Comment 2 for bug 1696165

== Without the patch ==
ubuntu@ubuntu:~/testing/mce-test/cases/function/hwpoison$ sudo ./run_hugepage_overcommit.sh
[sudo] password for ubuntu:

***************************************************************************
Pay attention:

This test checks that hugepage soft-offlining works under overcommitting.
***************************************************************************

-------------------------------------
TestCase ./thugetlb_overcommit 1
[ 1628.254754] NMI watchdog: BUG: soft lockup - CPU#8 stuck for 22s! [thugetlb_overco:3154]
[ 1660.668149] INFO: rcu_sched self-detected stall on CPU
[ 1660.672210] INFO: rcu_sched detected stalls on CPUs/tasks:
[ 1660.672216] 8-...: (14998 ticks this GP) idle=72f/140000000000001/0 softirq=1348/1348 fqs=7389
[ 1660.672217] (detected by 18, t=15002 jiffies, g=3147, c=3146, q=503)
[ 1660.692986] 8-...: (14998 ticks this GP) idle=72f/140000000000001/0 softirq=1348/1348 fqs=7392
[ 1660.701752] (t=15009 jiffies g=3147 c=3146 q=503)

[ 1840.695633] INFO: rcu_sched self-detected stall on CPU
[ 1840.699810] INFO: rcu_sched detected stalls on CPUs/tasks:
[ 1840.699818] 8-...: (59995 ticks this GP) idle=72f/140000000000001/0 softirq=1348/1348 fqs=27921
[ 1840.699818] (t=60007 jiffies g=3147 c=3146 q=1101)
[ 1840.719086] 8-...: (60000 ticks this GP) idle=72f/140000000000000/0 softirq=1348/1348 fqs=27921
[ 1840.727935] (detected by 1, t=60007 jiffies, g=3147, c=3146, q=1101)