Commit 65222842 authored by Eduard Zingerman's avatar Eduard Zingerman Committed by Alexei Starovoitov
Browse files

selftests/bpf: verifier/runtime_jit converted to inline assembly 



Test verifier/runtime_jit automatically converted to use inline assembly.

Signed-off-by: default avatarEduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20230421174234.2391278-18-eddyz87@gmail.com


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent 16a42573

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

+2 −0
Original line number Diff line number Diff line
@@ -48,6 +48,7 @@ 
#include "verifier_ref_tracking.skel.h"

#include "verifier_regalloc.skel.h"

#include "verifier_ringbuf.skel.h"

#include "verifier_runtime_jit.skel.h"

#include "verifier_spill_fill.skel.h"

#include "verifier_stack_ptr.skel.h"

#include "verifier_uninit.skel.h"
@@ -137,6 +138,7 @@ void test_verifier_reg_equal(void) { RUN(verifier_reg_equal); } 
void test_verifier_ref_tracking(void)         { RUN(verifier_ref_tracking); }

void test_verifier_regalloc(void)             { RUN(verifier_regalloc); }

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

void test_verifier_runtime_jit(void)          { RUN(verifier_runtime_jit); }

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

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

void test_verifier_uninit(void)               { RUN(verifier_uninit); }

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

0 → 100644
+360 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

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



#include <linux/bpf.h>

#include <bpf/bpf_helpers.h>

#include "bpf_misc.h"



void dummy_prog_42_socket(void);

void dummy_prog_24_socket(void);

void dummy_prog_loop1_socket(void);

void dummy_prog_loop2_socket(void);



struct {

	__uint(type, BPF_MAP_TYPE_PROG_ARRAY);

	__uint(max_entries, 4);

	__uint(key_size, sizeof(int));

	__array(values, void (void));

} map_prog1_socket SEC(".maps") = {

	.values = {

		[0] = (void *)&dummy_prog_42_socket,

		[1] = (void *)&dummy_prog_loop1_socket,

		[2] = (void *)&dummy_prog_24_socket,

	},

};



struct {

	__uint(type, BPF_MAP_TYPE_PROG_ARRAY);

	__uint(max_entries, 8);

	__uint(key_size, sizeof(int));

	__array(values, void (void));

} map_prog2_socket SEC(".maps") = {

	.values = {

		[1] = (void *)&dummy_prog_loop2_socket,

		[2] = (void *)&dummy_prog_24_socket,

		[7] = (void *)&dummy_prog_42_socket,

	},

};



SEC("socket")

__auxiliary __auxiliary_unpriv

__naked void dummy_prog_42_socket(void)

{

	asm volatile ("r0 = 42; exit;");

}



SEC("socket")

__auxiliary __auxiliary_unpriv

__naked void dummy_prog_24_socket(void)

{

	asm volatile ("r0 = 24; exit;");

}



SEC("socket")

__auxiliary __auxiliary_unpriv

__naked void dummy_prog_loop1_socket(void)

{

	asm volatile ("			\

	r3 = 1;				\

	r2 = %[map_prog1_socket] ll;	\

	call %[bpf_tail_call];		\

	r0 = 41;			\

	exit;				\

"	:

	: __imm(bpf_tail_call),

	  __imm_addr(map_prog1_socket)

	: __clobber_all);

}



SEC("socket")

__auxiliary __auxiliary_unpriv

__naked void dummy_prog_loop2_socket(void)

{

	asm volatile ("			\

	r3 = 1;				\

	r2 = %[map_prog2_socket] ll;	\

	call %[bpf_tail_call];		\

	r0 = 41;			\

	exit;				\

"	:

	: __imm(bpf_tail_call),

	  __imm_addr(map_prog2_socket)

	: __clobber_all);

}



SEC("socket")

__description("runtime/jit: tail_call within bounds, prog once")

__success __success_unpriv __retval(42)

__naked void call_within_bounds_prog_once(void)

{

	asm volatile ("					\

	r3 = 0;						\

	r2 = %[map_prog1_socket] ll;			\

	call %[bpf_tail_call];				\

	r0 = 1;						\

	exit;						\

"	:

	: __imm(bpf_tail_call),

	  __imm_addr(map_prog1_socket)

	: __clobber_all);

}



SEC("socket")

__description("runtime/jit: tail_call within bounds, prog loop")

__success __success_unpriv __retval(41)

__naked void call_within_bounds_prog_loop(void)

{

	asm volatile ("					\

	r3 = 1;						\

	r2 = %[map_prog1_socket] ll;			\

	call %[bpf_tail_call];				\

	r0 = 1;						\

	exit;						\

"	:

