On Thu, 5 May 2022 20:19:07 +0800 Tiezhu Yang <yangtiezhu@xxxxxxxxxxx> wrote: > It may lead to kernel panic when execute the following testcase on mips: > > # ./ftracetest test.d/kprobe/multiple_kprobes.tc > > A preliminary analysis shows that the issue is related with > > echo 1 > events/kprobes/enable > > after add the 256 probe points. > > In order to find the root cause, I want to verify which probe point has > problem, so it is necessary to save kprobe_events to test log. > > With this patch, we can get the 256 probe points in the test log through > the following command: > > # ./ftracetest test.d/kprobe/multiple_kprobes.tc -vvv -k This looks good to me. :) Acked-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx> Thank you, > > Signed-off-by: Tiezhu Yang <yangtiezhu@xxxxxxxxxxx> > --- > tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc b/tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc > index 312d237..be754f5 100644 > --- a/tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc > +++ b/tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc > @@ -25,6 +25,8 @@ if [ $L -ne 256 ]; then > exit_fail > fi > > +cat kprobe_events >> $testlog > + > echo 1 > events/kprobes/enable > echo 0 > events/kprobes/enable > echo > kprobe_events > -- > 2.1.0 > -- Masami Hiramatsu <mhiramat@xxxxxxxxxx>
