1 files changed, 14 insertions, 0 deletions

diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 1dba568e1941..5e17de984dc8 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -31,6 +31,7 @@ static char		*vmlinux = "vmlinux";
 static char             default_sort_order[] = "comm,symbol";
 static char             *sort_order = default_sort_order;
 
+static int              force;
 static int              input;
 static int              show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV;
 
@@ -980,6 +981,13 @@ process_fork_event(event_t *event, unsigned long offset, unsigned long head)
                 (void *)(long)(event->header.size),
                 event->fork.pid, event->fork.ppid);
 
+        /*
+         * A thread clone will have the same PID for both
+         * parent and child.
+         */
+        if (thread == parent)
+                return 0;
+
         if (!thread || !parent || thread__fork(thread, parent)) {
                 dprintf("problem processing PERF_EVENT_FORK, skipping event.\n");
                 return -1;
@@ -1327,6 +1335,11 @@ static int __cmd_annotate(void)
                 exit(-1);
         }
 
+        if (!force && (stat.st_uid != geteuid())) {
+                fprintf(stderr, "file: %s not owned by current user\n", input_name);
+                exit(-1);
+        }
+
         if (!stat.st_size) {
                 fprintf(stderr, "zero-sized file, nothing to do!\n");
                 exit(0);
@@ -1432,6 +1445,7 @@ static const struct option options[] = {
                     "input file name"),
         OPT_STRING('s', "symbol", &sym_hist_filter, "symbol",
                     "symbol to annotate"),
+        OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
         OPT_BOOLEAN('v', "verbose", &verbose,
                     "be more verbose (show symbol address, etc)"),
         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,