	: __imm(bpf_tail_call),

	  __imm_addr(map_prog1_socket)

	: __clobber_all);

}



SEC("socket")

__description("runtime/jit: tail_call within bounds, no prog")

__success __success_unpriv __retval(1)

__naked void call_within_bounds_no_prog(void)

{

	asm volatile ("					\

	r3 = 3;						\

	r2 = %[map_prog1_socket] ll;			\

	call %[bpf_tail_call];				\

	r0 = 1;						\

	exit;						\

"	:

	: __imm(bpf_tail_call),

	  __imm_addr(map_prog1_socket)

	: __clobber_all);

}



SEC("socket")

__description("runtime/jit: tail_call within bounds, key 2")

__success __success_unpriv __retval(24)

__naked void call_within_bounds_key_2(void)

{

	asm volatile ("					\

	r3 = 2;						\

	r2 = %[map_prog1_socket] ll;			\

	call %[bpf_tail_call];				\

	r0 = 1;						\

	exit;						\

"	:

	: __imm(bpf_tail_call),

	  __imm_addr(map_prog1_socket)

	: __clobber_all);

}



SEC("socket")

__description("runtime/jit: tail_call within bounds, key 2 / key 2, first branch")

__success __success_unpriv __retval(24)

__naked void _2_key_2_first_branch(void)

{

	asm volatile ("					\

	r0 = 13;					\

	*(u8*)(r1 + %[__sk_buff_cb_0]) = r0;		\

	r0 = *(u8*)(r1 + %[__sk_buff_cb_0]);		\

	if r0 == 13 goto l0_%=;				\

	r3 = 2;						\

	r2 = %[map_prog1_socket] ll;			\

	goto l1_%=;					\

l0_%=:	r3 = 2;						\

	r2 = %[map_prog1_socket] ll;			\

l1_%=:	call %[bpf_tail_call];				\

	r0 = 1;						\

	exit;						\

"	:

	: __imm(bpf_tail_call),

	  __imm_addr(map_prog1_socket),

	  __imm_const(__sk_buff_cb_0, offsetof(struct __sk_buff, cb[0]))

	: __clobber_all);

}



SEC("socket")

__description("runtime/jit: tail_call within bounds, key 2 / key 2, second branch")

__success __success_unpriv __retval(24)

__naked void _2_key_2_second_branch(void)

{

	asm volatile ("					\

	r0 = 14;					\

	*(u8*)(r1 + %[__sk_buff_cb_0]) = r0;		\

	r0 = *(u8*)(r1 + %[__sk_buff_cb_0]);		\

	if r0 == 13 goto l0_%=;				\

	r3 = 2;						\

	r2 = %[map_prog1_socket] ll;			\

	goto l1_%=;					\

l0_%=:	r3 = 2;						\

	r2 = %[map_prog1_socket] ll;			\

l1_%=:	call %[bpf_tail_call];				\

	r0 = 1;						\

	exit;						\

"	:

	: __imm(bpf_tail_call),

	  __imm_addr(map_prog1_socket),

	  __imm_const(__sk_buff_cb_0, offsetof(struct __sk_buff, cb[0]))

	: __clobber_all);

}



SEC("socket")

__description("runtime/jit: tail_call within bounds, key 0 / key 2, first branch")

__success __success_unpriv __retval(24)

__naked void _0_key_2_first_branch(void)

{

	asm volatile ("					\

	r0 = 13;					\

	*(u8*)(r1 + %[__sk_buff_cb_0]) = r0;		\

	r0 = *(u8*)(r1 + %[__sk_buff_cb_0]);		\

	if r0 == 13 goto l0_%=;				\

	r3 = 0;						\

	r2 = %[map_prog1_socket] ll;			\

	goto l1_%=;					\

l0_%=:	r3 = 2;						\

	r2 = %[map_prog1_socket] ll;			\

l1_%=:	call %[bpf_tail_call];				\

	r0 = 1;						\

	exit;						\

"	:

	: __imm(bpf_tail_call),

	  __imm_addr(map_prog1_socket),

	  __imm_const(__sk_buff_cb_0, offsetof(struct __sk_buff, cb[0]))

	: __clobber_all);

}



SEC("socket")

