of range")

__retval(42)

__naked void to_stack_check_low_2(void)

{

	asm volatile ("					\

	r1 = r10;					\

	r1 += -513;					\

	r0 = 42;					\

	*(u8*)(r1 + 1) = r0;				\

	r0 = *(u8*)(r1 + 1);				\

	exit;						\

"	::: __clobber_all);

}



SEC("socket")

__description("PTR_TO_STACK check low 3")

__failure __msg("invalid write to stack R1 off=-513 size=1")

__msg_unpriv("R1 stack pointer arithmetic goes out of range")

__naked void to_stack_check_low_3(void)

{

	asm volatile ("					\

	r1 = r10;					\

	r1 += -513;					\

	r0 = 42;					\

	*(u8*)(r1 + 0) = r0;				\

	r0 = *(u8*)(r1 + 0);				\

	exit;						\

"	::: __clobber_all);

}



SEC("socket")

__description("PTR_TO_STACK check low 4")

__failure __msg("math between fp pointer")

__failure_unpriv

__naked void to_stack_check_low_4(void)

{

	asm volatile ("					\

	r1 = r10;					\

	r1 += %[int_min];				\

	r0 = 42;					\

	*(u8*)(r1 + 0) = r0;				\

	r0 = *(u8*)(r1 + 0);				\

	exit;						\

"	:

	: __imm_const(int_min, INT_MIN)

	: __clobber_all);

}



SEC("socket")

__description("PTR_TO_STACK check low 5")

__failure __msg("invalid write to stack")

__msg_unpriv("R1 stack pointer arithmetic goes out of range")

__naked void to_stack_check_low_5(void)

{

	asm volatile ("					\

	r1 = r10;					\

	r1 += %[__imm_0];				\

	r0 = 42;					\

	*(u8*)(r1 + 0) = r0;				\

	r0 = *(u8*)(r1 + 0);				\

	exit;						\

"	:

	: __imm_const(__imm_0, -((1 << 29) - 1))

	: __clobber_all);

}



SEC("socket")

__description("PTR_TO_STACK check low 6")

__failure __msg("invalid write to stack")

__msg_unpriv("R1 stack pointer arithmetic goes out of range")

__naked void to_stack_check_low_6(void)

{

	asm volatile ("					\

	r1 = r10;					\

	r1 += %[__imm_0];				\

	r0 = 42;					\

	*(u8*)(r1  %[shrt_min]) = r0;			\

	r0 = *(u8*)(r1  %[shrt_min]);			\

	exit;						\

"	:

	: __imm_const(__imm_0, -((1 << 29) - 1)),

	  __imm_const(shrt_min, SHRT_MIN)

	: __clobber_all);

}



SEC("socket")

__description("PTR_TO_STACK check low 7")

__failure __msg("fp pointer offset")

__msg_unpriv("R1 stack pointer arithmetic goes out of range")

__naked void to_stack_check_low_7(void)

{

	asm volatile ("					\

	r1 = r10;					\

	r1 += %[__imm_0];				\

	r1 += %[__imm_0];				\

	r0 = 42;					\

	*(u8*)(r1  %[shrt_min]) = r0;			\

	r0 = *(u8*)(r1  %[shrt_min]);			\

	exit;						\

"	:

	: __imm_const(__imm_0, -((1 << 29) - 1)),

	  __imm_const(shrt_min, SHRT_MIN)

	: __clobber_all);

}



SEC("socket")

__description("PTR_TO_STACK mixed reg/k, 1")

__success __success_unpriv __retval(42)

__naked void stack_mixed_reg_k_1(void)

{

	asm volatile ("					\

	r1 = r10;					\

	r1 += -3;					\

	r2 = -3;					\

	r1 += r2;					\

	r0 = 42;					\

	*(u8*)(r1 + 0) = r0;				\

	r0 = *(u8*)(r1 + 0);				\

	exit;						\

"	::: __clobber_all);

}



SEC("socket")

__description("PTR_TO_STACK mixed reg/k, 2")

__success __success_unpriv __retval(42)

__naked void stack_mixed_reg_k_2(void)

{

	asm volatile ("					\

	r0 = 0;						\

	*(u64*)(r10 - 8) = r0;				\

	r0 = 0;						\

	*(u64*)(r10 - 16) = r0;				\

	r1 = r10;					\

	r1 += -3;					\

	r2 = -3;					\

	r1 += r2;					\

	r0 = 42;					\

	*(u8*)(r1 + 0) = r0;				\

	r5 = r10;					\

	r0 = *(u8*)(r5 - 6);				\

	exit;						\

"	::: __clobber_all);

