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-rw-r--r--kernel/trace/trace_kprobe.c55
1 files changed, 47 insertions, 8 deletions
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
index 7ac728ded964..d6266cad6953 100644
--- a/kernel/trace/trace_kprobe.c
+++ b/kernel/trace/trace_kprobe.c
@@ -1507,28 +1507,67 @@ static int kprobe_trace_selftest_target(int a1, int a2, int a3,
1507 1507
1508static __init int kprobe_trace_self_tests_init(void) 1508static __init int kprobe_trace_self_tests_init(void)
1509{ 1509{
1510 int ret; 1510 int ret, warn = 0;
1511 int (*target)(int, int, int, int, int, int); 1511 int (*target)(int, int, int, int, int, int);
1512 struct trace_probe *tp;
1512 1513
1513 target = kprobe_trace_selftest_target; 1514 target = kprobe_trace_selftest_target;
1514 1515
1515 pr_info("Testing kprobe tracing: "); 1516 pr_info("Testing kprobe tracing: ");
1516 1517
1517 ret = command_trace_probe("p:testprobe kprobe_trace_selftest_target " 1518 ret = command_trace_probe("p:testprobe kprobe_trace_selftest_target "
1518 "$arg1 $arg2 $arg3 $arg4 $stack $stack0"); 1519 "$stack $stack0 +0($stack)");
1519 if (WARN_ON_ONCE(ret)) 1520 if (WARN_ON_ONCE(ret)) {
1520 pr_warning("error enabling function entry\n"); 1521 pr_warning("error on probing function entry.\n");
1522 warn++;
1523 } else {
1524 /* Enable trace point */
1525 tp = find_probe_event("testprobe", KPROBE_EVENT_SYSTEM);
1526 if (WARN_ON_ONCE(tp == NULL)) {
1527 pr_warning("error on getting new probe.\n");
1528 warn++;
1529 } else
1530 probe_event_enable(&tp->call);
1531 }
1521 1532
1522 ret = command_trace_probe("r:testprobe2 kprobe_trace_selftest_target " 1533 ret = command_trace_probe("r:testprobe2 kprobe_trace_selftest_target "
1523 "$retval"); 1534 "$retval");
1524 if (WARN_ON_ONCE(ret)) 1535 if (WARN_ON_ONCE(ret)) {
1525 pr_warning("error enabling function return\n"); 1536 pr_warning("error on probing function return.\n");
1537 warn++;
1538 } else {
1539 /* Enable trace point */
1540 tp = find_probe_event("testprobe2", KPROBE_EVENT_SYSTEM);
1541 if (WARN_ON_ONCE(tp == NULL)) {
1542 pr_warning("error on getting new probe.\n");
1543 warn++;
1544 } else
1545 probe_event_enable(&tp->call);
1546 }
1547
1548 if (warn)
1549 goto end;
1526 1550
1527 ret = target(1, 2, 3, 4, 5, 6); 1551 ret = target(1, 2, 3, 4, 5, 6);
1528 1552
1529 cleanup_all_probes(); 1553 ret = command_trace_probe("-:testprobe");
1554 if (WARN_ON_ONCE(ret)) {
1555 pr_warning("error on deleting a probe.\n");
1556 warn++;
1557 }
1558
1559 ret = command_trace_probe("-:testprobe2");
1560 if (WARN_ON_ONCE(ret)) {
1561 pr_warning("error on deleting a probe.\n");
1562 warn++;
1563 }
1530 1564
1531 pr_cont("OK\n"); 1565end:
1566 cleanup_all_probes();
1567 if (warn)
1568 pr_cont("NG: Some tests are failed. Please check them.\n");
1569 else
1570 pr_cont("OK\n");
1532 return 0; 1571 return 0;
1533} 1572}
1534 1573