__description("runtime/jit: tail_call within bounds, key 0 / key 2, second branch")

__success __success_unpriv __retval(42)

__naked void _0_key_2_second_branch(void)

{

	asm volatile ("					\

	r0 = 14;					\

	*(u8*)(r1 + %[__sk_buff_cb_0]) = r0;		\

	r0 = *(u8*)(r1 + %[__sk_buff_cb_0]);		\

	if r0 == 13 goto l0_%=;				\

	r3 = 0;						\

	r2 = %[map_prog1_socket] ll;			\

	goto l1_%=;					\

l0_%=:	r3 = 2;						\

	r2 = %[map_prog1_socket] ll;			\

l1_%=:	call %[bpf_tail_call];				\

	r0 = 1;						\

	exit;						\

"	:

	: __imm(bpf_tail_call),

	  __imm_addr(map_prog1_socket),

	  __imm_const(__sk_buff_cb_0, offsetof(struct __sk_buff, cb[0]))

	: __clobber_all);

}



SEC("socket")

__description("runtime/jit: tail_call within bounds, different maps, first branch")

__success __failure_unpriv __msg_unpriv("tail_call abusing map_ptr")

__retval(1)

__naked void bounds_different_maps_first_branch(void)

{

	asm volatile ("					\

	r0 = 13;					\

	*(u8*)(r1 + %[__sk_buff_cb_0]) = r0;		\

	r0 = *(u8*)(r1 + %[__sk_buff_cb_0]);		\

	if r0 == 13 goto l0_%=;				\

	r3 = 0;						\

	r2 = %[map_prog1_socket] ll;			\

	goto l1_%=;					\

l0_%=:	r3 = 0;						\

	r2 = %[map_prog2_socket] ll;			\

l1_%=:	call %[bpf_tail_call];				\

	r0 = 1;						\

	exit;						\

"	:

	: __imm(bpf_tail_call),

	  __imm_addr(map_prog1_socket),

	  __imm_addr(map_prog2_socket),

	  __imm_const(__sk_buff_cb_0, offsetof(struct __sk_buff, cb[0]))

	: __clobber_all);

}



SEC("socket")

__description("runtime/jit: tail_call within bounds, different maps, second branch")

__success __failure_unpriv __msg_unpriv("tail_call abusing map_ptr")

__retval(42)

__naked void bounds_different_maps_second_branch(void)

{

	asm volatile ("					\

	r0 = 14;					\

	*(u8*)(r1 + %[__sk_buff_cb_0]) = r0;		\

	r0 = *(u8*)(r1 + %[__sk_buff_cb_0]);		\

	if r0 == 13 goto l0_%=;				\

	r3 = 0;						\

	r2 = %[map_prog1_socket] ll;			\

	goto l1_%=;					\

l0_%=:	r3 = 0;						\

	r2 = %[map_prog2_socket] ll;			\

l1_%=:	call %[bpf_tail_call];				\

	r0 = 1;						\

	exit;						\

"	:

	: __imm(bpf_tail_call),

	  __imm_addr(map_prog1_socket),

	  __imm_addr(map_prog2_socket),

	  __imm_const(__sk_buff_cb_0, offsetof(struct __sk_buff, cb[0]))

	: __clobber_all);

}



SEC("socket")

__description("runtime/jit: tail_call out of bounds")

__success __success_unpriv __retval(2)

__naked void tail_call_out_of_bounds(void)

{

	asm volatile ("					\

	r3 = 256;					\

	r2 = %[map_prog1_socket] ll;			\

	call %[bpf_tail_call];				\

	r0 = 2;						\

	exit;						\

"	:

	: __imm(bpf_tail_call),

	  __imm_addr(map_prog1_socket)

	: __clobber_all);

}



SEC("socket")

__description("runtime/jit: pass negative index to tail_call")

__success __success_unpriv __retval(2)

__naked void negative_index_to_tail_call(void)

{

	asm volatile ("					\

	r3 = -1;					\

	r2 = %[map_prog1_socket] ll;			\

	call %[bpf_tail_call];				\

	r0 = 2;						\

	exit;						\

"	:

	: __imm(bpf_tail_call),

	  __imm_addr(map_prog1_socket)

	: __clobber_all);

}



SEC("socket")

__description("runtime/jit: pass > 32bit index to tail_call")

__success __success_unpriv __retval(42)

/* Verifier rewrite for unpriv skips tail call here. */

__retval_unpriv(2)

__naked void _32bit_index_to_tail_call(void)

{

	asm volatile ("					\

	r3 = 0x100000000 ll;				\

	r2 = %[map_prog1_socket] ll;			\

	call %[bpf_tail_call];				\

	r0 = 2;						\

	exit;						\

"	:

	: __imm(bpf_tail_call),

	  __imm_addr(map_prog1_socket)

	: __clobber_all);

