diff options
| -rw-r--r-- | kernel/watchdog_hld.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/kernel/watchdog_hld.c b/kernel/watchdog_hld.c index b2931154b5f2..204a8cadb717 100644 --- a/kernel/watchdog_hld.c +++ b/kernel/watchdog_hld.c @@ -220,8 +220,13 @@ void hardlockup_detector_perf_cleanup(void) for_each_cpu(cpu, &dead_events_mask) { struct perf_event *event = per_cpu(watchdog_ev, cpu); + /* + * Required because for_each_cpu() reports unconditionally + * CPU0 as set on UP kernels. Sigh. + */ + if (event) + perf_event_release_kernel(event); per_cpu(watchdog_ev, cpu) = NULL; - perf_event_release_kernel(event); } cpumask_clear(&dead_events_mask); } |