}



SEC("socket")

__description("PTR_TO_STACK mixed reg/k, 3")

__success __success_unpriv __retval(-3)

__naked void stack_mixed_reg_k_3(void)

{

	asm volatile ("					\

	r1 = r10;					\

	r1 += -3;					\

	r2 = -3;					\

	r1 += r2;					\

	r0 = 42;					\

	*(u8*)(r1 + 0) = r0;				\

	r0 = r2;					\

	exit;						\

"	::: __clobber_all);

}



SEC("socket")

__description("PTR_TO_STACK reg")

__success __success_unpriv __retval(42)

__naked void ptr_to_stack_reg(void)

{

	asm volatile ("					\

	r1 = r10;					\

	r2 = -3;					\

	r1 += r2;					\

	r0 = 42;					\

	*(u8*)(r1 + 0) = r0;				\

	r0 = *(u8*)(r1 + 0);				\

	exit;						\

"	::: __clobber_all);

}



SEC("socket")

__description("stack pointer arithmetic")

__success __success_unpriv __retval(0)

__naked void stack_pointer_arithmetic(void)

{

	asm volatile ("					\

	r1 = 4;						\

	goto l0_%=;					\

l0_%=:	r7 = r10;					\

	r7 += -10;					\

	r7 += -10;					\

	r2 = r7;					\

	r2 += r1;					\

	r0 = 0;						\

	*(u32*)(r2 + 4) = r0;				\

	r2 = r7;					\

	r2 += 8;					\

	r0 = 0;						\

	*(u32*)(r2 + 4) = r0;				\

	r0 = 0;						\

	exit;						\

"	::: __clobber_all);

}



SEC("tc")

__description("store PTR_TO_STACK in R10 to array map using BPF_B")

__success __retval(42)

__naked void array_map_using_bpf_b(void)

{

	asm volatile ("					\

	/* Load pointer to map. */			\

	r2 = r10;					\

	r2 += -8;					\

	r1 = 0;						\

	*(u64*)(r2 + 0) = r1;				\

	r1 = %[map_array_48b] ll;			\

	call %[bpf_map_lookup_elem];			\

	if r0 != 0 goto l0_%=;				\

	r0 = 2;						\

	exit;						\

l0_%=:	r1 = r0;					\

	/* Copy R10 to R9. */				\

	r9 = r10;					\

	/* Pollute other registers with unaligned values. */\

	r2 = -1;					\

	r3 = -1;					\

	r4 = -1;					\

	r5 = -1;					\

	r6 = -1;					\

	r7 = -1;					\

	r8 = -1;					\

	/* Store both R9 and R10 with BPF_B and read back. */\

	*(u8*)(r1 + 0) = r10;				\

	r2 = *(u8*)(r1 + 0);				\

	*(u8*)(r1 + 0) = r9;				\

	r3 = *(u8*)(r1 + 0);				\

	/* Should read back as same value. */		\

	if r2 == r3 goto l1_%=;				\

	r0 = 1;						\

	exit;						\

l1_%=:	r0 = 42;					\

	exit;						\

"	:

	: __imm(bpf_map_lookup_elem),

	  __imm_addr(map_array_48b)

	: __clobber_all);

}



char _license[] SEC("license") = "GPL";

