diff options
| -rw-r--r-- | kernel/fork.c | 5 | ||||
| -rw-r--r-- | kernel/pid.c | 15 |
2 files changed, 11 insertions, 9 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index f2c1e7352298..d778016ac1e3 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -1403,10 +1403,11 @@ static struct task_struct *copy_process(unsigned long clone_flags, goto bad_fork_cleanup_io; if (pid != &init_struct_pid) { - retval = -ENOMEM; pid = alloc_pid(p->nsproxy->pid_ns_for_children); - if (!pid) + if (IS_ERR(pid)) { + retval = PTR_ERR(pid); goto bad_fork_cleanup_io; + } } p->set_child_tid = (clone_flags & CLONE_CHILD_SETTID) ? child_tidptr : NULL; diff --git a/kernel/pid.c b/kernel/pid.c index cd36a5e0d173..4fd07d5b7baf 100644 --- a/kernel/pid.c +++ b/kernel/pid.c @@ -182,7 +182,7 @@ static int alloc_pidmap(struct pid_namespace *pid_ns) spin_unlock_irq(&pidmap_lock); kfree(page); if (unlikely(!map->page)) - break; + return -ENOMEM; } if (likely(atomic_read(&map->nr_free))) { for ( ; ; ) { @@ -210,7 +210,7 @@ static int alloc_pidmap(struct pid_namespace *pid_ns) } pid = mk_pid(pid_ns, map, offset); } - return -1; + return -EAGAIN; } int next_pidmap(struct pid_namespace *pid_ns, unsigned int last) @@ -301,17 +301,20 @@ struct pid *alloc_pid(struct pid_namespace *ns) int i, nr; struct pid_namespace *tmp; struct upid *upid; + int retval = -ENOMEM; pid = kmem_cache_alloc(ns->pid_cachep, GFP_KERNEL); if (!pid) - goto out; + return ERR_PTR(retval); tmp = ns; pid->level = ns->level; for (i = ns->level; i >= 0; i--) { nr = alloc_pidmap(tmp); - if (nr < 0) + if (IS_ERR_VALUE(nr)) { + retval = nr; goto out_free; + } pid->numbers[i].nr = nr; pid->numbers[i].ns = tmp; @@ -339,7 +342,6 @@ struct pid *alloc_pid(struct pid_namespace *ns) } spin_unlock_irq(&pidmap_lock); -out: return pid; out_unlock: @@ -351,8 +353,7 @@ out_free: free_pidmap(pid->numbers + i); kmem_cache_free(ns->pid_cachep, pid); - pid = NULL; - goto out; + return ERR_PTR(retval); } void disable_pid_allocation(struct pid_namespace *ns) |