diff options
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 17da35fa77e7..5957cf8b4c4b 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -315,6 +315,9 @@ static void account_kernel_stack(struct task_struct *tsk, int account) static void release_task_stack(struct task_struct *tsk) { + if (WARN_ON(tsk->state != TASK_DEAD)) + return; /* Better to leak the stack than to free prematurely */ + account_kernel_stack(tsk, -1); arch_release_thread_stack(tsk->stack); free_thread_stack(tsk); @@ -351,6 +354,8 @@ void free_task(struct task_struct *tsk) ftrace_graph_exit_task(tsk); put_seccomp_filter(tsk); arch_release_task_struct(tsk); + if (tsk->flags & PF_KTHREAD) + free_kthread_struct(tsk); free_task_struct(tsk); } EXPORT_SYMBOL(free_task); @@ -1550,7 +1555,9 @@ static __latent_entropy struct task_struct *copy_process( init_sigpending(&p->pending); p->utime = p->stime = p->gtime = 0; +#ifdef CONFIG_ARCH_HAS_SCALED_CPUTIME p->utimescaled = p->stimescaled = 0; +#endif prev_cputime_init(&p->prev_cputime); #ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN @@ -1864,6 +1871,7 @@ bad_fork_cleanup_count: atomic_dec(&p->cred->user->processes); exit_creds(p); bad_fork_free: + p->state = TASK_DEAD; put_task_stack(p); free_task(p); fork_out: |