{
        "BPF_ATOMIC bounds propagation, mem->reg",
        .insns = {
                /* a = 0; */
                /*
                 * Note this is implemented with two separate instructions,
                 * where you might think one would suffice:
                 *
                 * BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
                 *
                 * This is because BPF_ST_MEM doesn't seem to set the stack slot
                 * type to 0 when storing an immediate.
                 */
                BPF_MOV64_IMM(BPF_REG_0, 0),
                BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_0, -8),
                /* b = atomic_fetch_add(&a, 1); */
                BPF_MOV64_IMM(BPF_REG_1, 1),
                BPF_ATOMIC_OP(BPF_DW, BPF_ADD | BPF_FETCH, BPF_REG_10, BPF_REG_1, -8),
                /* Verifier should be able to tell that this infinite loop isn't reachable. */
                /* if (b) while (true) continue; */
                BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, -1),
                BPF_EXIT_INSN(),
        },
        .result = ACCEPT,
        .result_unpriv = REJECT,
        .errstr_unpriv = "back-edge",
},