Merge tag 'gpio-v4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw...

[linux-2.6-microblaze.git] / kernel / trace / bpf_trace.c

diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c
index fc2838a..c0a9e31 100644 (file)
--- a/kernel/trace/bpf_trace.c
+++ b/kernel/trace/bpf_trace.c
@@ -872,6 +872,8 @@ int perf_event_query_prog_array(struct perf_event *event, void __user *info)
                return -EINVAL;
        if (copy_from_user(&query, uquery, sizeof(query)))
                return -EFAULT;
+       if (query.ids_len > BPF_TRACE_MAX_PROGS)
+               return -E2BIG;
 
        mutex_lock(&bpf_event_mutex);
        ret = bpf_prog_array_copy_info(event->tp_event->prog_array,