4.10-stable review patch. If anyone has any objections, please let me know. ------------------ 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 (;;); }