Hmmm... We got a race condition since quiet_vmstat touches cpu_stat_off
which may not be allocated early in the bootup sequence. Causes oopses on
boot.
Subject: vmstat: quieting vmstat requires a running system
Do not do anything unless the system is actually running. Otherwise
we may crash on bootup.
Signed-off-by: Christoph Lameter <cl@xxxxxxxxx>
Index: linux/mm/vmstat.c
===================================================================
--- linux.orig/mm/vmstat.c
+++ linux/mm/vmstat.c
@@ -1270,6 +1270,9 @@ static void vmstat_update(struct work_st
*/
void quiet_vmstat(void)
{
+ if (system_state != SYSTEM_RUNNING)
+ return;
+
do {
if (!cpumask_test_and_set_cpu(smp_processor_id(), cpu_stat_off))
cancel_delayed_work(this_cpu_ptr(&vmstat_work));
--
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