From 6a3dd40539c1804db8b1fe1684afa5fa111636fe Mon Sep 17 00:00:00 2001 From: John Kacur Date: Thu, 11 Nov 2021 08:56:54 -0500 Subject: [PATCH] rt-tests: deadline_tests: Null check to prevent floating point exception Fix a floating point exception that can occur if sd->nr_adjust is 0 by checking it before performing a division by zero. Signed-off-by: John Kacur --- src/sched_deadline/deadline_test.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/src/sched_deadline/deadline_test.c b/src/sched_deadline/deadline_test.c index 53abd4d2ca6b..b7e1e045b57c 100644 --- a/src/sched_deadline/deadline_test.c +++ b/src/sched_deadline/deadline_test.c @@ -2050,8 +2050,10 @@ int main(int argc, char **argv) printf("missed deadlines = %d\n", sd->missed_deadlines); printf("missed periods = %d\n", sd->missed_periods); printf("Total adjustments = %lld us\n", sd->total_adjust); - printf("# adjustments = %lld avg: %lld us\n", - sd->nr_adjust, sd->total_adjust / sd->nr_adjust); + if (sd->nr_adjust) { + printf("# adjustments = %lld avg: %lld us\n", + sd->nr_adjust, sd->total_adjust / sd->nr_adjust); + } printf("deadline : %lld us\n", sd->deadline_us); printf("runtime : %lld us\n", sd->runtime_us); printf("nr_periods : %lld\n", sd->nr_periods); -- 2.31.1