diff options
| -rw-r--r-- | kernel/fork.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index fd65bca38a93..2deaf481efab 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -1040,6 +1040,12 @@ static struct task_struct *copy_process(unsigned long clone_flags, if (p->binfmt && !try_module_get(p->binfmt->module)) goto bad_fork_cleanup_put_domain; + if (pid != &init_struct_pid) { + pid = alloc_pid(); + if (!pid) + goto bad_fork_put_binfmt_module; + } + p->did_exec = 0; delayacct_tsk_init(p); /* Must remain after dup_task_struct() */ copy_flags(clone_flags, p); @@ -1331,6 +1337,9 @@ bad_fork_cleanup_cgroup: cgroup_exit(p, cgroup_callbacks_done); bad_fork_cleanup_delays_binfmt: delayacct_tsk_free(p); + if (pid != &init_struct_pid) + free_pid(pid); +bad_fork_put_binfmt_module: if (p->binfmt) module_put(p->binfmt->module); bad_fork_cleanup_put_domain: @@ -1395,19 +1404,16 @@ long do_fork(unsigned long clone_flags, { struct task_struct *p; int trace = 0; - struct pid *pid = alloc_pid(); long nr; - if (!pid) - return -EAGAIN; - nr = pid->nr; if (unlikely(current->ptrace)) { trace = fork_traceflag (clone_flags); if (trace) clone_flags |= CLONE_PTRACE; } - p = copy_process(clone_flags, stack_start, regs, stack_size, parent_tidptr, child_tidptr, pid); + p = copy_process(clone_flags, stack_start, regs, stack_size, + parent_tidptr, child_tidptr, NULL); /* * Do this prior waking up the new thread - the thread pointer * might get invalid after that point, if the thread exits quickly. @@ -1415,6 +1421,8 @@ long do_fork(unsigned long clone_flags, if (!IS_ERR(p)) { struct completion vfork; + nr = pid_nr(task_pid(p)); + if (clone_flags & CLONE_VFORK) { p->vfork_done = &vfork; init_completion(&vfork); @@ -1448,7 +1456,6 @@ long do_fork(unsigned long clone_flags, } } } else { - free_pid(pid); nr = PTR_ERR(p); } return nr; |