X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=kernel%2Fexit.c;h=7f2683a10ac40d2682a4a400091ec61bd2131739;hb=10b06122afcc78468bd1d009633cb71e528acdc5;hp=cce59cb5ee6aececf1b663d39a1de3fb15b4b426;hpb=c6b9e73f2fee8bb86058f296de808b326473456b;p=firefly-linux-kernel-4.4.55.git

diff --git a/kernel/exit.c b/kernel/exit.c
index cce59cb5ee6a..7f2683a10ac4 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -953,7 +953,8 @@ NORET_TYPE void do_exit(long code)
 
 	acct_update_integrals(tsk);
 	/* sync mm's RSS info before statistics gathering */
-	sync_mm_rss(tsk, tsk->mm);
+	if (tsk->mm)
+		sync_mm_rss(tsk, tsk->mm);
 	group_dead = atomic_dec_and_test(&tsk->signal->live);
 	if (group_dead) {
 		hrtimer_cancel(&tsk->signal->real_timer);