From: Josh Poimboeuf <jpoimboe@kernel.org>
Date: Tue, 14 Feb 2023 07:05:55 +0000 (-0800)
Subject: sched/idle: Make sure weak version of arch_cpu_idle_dead() doesn't return
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=dfb0f170cadb03da4f408ae53cc2908120e1f90e;p=linux.git

sched/idle: Make sure weak version of arch_cpu_idle_dead() doesn't return

arch_cpu_idle_dead() should never return.  Make it so.

Link: https://lore.kernel.org/r/cf5ad95eef50f7704bb30e7770c59bfe23372af7.1676358308.git.jpoimboe@kernel.org
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
---

diff --git a/kernel/sched/idle.c b/kernel/sched/idle.c
index e9ef66be2870e..56e152f06d0f9 100644
--- a/kernel/sched/idle.c
+++ b/kernel/sched/idle.c
@@ -75,7 +75,7 @@ static noinline int __cpuidle cpu_idle_poll(void)
 void __weak arch_cpu_idle_prepare(void) { }
 void __weak arch_cpu_idle_enter(void) { }
 void __weak arch_cpu_idle_exit(void) { }
-void __weak arch_cpu_idle_dead(void) { }
+void __weak arch_cpu_idle_dead(void) { while (1); }
 void __weak arch_cpu_idle(void)
 {
 	cpu_idle_force_poll = 1;