tools/testing/selftests/bpf/verifier/stack_ptr.c

deleted100644 → 0
+0 −359
Original line number Diff line number Diff line 
{

	"PTR_TO_STACK store/load",

	.insns = {

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -10),

	BPF_ST_MEM(BPF_DW, BPF_REG_1, 2, 0xfaceb00c),

	BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 2),

	BPF_EXIT_INSN(),

	},

	.result = ACCEPT,

	.retval = 0xfaceb00c,

},

{

	"PTR_TO_STACK store/load - bad alignment on off",

	.insns = {

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8),

	BPF_ST_MEM(BPF_DW, BPF_REG_1, 2, 0xfaceb00c),

	BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 2),

	BPF_EXIT_INSN(),

	},

	.result = REJECT,

	.errstr = "misaligned stack access off (0x0; 0x0)+-8+2 size 8",

},

{

	"PTR_TO_STACK store/load - bad alignment on reg",

	.insns = {

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -10),

	BPF_ST_MEM(BPF_DW, BPF_REG_1, 8, 0xfaceb00c),

	BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 8),

	BPF_EXIT_INSN(),

	},

	.result = REJECT,

	.errstr = "misaligned stack access off (0x0; 0x0)+-10+8 size 8",

},

{

	"PTR_TO_STACK store/load - out of bounds low",

	.insns = {

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -80000),

	BPF_ST_MEM(BPF_DW, BPF_REG_1, 8, 0xfaceb00c),

	BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 8),

	BPF_EXIT_INSN(),

	},

	.result = REJECT,

	.errstr = "invalid write to stack R1 off=-79992 size=8",

	.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",

},

{

	"PTR_TO_STACK store/load - out of bounds high",

	.insns = {

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8),

	BPF_ST_MEM(BPF_DW, BPF_REG_1, 8, 0xfaceb00c),

	BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 8),

	BPF_EXIT_INSN(),

	},

	.result = REJECT,

	.errstr = "invalid write to stack R1 off=0 size=8",

},

{

	"PTR_TO_STACK check high 1",

	.insns = {

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -1),

	BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),

	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),

	BPF_EXIT_INSN(),

	},

	.result = ACCEPT,

	.retval = 42,

},

{

	"PTR_TO_STACK check high 2",

	.insns = {

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),

	BPF_ST_MEM(BPF_B, BPF_REG_1, -1, 42),

	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, -1),

	BPF_EXIT_INSN(),

	},

	.result = ACCEPT,

	.retval = 42,

},

{

	"PTR_TO_STACK check high 3",

	.insns = {

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0),

	BPF_ST_MEM(BPF_B, BPF_REG_1, -1, 42),

	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, -1),

	BPF_EXIT_INSN(),

	},

	.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",

	.result_unpriv = REJECT,

	.result = ACCEPT,

	.retval = 42,

},

{

	"PTR_TO_STACK check high 4",

	.insns = {

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0),

	BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),

	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),

	BPF_EXIT_INSN(),

	},

	.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",

	.errstr = "invalid write to stack R1 off=0 size=1",

	.result = REJECT,

},

{

	"PTR_TO_STACK check high 5",

	.insns = {

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, (1 << 29) - 1),

	BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),

	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),

	BPF_EXIT_INSN(),

	},

	.result = REJECT,

	.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",

	.errstr = "invalid write to stack R1",

},

{

	"PTR_TO_STACK check high 6",

	.insns = {

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, (1 << 29) - 1),

	BPF_ST_MEM(BPF_B, BPF_REG_1, SHRT_MAX, 42),

	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, SHRT_MAX),

	BPF_EXIT_INSN(),

	},

	.result = REJECT,

	.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",

	.errstr = "invalid write to stack",

},

{

	"PTR_TO_STACK check high 7",

	.insns = {

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, (1 << 29) - 1),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, (1 << 29) - 1),

	BPF_ST_MEM(BPF_B, BPF_REG_1, SHRT_MAX, 42),

	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, SHRT_MAX),

	BPF_EXIT_INSN(),

	},

	.result = REJECT,

	.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",

	.errstr = "fp pointer offset",

},

{

	"PTR_TO_STACK check low 1",

	.insns = {

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -512),

	BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),

	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),

	BPF_EXIT_INSN(),

	},

	.result = ACCEPT,

	.retval = 42,

},

{

	"PTR_TO_STACK check low 2",

	.insns = {

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -513),

	BPF_ST_MEM(BPF_B, BPF_REG_1, 1, 42),

	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 1),

	BPF_EXIT_INSN(),

	},

	.result_unpriv = REJECT,

	.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",

	.result = ACCEPT,

	.retval = 42,

},

{

	"PTR_TO_STACK check low 3",

	.insns = {

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -513),

	BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),

	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),

	BPF_EXIT_INSN(),

	},

	.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",

	.errstr = "invalid write to stack R1 off=-513 size=1",

	.result = REJECT,

},

{

	"PTR_TO_STACK check low 4",

	.insns = {

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, INT_MIN),

	BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),

	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),

	BPF_EXIT_INSN(),

	},

	.result = REJECT,

	.errstr = "math between fp pointer",

},

{

	"PTR_TO_STACK check low 5",

	.insns = {

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -((1 << 29) - 1)),

	BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),

	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),

	BPF_EXIT_INSN(),

	},

	.result = REJECT,

	.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",

	.errstr = "invalid write to stack",

},

{

	"PTR_TO_STACK check low 6",

	.insns = {

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -((1 << 29) - 1)),

	BPF_ST_MEM(BPF_B, BPF_REG_1, SHRT_MIN, 42),

	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, SHRT_MIN),

	BPF_EXIT_INSN(),

	},

	.result = REJECT,

	.errstr = "invalid write to stack",

	.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",

},

{

	"PTR_TO_STACK check low 7",

	.insns = {

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -((1 << 29) - 1)),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -((1 << 29) - 1)),

