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-rw-r--r--kernel/exit.c14
1 files changed, 6 insertions, 8 deletions
diff --git a/kernel/exit.c b/kernel/exit.c
index 9c9526d..20875d6 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -973,8 +973,7 @@ static int wait_noreap_copyout(struct wait_opts *wo, struct task_struct *p,
*/
static int wait_task_zombie(struct wait_opts *wo, struct task_struct *p)
{
- unsigned long state;
- int retval, status, traced;
+ int state, retval, status;
pid_t pid = task_pid_vnr(p);
uid_t uid = from_kuid_munged(current_user_ns(), task_uid(p));
struct siginfo __user *infop;
@@ -999,19 +998,18 @@ static int wait_task_zombie(struct wait_opts *wo, struct task_struct *p)
}
return wait_noreap_copyout(wo, p, pid, uid, why, status);
}
-
- traced = ptrace_reparented(p);
/*
* Move the task's state to DEAD/TRACE, only one thread can do this.
*/
- state = traced && thread_group_leader(p) ? EXIT_TRACE : EXIT_DEAD;
+ state = (ptrace_reparented(p) && thread_group_leader(p)) ?
+ EXIT_TRACE : EXIT_DEAD;
if (cmpxchg(&p->exit_state, EXIT_ZOMBIE, state) != EXIT_ZOMBIE)
return 0;
+
/*
- * It can be ptraced but not reparented, check
- * thread_group_leader() to filter out sub-threads.
+ * Check thread_group_leader() to exclude the traced sub-threads.
*/
- if (likely(!traced) && thread_group_leader(p)) {
+ if (state == EXIT_DEAD && thread_group_leader(p)) {
struct signal_struct *psig;
struct signal_struct *sig;
unsigned long maxrss;
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