diff options
Diffstat (limited to 'kernel/events')
| -rw-r--r-- | kernel/events/core.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index d2b354991bf5..07d51f95d6a6 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -10068,26 +10068,30 @@ static inline bool perf_event_is_tracing(struct perf_event *event) int perf_event_set_bpf_prog(struct perf_event *event, struct bpf_prog *prog, u64 bpf_cookie) { - bool is_kprobe, is_tracepoint, is_syscall_tp; + bool is_kprobe, is_uprobe, is_tracepoint, is_syscall_tp; if (!perf_event_is_tracing(event)) return perf_event_set_bpf_handler(event, prog, bpf_cookie); - is_kprobe = event->tp_event->flags & TRACE_EVENT_FL_UKPROBE; + is_kprobe = event->tp_event->flags & TRACE_EVENT_FL_KPROBE; + is_uprobe = event->tp_event->flags & TRACE_EVENT_FL_UPROBE; is_tracepoint = event->tp_event->flags & TRACE_EVENT_FL_TRACEPOINT; is_syscall_tp = is_syscall_trace_event(event->tp_event); - if (!is_kprobe && !is_tracepoint && !is_syscall_tp) + if (!is_kprobe && !is_uprobe && !is_tracepoint && !is_syscall_tp) /* bpf programs can only be attached to u/kprobe or tracepoint */ return -EINVAL; - if ((is_kprobe && prog->type != BPF_PROG_TYPE_KPROBE) || + if (((is_kprobe || is_uprobe) && prog->type != BPF_PROG_TYPE_KPROBE) || (is_tracepoint && prog->type != BPF_PROG_TYPE_TRACEPOINT) || (is_syscall_tp && prog->type != BPF_PROG_TYPE_TRACEPOINT)) return -EINVAL; + if (prog->type == BPF_PROG_TYPE_KPROBE && prog->aux->sleepable && !is_uprobe) + /* only uprobe programs are allowed to be sleepable */ + return -EINVAL; + /* Kprobe override only works for kprobes, not uprobes. */ - if (prog->kprobe_override && - !(event->tp_event->flags & TRACE_EVENT_FL_KPROBE)) + if (prog->kprobe_override && !is_kprobe) return -EINVAL; if (is_tracepoint || is_syscall_tp) { |