361 lines
8.6 KiB
C
361 lines
8.6 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/* Converted from tools/testing/selftests/bpf/verifier/runtime_jit.c */
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#include <linux/bpf.h>
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#include <bpf/bpf_helpers.h>
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#include "bpf_misc.h"
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void dummy_prog_42_socket(void);
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void dummy_prog_24_socket(void);
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void dummy_prog_loop1_socket(void);
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void dummy_prog_loop2_socket(void);
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struct {
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__uint(type, BPF_MAP_TYPE_PROG_ARRAY);
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__uint(max_entries, 4);
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__uint(key_size, sizeof(int));
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__array(values, void (void));
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} map_prog1_socket SEC(".maps") = {
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.values = {
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[0] = (void *)&dummy_prog_42_socket,
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[1] = (void *)&dummy_prog_loop1_socket,
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[2] = (void *)&dummy_prog_24_socket,
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},
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};
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struct {
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__uint(type, BPF_MAP_TYPE_PROG_ARRAY);
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__uint(max_entries, 8);
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__uint(key_size, sizeof(int));
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__array(values, void (void));
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} map_prog2_socket SEC(".maps") = {
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.values = {
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[1] = (void *)&dummy_prog_loop2_socket,
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[2] = (void *)&dummy_prog_24_socket,
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[7] = (void *)&dummy_prog_42_socket,
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},
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};
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SEC("socket")
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__auxiliary __auxiliary_unpriv
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__naked void dummy_prog_42_socket(void)
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{
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asm volatile ("r0 = 42; exit;");
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}
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SEC("socket")
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__auxiliary __auxiliary_unpriv
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__naked void dummy_prog_24_socket(void)
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{
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asm volatile ("r0 = 24; exit;");
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}
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SEC("socket")
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__auxiliary __auxiliary_unpriv
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__naked void dummy_prog_loop1_socket(void)
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{
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asm volatile (" \
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r3 = 1; \
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r2 = %[map_prog1_socket] ll; \
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call %[bpf_tail_call]; \
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r0 = 41; \
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exit; \
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" :
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: __imm(bpf_tail_call),
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__imm_addr(map_prog1_socket)
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: __clobber_all);
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}
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SEC("socket")
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__auxiliary __auxiliary_unpriv
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__naked void dummy_prog_loop2_socket(void)
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{
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asm volatile (" \
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r3 = 1; \
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r2 = %[map_prog2_socket] ll; \
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call %[bpf_tail_call]; \
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r0 = 41; \
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exit; \
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" :
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: __imm(bpf_tail_call),
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__imm_addr(map_prog2_socket)
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: __clobber_all);
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}
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SEC("socket")
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__description("runtime/jit: tail_call within bounds, prog once")
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__success __success_unpriv __retval(42)
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__naked void call_within_bounds_prog_once(void)
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{
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asm volatile (" \
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r3 = 0; \
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r2 = %[map_prog1_socket] ll; \
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call %[bpf_tail_call]; \
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r0 = 1; \
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exit; \
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" :
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: __imm(bpf_tail_call),
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__imm_addr(map_prog1_socket)
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: __clobber_all);
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}
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SEC("socket")
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__description("runtime/jit: tail_call within bounds, prog loop")
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__success __success_unpriv __retval(41)
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__naked void call_within_bounds_prog_loop(void)
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{
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asm volatile (" \
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r3 = 1; \
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r2 = %[map_prog1_socket] ll; \
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call %[bpf_tail_call]; \
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r0 = 1; \
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exit; \
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" :
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: __imm(bpf_tail_call),
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__imm_addr(map_prog1_socket)
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: __clobber_all);
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}
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SEC("socket")
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__description("runtime/jit: tail_call within bounds, no prog")
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__success __success_unpriv __retval(1)
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__naked void call_within_bounds_no_prog(void)
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{
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asm volatile (" \
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r3 = 3; \
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r2 = %[map_prog1_socket] ll; \
