coredump: ensure all coredumping tasks have SIGNAL_GROUP_COREDUMP

[firefly-linux-kernel-4.4.55.git] / fs / coredump.c

diff --git a/fs/coredump.c b/fs/coredump.c
index a8f75640ac86ec2d29cd55a253b2c3c12c7bac9b..c66bb0572265c1490adbb48c6cf671dd711db517 100644 (file)
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -280,11 +280,13 @@ out:
        return ispipe;
 }
 
-static int zap_process(struct task_struct *start, int exit_code)
+static int zap_process(struct task_struct *start, int exit_code, int flags)
 {
        struct task_struct *t;
        int nr = 0;
 
+       /* ignore all signals except SIGKILL, see prepare_signal() */
+       start->signal->flags = SIGNAL_GROUP_COREDUMP | flags;
        start->signal->group_exit_code = exit_code;
        start->signal->group_stop_count = 0;
 
@@ -311,10 +313,8 @@ static int zap_threads(struct task_struct *tsk, struct mm_struct *mm,
        spin_lock_irq(&tsk->sighand->siglock);
        if (!signal_group_exit(tsk->signal)) {
                mm->core_state = core_state;
-               nr = zap_process(tsk, exit_code);
                tsk->signal->group_exit_task = tsk;
-               /* ignore all signals except SIGKILL, see prepare_signal() */
-               tsk->signal->flags = SIGNAL_GROUP_COREDUMP;
+               nr = zap_process(tsk, exit_code, 0);
                clear_tsk_thread_flag(tsk, TIF_SIGPENDING);
        }
        spin_unlock_irq(&tsk->sighand->siglock);
@@ -365,8 +365,8 @@ static int zap_threads(struct task_struct *tsk, struct mm_struct *mm,
                        if (p->mm) {
                                if (unlikely(p->mm == mm)) {
                                        lock_task_sighand(p, &flags);
-                                       nr += zap_process(p, exit_code);
-                                       p->signal->flags = SIGNAL_GROUP_EXIT;
+                                       nr += zap_process(p, exit_code,
+                                                         SIGNAL_GROUP_EXIT);
                                        unlock_task_sighand(p, &flags);
                                }
                                break;