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parisc: Prevent panic at system halt

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When issuing a "shutdown -h now", the reboot syscall calls kernel_halt()
which shouldn't return, otherwise one gets this panic:

reboot: System halted
Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000000
CPU: 0 PID: 1 Comm: systemd-shutdow Not tainted 4.16.0-32bit+ #560
Backtrace:
 [<1018a694>] show_stack+0x18/0x28
 [<106e68a8>] dump_stack+0x80/0x10c
 [<101a4df8>] panic+0xfc/0x290
 [<101a90b8>] do_exit+0x73c/0x914
 [<101c7e38>] SyS_reboot+0x190/0x1d4
 [<1017e444>] syscall_exit+0x0/0x14

Fix it by letting machine_halt() call machine_power_off() which doesn't
return.

Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Helge Deller 2018-04-11 22:27:07 +02:00
parent 71d577db01
commit 6769828703
1 changed files with 5 additions and 8 deletions
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13
arch/parisc/kernel/process.c
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@ -112,14 +112,6 @@ void machine_restart(char *cmd)
}
void machine_halt(void)
{
/*
** The LED/ChassisCodes are updated by the led_halt()
** function, called by the reboot notifier chain.
*/
}
void (*chassis_power_off)(void);
/*
@ -158,6 +150,11 @@ void machine_power_off(void)
void (*pm_power_off)(void);
EXPORT_SYMBOL(pm_power_off);
void machine_halt(void)
{
machine_power_off();
}
void flush_thread(void)
{
/* Only needs to handle fpu stuff or perf monitors.