: fix sem list soft lockup issue
sem should be delete from the previous sem list then add to the new sem list.
If adding sem to the list which is same as previous one, it will cause endless
loop when traverses the sem list.
[ 264.133878] NMI watchdog: BUG: soft lockup - CPU#5 stuck for 22s
sem should be delete from the previous sem list
then add to the new sem list.
If adding sem to the list which is same as previous one,
it will cause endless loop when traverses the sem list.
[ 264.133878] NMI watchdog: BUG: soft lockup - CPU#5 stuck for 22s!
...
[ 264.133928] task: a216ffbf
