diff options
| -rw-r--r-- | arch/um/kernel/reboot.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/um/kernel/reboot.c b/arch/um/kernel/reboot.c index 66d754c46e7b..1411f4e79f9a 100644 --- a/arch/um/kernel/reboot.c +++ b/arch/um/kernel/reboot.c @@ -25,10 +25,13 @@ static void kill_off_processes(void) read_lock(&tasklist_lock); for_each_process(p) { - if (p->mm == NULL) + task_lock(p); + if (!p->mm) { + task_unlock(p); continue; - + } pid = p->mm->context.id.u.pid; + task_unlock(p); os_kill_ptraced_process(pid, 1); } read_unlock(&tasklist_lock); |