xref: /OK3568_Linux_fs/kernel/tools/testing/selftests/bpf/verifier/uninit.c (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun {
2*4882a593Smuzhiyun 	"read uninitialized register",
3*4882a593Smuzhiyun 	.insns = {
4*4882a593Smuzhiyun 	BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
5*4882a593Smuzhiyun 	BPF_EXIT_INSN(),
6*4882a593Smuzhiyun 	},
7*4882a593Smuzhiyun 	.errstr = "R2 !read_ok",
8*4882a593Smuzhiyun 	.result = REJECT,
9*4882a593Smuzhiyun },
10*4882a593Smuzhiyun {
11*4882a593Smuzhiyun 	"read invalid register",
12*4882a593Smuzhiyun 	.insns = {
13*4882a593Smuzhiyun 	BPF_MOV64_REG(BPF_REG_0, -1),
14*4882a593Smuzhiyun 	BPF_EXIT_INSN(),
15*4882a593Smuzhiyun 	},
16*4882a593Smuzhiyun 	.errstr = "R15 is invalid",
17*4882a593Smuzhiyun 	.result = REJECT,
18*4882a593Smuzhiyun },
19*4882a593Smuzhiyun {
20*4882a593Smuzhiyun 	"program doesn't init R0 before exit",
21*4882a593Smuzhiyun 	.insns = {
22*4882a593Smuzhiyun 	BPF_ALU64_REG(BPF_MOV, BPF_REG_2, BPF_REG_1),
23*4882a593Smuzhiyun 	BPF_EXIT_INSN(),
24*4882a593Smuzhiyun 	},
25*4882a593Smuzhiyun 	.errstr = "R0 !read_ok",
26*4882a593Smuzhiyun 	.result = REJECT,
27*4882a593Smuzhiyun },
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun 	"program doesn't init R0 before exit in all branches",
30*4882a593Smuzhiyun 	.insns = {
31*4882a593Smuzhiyun 	BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 2),
32*4882a593Smuzhiyun 	BPF_MOV64_IMM(BPF_REG_0, 1),
33*4882a593Smuzhiyun 	BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 2),
34*4882a593Smuzhiyun 	BPF_EXIT_INSN(),
35*4882a593Smuzhiyun 	},
36*4882a593Smuzhiyun 	.errstr = "R0 !read_ok",
37*4882a593Smuzhiyun 	.errstr_unpriv = "R1 pointer comparison",
38*4882a593Smuzhiyun 	.result = REJECT,
39*4882a593Smuzhiyun },
40