}



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

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

deleted100644 → 0
+0 −231
Original line number Diff line number Diff line 
{

	"runtime/jit: tail_call within bounds, prog once",

	.insns = {

	BPF_MOV64_IMM(BPF_REG_3, 0),

	BPF_LD_MAP_FD(BPF_REG_2, 0),

	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call),

	BPF_MOV64_IMM(BPF_REG_0, 1),

	BPF_EXIT_INSN(),

	},

	.fixup_prog1 = { 1 },

	.result = ACCEPT,

	.retval = 42,

},

{

	"runtime/jit: tail_call within bounds, prog loop",

	.insns = {

	BPF_MOV64_IMM(BPF_REG_3, 1),

	BPF_LD_MAP_FD(BPF_REG_2, 0),

	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call),

	BPF_MOV64_IMM(BPF_REG_0, 1),

	BPF_EXIT_INSN(),

	},

	.fixup_prog1 = { 1 },

	.result = ACCEPT,

	.retval = 41,

},

{

	"runtime/jit: tail_call within bounds, no prog",

	.insns = {

	BPF_MOV64_IMM(BPF_REG_3, 3),

	BPF_LD_MAP_FD(BPF_REG_2, 0),

	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call),

	BPF_MOV64_IMM(BPF_REG_0, 1),

	BPF_EXIT_INSN(),

	},

	.fixup_prog1 = { 1 },

	.result = ACCEPT,

	.retval = 1,

},

{

	"runtime/jit: tail_call within bounds, key 2",

	.insns = {

	BPF_MOV64_IMM(BPF_REG_3, 2),

	BPF_LD_MAP_FD(BPF_REG_2, 0),

	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call),

	BPF_MOV64_IMM(BPF_REG_0, 1),

	BPF_EXIT_INSN(),

	},

	.fixup_prog1 = { 1 },

	.result = ACCEPT,

	.retval = 24,

},

{

	"runtime/jit: tail_call within bounds, key 2 / key 2, first branch",

	.insns = {

	BPF_MOV64_IMM(BPF_REG_0, 13),

	BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,

		    offsetof(struct __sk_buff, cb[0])),

	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,

		    offsetof(struct __sk_buff, cb[0])),

	BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 13, 4),

	BPF_MOV64_IMM(BPF_REG_3, 2),

	BPF_LD_MAP_FD(BPF_REG_2, 0),

	BPF_JMP_IMM(BPF_JA, 0, 0, 3),

	BPF_MOV64_IMM(BPF_REG_3, 2),

	BPF_LD_MAP_FD(BPF_REG_2, 0),

	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call),

	BPF_MOV64_IMM(BPF_REG_0, 1),

	BPF_EXIT_INSN(),

	},

	.fixup_prog1 = { 5, 9 },

	.result = ACCEPT,

	.retval = 24,

},

{

	"runtime/jit: tail_call within bounds, key 2 / key 2, second branch",

	.insns = {

	BPF_MOV64_IMM(BPF_REG_0, 14),

	BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,

		    offsetof(struct __sk_buff, cb[0])),

	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,

		    offsetof(struct __sk_buff, cb[0])),

	BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 13, 4),

	BPF_MOV64_IMM(BPF_REG_3, 2),

	BPF_LD_MAP_FD(BPF_REG_2, 0),

	BPF_JMP_IMM(BPF_JA, 0, 0, 3),

	BPF_MOV64_IMM(BPF_REG_3, 2),

	BPF_LD_MAP_FD(BPF_REG_2, 0),

	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call),

	BPF_MOV64_IMM(BPF_REG_0, 1),

	BPF_EXIT_INSN(),

	},

	.fixup_prog1 = { 5, 9 },

	.result = ACCEPT,

	.retval = 24,

},

{

	"runtime/jit: tail_call within bounds, key 0 / key 2, first branch",

	.insns = {

	BPF_MOV64_IMM(BPF_REG_0, 13),

	BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,

		    offsetof(struct __sk_buff, cb[0])),

	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,

		    offsetof(struct __sk_buff, cb[0])),

	BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 13, 4),

	BPF_MOV64_IMM(BPF_REG_3, 0),

	BPF_LD_MAP_FD(BPF_REG_2, 0),

	BPF_JMP_IMM(BPF_JA, 0, 0, 3),

	BPF_MOV64_IMM(BPF_REG_3, 2),

	BPF_LD_MAP_FD(BPF_REG_2, 0),

	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call),

