1 files changed, 9 insertions, 1 deletions

diff --git a/kernel/exit.c b/kernel/exit.c
index e47ee8a06135..60d6fdcc9265 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -359,8 +359,10 @@ void __set_special_pids(struct pid *pid)
 {
         struct task_struct *curr = current->group_leader;
 
-        if (task_session(curr) != pid)
+        if (task_session(curr) != pid) {
                 change_pid(curr, PIDTYPE_SID, pid);
+                proc_sid_connector(curr);
+        }
 
         if (task_pgrp(curr) != pid)
                 change_pid(curr, PIDTYPE_PGID, pid);
@@ -945,6 +947,8 @@ NORET_TYPE void do_exit(long code)
         if (group_dead) {
                 hrtimer_cancel(&tsk->signal->real_timer);
                 exit_itimers(tsk->signal);
+                if (tsk->mm)
+                        setmax_mm_hiwater_rss(&tsk->signal->maxrss, tsk->mm);
         }
         acct_collect(code, group_dead);
         if (group_dead)
@@ -1208,6 +1212,7 @@ static int wait_task_zombie(struct wait_opts *wo, struct task_struct *p)
         if (likely(!traced) && likely(!task_detached(p))) {
                 struct signal_struct *psig;
                 struct signal_struct *sig;
+                unsigned long maxrss;
 
                 /*
                  * The resource counters for the group leader are in its
@@ -1256,6 +1261,9 @@ static int wait_task_zombie(struct wait_opts *wo, struct task_struct *p)
                 psig->coublock +=
                         task_io_get_oublock(p) +
                         sig->oublock + sig->coublock;
+                maxrss = max(sig->maxrss, sig->cmaxrss);
+                if (psig->cmaxrss < maxrss)
+                        psig->cmaxrss = maxrss;
                 task_io_accounting_add(&psig->ioac, &p->ioac);
                 task_io_accounting_add(&psig->ioac, &sig->ioac);
                 spin_unlock_irq(&p->real_parent->sighand->siglock);