diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 6f6d2d511c06f8804664cfab31d6d7dacadad505..9ab7188d8f681ae60cf790dec223b780b1e4831b 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -6946,6 +6946,7 @@ static int set_user_ringbuf_callback_state(struct bpf_verifier_env *env, __mark_reg_not_init(env, &callee->regs[BPF_REG_5]); callee->in_callback_fn = true; + callee->callback_ret_range = tnum_range(0, 1); return 0; } diff --git a/tools/testing/selftests/bpf/progs/user_ringbuf_success.c b/tools/testing/selftests/bpf/progs/user_ringbuf_success.c index 099c23d9aa21b527412c6d36d1ea6d2cf2e1a27d..b39093dd57159eaee7f8f05e683d086a6bb7c64c 100644 --- a/tools/testing/selftests/bpf/progs/user_ringbuf_success.c +++ b/tools/testing/selftests/bpf/progs/user_ringbuf_success.c @@ -47,14 +47,14 @@ record_sample(struct bpf_dynptr *dynptr, void *context) if (status) { bpf_printk("bpf_dynptr_read() failed: %d\n", status); err = 1; - return 0; + return 1; } } else { sample = bpf_dynptr_data(dynptr, 0, sizeof(*sample)); if (!sample) { bpf_printk("Unexpectedly failed to get sample\n"); err = 2; - return 0; + return 1; } stack_sample = *sample; }