This is a note to let you know that I've just added the patch titled
parisc: Avoid stalled CPU warnings after system shutdown
to the 4.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
parisc-avoid-stalled-cpu-warnings-after-system-shutdown.patch
and it can be found in the queue-4.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 476e75a44b56038bee9207242d4bc718f6b4de06 Mon Sep 17 00:00:00 2001
From: Helge Deller <deller@xxxxxx>
Date: Wed, 29 Mar 2017 08:25:30 +0200
Subject: parisc: Avoid stalled CPU warnings after system shutdown
From: Helge Deller <deller@xxxxxx>
commit 476e75a44b56038bee9207242d4bc718f6b4de06 upstream.
Commit 73580dac7618 ("parisc: Fix system shutdown halt") introduced an endless
loop for systems which don't provide a software power off function. But the
soft lockup detector will detect this and report stalled CPUs after some time.
Avoid those unwanted warnings by disabling the soft lockup detector.
Fixes: 73580dac7618 ("parisc: Fix system shutdown halt")
Signed-off-by: Helge Deller <deller@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/parisc/kernel/process.c | 2 ++
1 file changed, 2 insertions(+)
--- a/arch/parisc/kernel/process.c
+++ b/arch/parisc/kernel/process.c
@@ -140,6 +140,8 @@ void machine_power_off(void)
printk(KERN_EMERG "System shut down completed.\n"
"Please power this system off now.");
+ /* prevent soft lockup/stalled CPU messages for endless loop. */
+ rcu_sysrq_start();
for (;;);
}
Patches currently in stable-queue which might be from deller@xxxxxx are
queue-4.10/parisc-fix-access-fault-handling-in-pa_memcpy.patch
queue-4.10/parisc-clean-up-fixup-routines-for-get_user-put_user.patch
queue-4.10/parisc-avoid-stalled-cpu-warnings-after-system-shutdown.patch