	BPF_ST_MEM(BPF_B, BPF_REG_1, SHRT_MIN, 42),

	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, SHRT_MIN),

	BPF_EXIT_INSN(),

	},

	.result = REJECT,

	.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",

	.errstr = "fp pointer offset",

},

{

	"PTR_TO_STACK mixed reg/k, 1",

	.insns = {

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -3),

	BPF_MOV64_IMM(BPF_REG_2, -3),

	BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_2),

	BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),

	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),

	BPF_EXIT_INSN(),

	},

	.result = ACCEPT,

	.retval = 42,

},

{

	"PTR_TO_STACK mixed reg/k, 2",

	.insns = {

	BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),

	BPF_ST_MEM(BPF_DW, BPF_REG_10, -16, 0),

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -3),

	BPF_MOV64_IMM(BPF_REG_2, -3),

	BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_2),

	BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),

	BPF_MOV64_REG(BPF_REG_5, BPF_REG_10),

	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_5, -6),

	BPF_EXIT_INSN(),

	},

	.result = ACCEPT,

	.retval = 42,

},

{

	"PTR_TO_STACK mixed reg/k, 3",

	.insns = {

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -3),

	BPF_MOV64_IMM(BPF_REG_2, -3),

	BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_2),

	BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),

	BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),

	BPF_EXIT_INSN(),

	},

	.result = ACCEPT,

	.retval = -3,

},

{

	"PTR_TO_STACK reg",

	.insns = {

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),

	BPF_MOV64_IMM(BPF_REG_2, -3),

	BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_2),

	BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),

	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),

	BPF_EXIT_INSN(),

	},

	.result = ACCEPT,

	.retval = 42,

},

{

	"stack pointer arithmetic",

	.insns = {

	BPF_MOV64_IMM(BPF_REG_1, 4),

	BPF_JMP_IMM(BPF_JA, 0, 0, 0),

	BPF_MOV64_REG(BPF_REG_7, BPF_REG_10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_7, -10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_7, -10),

	BPF_MOV64_REG(BPF_REG_2, BPF_REG_7),

	BPF_ALU64_REG(BPF_ADD, BPF_REG_2, BPF_REG_1),

	BPF_ST_MEM(0, BPF_REG_2, 4, 0),

	BPF_MOV64_REG(BPF_REG_2, BPF_REG_7),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 8),

	BPF_ST_MEM(0, BPF_REG_2, 4, 0),

	BPF_MOV64_IMM(BPF_REG_0, 0),

	BPF_EXIT_INSN(),

	},

	.result = ACCEPT,

},

{

	"store PTR_TO_STACK in R10 to array map using BPF_B",

	.insns = {

	/* Load pointer to map. */

	BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),

	BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),

	BPF_ST_MEM(BPF_DW, BPF_REG_2, 0, 0),

	BPF_LD_MAP_FD(BPF_REG_1, 0),

	BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem),

	BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 2),

	BPF_MOV64_IMM(BPF_REG_0, 2),

	BPF_EXIT_INSN(),

	BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),

	/* Copy R10 to R9. */

	BPF_MOV64_REG(BPF_REG_9, BPF_REG_10),

	/* Pollute other registers with unaligned values. */

	BPF_MOV64_IMM(BPF_REG_2, -1),

	BPF_MOV64_IMM(BPF_REG_3, -1),

	BPF_MOV64_IMM(BPF_REG_4, -1),

	BPF_MOV64_IMM(BPF_REG_5, -1),

	BPF_MOV64_IMM(BPF_REG_6, -1),

	BPF_MOV64_IMM(BPF_REG_7, -1),

	BPF_MOV64_IMM(BPF_REG_8, -1),

	/* Store both R9 and R10 with BPF_B and read back. */

	BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_10, 0),

	BPF_LDX_MEM(BPF_B, BPF_REG_2, BPF_REG_1, 0),

	BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_9, 0),

	BPF_LDX_MEM(BPF_B, BPF_REG_3, BPF_REG_1, 0),

	/* Should read back as same value. */

	BPF_JMP_REG(BPF_JEQ, BPF_REG_2, BPF_REG_3, 2),

	BPF_MOV64_IMM(BPF_REG_0, 1),

	BPF_EXIT_INSN(),

	BPF_MOV64_IMM(BPF_REG_0, 42),

	BPF_EXIT_INSN(),

	},

	.fixup_map_array_48b = { 3 },

	.result = ACCEPT,

	.retval = 42,

	.prog_type = BPF_PROG_TYPE_SCHED_CLS,

},