	BPF_MOV64_IMM(BPF_REG_0, 1),

	BPF_EXIT_INSN(),

	},

	.fixup_prog1 = { 5, 9 },

	.result = ACCEPT,

	.retval = 24,

},

{

	"runtime/jit: tail_call within bounds, key 0 / key 2, second branch",

	.insns = {

	BPF_MOV64_IMM(BPF_REG_0, 14),

	BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,

		    offsetof(struct __sk_buff, cb[0])),

	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,

		    offsetof(struct __sk_buff, cb[0])),

	BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 13, 4),

	BPF_MOV64_IMM(BPF_REG_3, 0),

	BPF_LD_MAP_FD(BPF_REG_2, 0),

	BPF_JMP_IMM(BPF_JA, 0, 0, 3),

	BPF_MOV64_IMM(BPF_REG_3, 2),

	BPF_LD_MAP_FD(BPF_REG_2, 0),

	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call),

	BPF_MOV64_IMM(BPF_REG_0, 1),

	BPF_EXIT_INSN(),

	},

	.fixup_prog1 = { 5, 9 },

	.result = ACCEPT,

	.retval = 42,

},

{

	"runtime/jit: tail_call within bounds, different maps, first branch",

	.insns = {

	BPF_MOV64_IMM(BPF_REG_0, 13),

	BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,

		    offsetof(struct __sk_buff, cb[0])),

	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,

		    offsetof(struct __sk_buff, cb[0])),

	BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 13, 4),

	BPF_MOV64_IMM(BPF_REG_3, 0),

	BPF_LD_MAP_FD(BPF_REG_2, 0),

	BPF_JMP_IMM(BPF_JA, 0, 0, 3),

	BPF_MOV64_IMM(BPF_REG_3, 0),

	BPF_LD_MAP_FD(BPF_REG_2, 0),

	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call),

	BPF_MOV64_IMM(BPF_REG_0, 1),

	BPF_EXIT_INSN(),

	},

	.fixup_prog1 = { 5 },

	.fixup_prog2 = { 9 },

	.result_unpriv = REJECT,

	.errstr_unpriv = "tail_call abusing map_ptr",

	.result = ACCEPT,

	.retval = 1,

},

{

	"runtime/jit: tail_call within bounds, different maps, second branch",

	.insns = {

	BPF_MOV64_IMM(BPF_REG_0, 14),

	BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,

		    offsetof(struct __sk_buff, cb[0])),

	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,

		    offsetof(struct __sk_buff, cb[0])),

	BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 13, 4),

	BPF_MOV64_IMM(BPF_REG_3, 0),

	BPF_LD_MAP_FD(BPF_REG_2, 0),

	BPF_JMP_IMM(BPF_JA, 0, 0, 3),

	BPF_MOV64_IMM(BPF_REG_3, 0),

	BPF_LD_MAP_FD(BPF_REG_2, 0),

	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call),

	BPF_MOV64_IMM(BPF_REG_0, 1),

	BPF_EXIT_INSN(),

	},

	.fixup_prog1 = { 5 },

	.fixup_prog2 = { 9 },

	.result_unpriv = REJECT,

	.errstr_unpriv = "tail_call abusing map_ptr",

	.result = ACCEPT,

	.retval = 42,

},

{

	"runtime/jit: tail_call out of bounds",

	.insns = {

	BPF_MOV64_IMM(BPF_REG_3, 256),

	BPF_LD_MAP_FD(BPF_REG_2, 0),

	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call),

	BPF_MOV64_IMM(BPF_REG_0, 2),

	BPF_EXIT_INSN(),

	},

	.fixup_prog1 = { 1 },

	.result = ACCEPT,

	.retval = 2,

},

{

	"runtime/jit: pass negative index to tail_call",

	.insns = {

	BPF_MOV64_IMM(BPF_REG_3, -1),

	BPF_LD_MAP_FD(BPF_REG_2, 0),

	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call),

	BPF_MOV64_IMM(BPF_REG_0, 2),

	BPF_EXIT_INSN(),

	},

	.fixup_prog1 = { 1 },

	.result = ACCEPT,

	.retval = 2,

},

{

	"runtime/jit: pass > 32bit index to tail_call",

	.insns = {

	BPF_LD_IMM64(BPF_REG_3, 0x100000000ULL),

	BPF_LD_MAP_FD(BPF_REG_2, 0),

	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_tail_call),

	BPF_MOV64_IMM(BPF_REG_0, 2),

	BPF_EXIT_INSN(),

	},

	.fixup_prog1 = { 2 },

	.result = ACCEPT,

	.retval = 42,

	/* Verifier rewrite for unpriv skips tail call here. */

	.retval_unpriv = 2,

},