.result = REJECT,
.flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
+{
+ "check known subreg with unknown reg",
+ .insns = {
+ BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32),
+ BPF_ALU64_IMM(BPF_LSH, BPF_REG_0, 32),
+ BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 1),
+ BPF_ALU64_IMM(BPF_AND, BPF_REG_0, 0xFFFF1234),
+ /* Upper bits are unknown but AND above masks out 1 zero'ing lower bits */
+ BPF_JMP32_IMM(BPF_JLT, BPF_REG_0, 1, 1),
+ BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_1, 512),
+ BPF_MOV64_IMM(BPF_REG_0, 0),
+ BPF_EXIT_INSN(),
+ },
+ .result = ACCEPT,
+ .retval = 0
+},