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Diffstat (limited to 'kernel/exit.c')
-rw-r--r--kernel/exit.c25
1 files changed, 22 insertions, 3 deletions
diff --git a/kernel/exit.c b/kernel/exit.c
index ffba5df4abd5..6e8ab67325a7 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -53,6 +53,9 @@
#include <linux/oom.h>
#include <linux/writeback.h>
#include <linux/shm.h>
+#include <linux/kcov.h>
+
+#include "sched/tune.h"
#include <asm/uaccess.h>
#include <asm/unistd.h>
@@ -450,12 +453,14 @@ static struct task_struct *find_alive_thread(struct task_struct *p)
return NULL;
}
-static struct task_struct *find_child_reaper(struct task_struct *father)
+static struct task_struct *find_child_reaper(struct task_struct *father,
+ struct list_head *dead)
__releases(&tasklist_lock)
__acquires(&tasklist_lock)
{
struct pid_namespace *pid_ns = task_active_pid_ns(father);
struct task_struct *reaper = pid_ns->child_reaper;
+ struct task_struct *p, *n;
if (likely(reaper != father))
return reaper;
@@ -471,6 +476,12 @@ static struct task_struct *find_child_reaper(struct task_struct *father)
panic("Attempted to kill init! exitcode=0x%08x\n",
father->signal->group_exit_code ?: father->exit_code);
}
+
+ list_for_each_entry_safe(p, n, dead, ptrace_entry) {
+ list_del_init(&p->ptrace_entry);
+ release_task(p);
+ }
+
zap_pid_ns_processes(pid_ns);
write_lock_irq(&tasklist_lock);
@@ -557,7 +568,7 @@ static void forget_original_parent(struct task_struct *father,
exit_ptrace(father, dead);
/* Can drop and reacquire tasklist_lock */
- reaper = find_child_reaper(father);
+ reaper = find_child_reaper(father, dead);
if (list_empty(&father->children))
return;
@@ -657,6 +668,7 @@ void do_exit(long code)
TASKS_RCU(int tasks_rcu_i);
profile_task_exit(tsk);
+ kcov_task_exit(tsk);
WARN_ON(blk_needs_flush_plug(tsk));
@@ -699,6 +711,9 @@ void do_exit(long code)
}
exit_signals(tsk); /* sets PF_EXITING */
+
+ schedtune_exit_task(tsk);
+
/*
* tsk->flags are checked in the futex code to protect against
* an exiting task cleaning up the robust pi futexes.
@@ -746,7 +761,7 @@ void do_exit(long code)
disassociate_ctty(1);
exit_task_namespaces(tsk);
exit_task_work(tsk);
- exit_thread();
+ exit_thread(tsk);
/*
* Flush inherited counters to the parent - before the parent
@@ -1608,6 +1623,10 @@ SYSCALL_DEFINE4(wait4, pid_t, upid, int __user *, stat_addr,
__WNOTHREAD|__WCLONE|__WALL))
return -EINVAL;
+ /* -INT_MIN is not defined */
+ if (upid == INT_MIN)
+ return -ESRCH;
+
if (upid == -1)
type = PIDTYPE_MAX;
else if (upid < 0) {