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call %[bpf_tail_call]; \
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r0 = 1; \
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exit; \
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" :
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: __imm(bpf_tail_call),
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__imm_addr(map_prog1_socket)
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: __clobber_all);
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}
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SEC("socket")
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__description("runtime/jit: tail_call within bounds, key 2")
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__success __success_unpriv __retval(24)
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__naked void call_within_bounds_key_2(void)
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{
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asm volatile (" \
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r3 = 2; \
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r2 = %[map_prog1_socket] ll; \
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call %[bpf_tail_call]; \
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r0 = 1; \
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exit; \
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" :
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: __imm(bpf_tail_call),
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__imm_addr(map_prog1_socket)
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: __clobber_all);
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}
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SEC("socket")
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__description("runtime/jit: tail_call within bounds, key 2 / key 2, first branch")
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__success __success_unpriv __retval(24)
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__naked void _2_key_2_first_branch(void)
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{
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asm volatile (" \
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r0 = 13; \
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*(u8*)(r1 + %[__sk_buff_cb_0]) = r0; \
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r0 = *(u8*)(r1 + %[__sk_buff_cb_0]); \
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if r0 == 13 goto l0_%=; \
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r3 = 2; \
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r2 = %[map_prog1_socket] ll; \
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goto l1_%=; \
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l0_%=: r3 = 2; \
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r2 = %[map_prog1_socket] ll; \
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l1_%=: call %[bpf_tail_call]; \
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r0 = 1; \
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exit; \
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" :
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: __imm(bpf_tail_call),
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__imm_addr(map_prog1_socket),
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__imm_const(__sk_buff_cb_0, offsetof(struct __sk_buff, cb[0]))
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: __clobber_all);
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}
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SEC("socket")
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__description("runtime/jit: tail_call within bounds, key 2 / key 2, second branch")
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__success __success_unpriv __retval(24)
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__naked void _2_key_2_second_branch(void)
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{
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asm volatile (" \
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r0 = 14; \
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*(u8*)(r1 + %[__sk_buff_cb_0]) = r0; \
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r0 = *(u8*)(r1 + %[__sk_buff_cb_0]); \
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if r0 == 13 goto l0_%=; \
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r3 = 2; \
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r2 = %[map_prog1_socket] ll; \
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goto l1_%=; \
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l0_%=: r3 = 2; \
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r2 = %[map_prog1_socket] ll; \
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l1_%=: call %[bpf_tail_call]; \
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r0 = 1; \
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exit; \
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" :
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: __imm(bpf_tail_call),
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__imm_addr(map_prog1_socket),
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__imm_const(__sk_buff_cb_0, offsetof(struct __sk_buff, cb[0]))
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: __clobber_all);
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}
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SEC("socket")
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__description("runtime/jit: tail_call within bounds, key 0 / key 2, first branch")
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__success __success_unpriv __retval(24)
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__naked void _0_key_2_first_branch(void)
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{
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asm volatile (" \
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r0 = 13; \
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*(u8*)(r1 + %[__sk_buff_cb_0]) = r0; \
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r0 = *(u8*)(r1 + %[__sk_buff_cb_0]); \
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if r0 == 13 goto l0_%=; \
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r3 = 0; \
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r2 = %[map_prog1_socket] ll; \
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goto l1_%=; \
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l0_%=: r3 = 2; \
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r2 = %[map_prog1_socket] ll; \
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l1_%=: call %[bpf_tail_call]; \
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r0 = 1; \
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exit; \
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" :
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: __imm(bpf_tail_call),
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__imm_addr(map_prog1_socket),
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__imm_const(__sk_buff_cb_0, offsetof(struct __sk_buff, cb[0]))
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: __clobber_all);
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}
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SEC("socket")
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__description("runtime/jit: tail_call within bounds, key 0 / key 2, second branch")
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__success __success_unpriv __retval(42)
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__naked void _0_key_2_second_branch(void)
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{
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asm volatile (" \
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r0 = 14; \
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*(u8*)(r1 + %[__sk_buff_cb_0]) = r0; \
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r0 = *(u8*)(r1 + %[__sk_buff_cb_0]); \
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if r0 == 13 goto l0_%=; \
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r3 = 0; \
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r2 = %[map_prog1_socket] ll; \
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goto l1_%=; \
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l0_%=: r3 = 2; \
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r2 = %[map_prog1_socket] ll; \
