diff options
Diffstat (limited to 'kernel/exit.c')
| -rw-r--r-- | kernel/exit.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/kernel/exit.c b/kernel/exit.c index 28d9feedfd27..fd0e067952ab 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -22,6 +22,7 @@ #include <linux/file.h> #include <linux/binfmts.h> #include <linux/nsproxy.h> +#include <linux/pid_namespace.h> #include <linux/ptrace.h> #include <linux/profile.h> #include <linux/mount.h> @@ -48,7 +49,6 @@ #include <asm/mmu_context.h> extern void sem_exit (void); -extern struct task_struct *child_reaper; static void exit_mm(struct task_struct * tsk); @@ -260,7 +260,8 @@ static int has_stopped_jobs(int pgrp) } /** - * reparent_to_init - Reparent the calling kernel thread to the init task. + * reparent_to_init - Reparent the calling kernel thread to the init task + * of the pid space that the thread belongs to. * * If a kernel thread is launched as a result of a system call, or if * it ever exits, it should generally reparent itself to init so that @@ -278,8 +279,8 @@ static void reparent_to_init(void) ptrace_unlink(current); /* Reparent to init */ remove_parent(current); - current->parent = child_reaper; - current->real_parent = child_reaper; + current->parent = child_reaper(current); + current->real_parent = child_reaper(current); add_parent(current); /* Set the exit signal to SIGCHLD so we signal init on exit */ @@ -662,7 +663,8 @@ reparent_thread(struct task_struct *p, struct task_struct *father, int traced) * When we die, we re-parent all our children. * Try to give them to another thread in our thread * group, and if no such member exists, give it to - * the global child reaper process (ie "init") + * the child reaper process (ie "init") in our pid + * space. */ static void forget_original_parent(struct task_struct *father, struct list_head *to_release) @@ -673,7 +675,7 @@ forget_original_parent(struct task_struct *father, struct list_head *to_release) do { reaper = next_thread(reaper); if (reaper == father) { - reaper = child_reaper; + reaper = child_reaper(father); break; } } while (reaper->exit_state); @@ -859,8 +861,13 @@ fastcall NORET_TYPE void do_exit(long code) panic("Aiee, killing interrupt handler!"); if (unlikely(!tsk->pid)) panic("Attempted to kill the idle task!"); - if (unlikely(tsk == child_reaper)) - panic("Attempted to kill init!"); + if (unlikely(tsk == child_reaper(tsk))) { + if (tsk->nsproxy->pid_ns != &init_pid_ns) + tsk->nsproxy->pid_ns->child_reaper = init_pid_ns.child_reaper; + else + panic("Attempted to kill init!"); + } + if (unlikely(current->ptrace & PT_TRACE_EXIT)) { current->ptrace_message = code; |