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l1_%=: call %[bpf_tail_call]; \
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r0 = 1; \
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exit; \
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" :
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: __imm(bpf_tail_call),
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__imm_addr(map_prog1_socket),
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__imm_const(__sk_buff_cb_0, offsetof(struct __sk_buff, cb[0]))
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: __clobber_all);
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}
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SEC("socket")
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__description("runtime/jit: tail_call within bounds, different maps, first branch")
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__success __failure_unpriv __msg_unpriv("tail_call abusing map_ptr")
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__retval(1)
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__naked void bounds_different_maps_first_branch(void)
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{
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asm volatile (" \
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r0 = 13; \
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*(u8*)(r1 + %[__sk_buff_cb_0]) = r0; \
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r0 = *(u8*)(r1 + %[__sk_buff_cb_0]); \
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if r0 == 13 goto l0_%=; \
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r3 = 0; \
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r2 = %[map_prog1_socket] ll; \
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goto l1_%=; \
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l0_%=: r3 = 0; \
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r2 = %[map_prog2_socket] ll; \
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l1_%=: call %[bpf_tail_call]; \
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r0 = 1; \
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exit; \
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" :
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: __imm(bpf_tail_call),
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__imm_addr(map_prog1_socket),
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__imm_addr(map_prog2_socket),
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__imm_const(__sk_buff_cb_0, offsetof(struct __sk_buff, cb[0]))
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: __clobber_all);
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}
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SEC("socket")
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__description("runtime/jit: tail_call within bounds, different maps, second branch")
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__success __failure_unpriv __msg_unpriv("tail_call abusing map_ptr")
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__retval(42)
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__naked void bounds_different_maps_second_branch(void)
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{
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asm volatile (" \
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r0 = 14; \
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*(u8*)(r1 + %[__sk_buff_cb_0]) = r0; \
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r0 = *(u8*)(r1 + %[__sk_buff_cb_0]); \
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if r0 == 13 goto l0_%=; \
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r3 = 0; \
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r2 = %[map_prog1_socket] ll; \
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goto l1_%=; \
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l0_%=: r3 = 0; \
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r2 = %[map_prog2_socket] ll; \
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l1_%=: call %[bpf_tail_call]; \
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r0 = 1; \
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exit; \
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" :
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: __imm(bpf_tail_call),
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__imm_addr(map_prog1_socket),
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__imm_addr(map_prog2_socket),
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__imm_const(__sk_buff_cb_0, offsetof(struct __sk_buff, cb[0]))
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: __clobber_all);
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}
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SEC("socket")
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__description("runtime/jit: tail_call out of bounds")
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__success __success_unpriv __retval(2)
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__naked void tail_call_out_of_bounds(void)
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{
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asm volatile (" \
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r3 = 256; \
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r2 = %[map_prog1_socket] ll; \
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call %[bpf_tail_call]; \
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r0 = 2; \
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exit; \
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" :
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: __imm(bpf_tail_call),
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__imm_addr(map_prog1_socket)
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: __clobber_all);
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}
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SEC("socket")
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__description("runtime/jit: pass negative index to tail_call")
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__success __success_unpriv __retval(2)
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__naked void negative_index_to_tail_call(void)
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{
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asm volatile (" \
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r3 = -1; \
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r2 = %[map_prog1_socket] ll; \
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call %[bpf_tail_call]; \
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r0 = 2; \
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exit; \
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" :
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: __imm(bpf_tail_call),
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__imm_addr(map_prog1_socket)
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: __clobber_all);
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}
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SEC("socket")
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__description("runtime/jit: pass > 32bit index to tail_call")
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__success __success_unpriv __retval(42)
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/* Verifier rewrite for unpriv skips tail call here. */
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__retval_unpriv(2)
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__naked void _32bit_index_to_tail_call(void)
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{
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asm volatile (" \
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r3 = 0x100000000 ll; \
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r2 = %[map_prog1_socket] ll; \
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call %[bpf_tail_call]; \
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r0 = 2; \
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exit; \
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" :
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: __imm(bpf_tail_call),
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__imm_addr(map_prog1_socket)
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: __clobber_all);
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||
|
|
}
|
||
|
|
|
||
|
|
char _license[] SEC("license") = "GPL";
|