Prev: [PATCH 1/2] pid_ns: move destroy_pid_namespace() into workqueue context
Next: pid: Remove the child_reaper special case in init/main.c
From: Oleg Nesterov on 20 Jun 2010 14:30
On 06/20, Eric W. Biederman wrote:
>
> Reorganize proc_get_sb so it can be called before the struct pid
> of the first process is allocated.

This is what

[PATCH 1/4] procfs: proc_get_sb: consolidate/cleanup root_inode->pid logic
[PATCH 2/4] procfs: kill the global proc_mnt variable

do. But,

> @@ -96,6 +97,9 @@ static struct pid_namespace *create_pid_namespace(struct pid_namespace *parent_p
> for (i = 1; i < PIDMAP_ENTRIES; i++)
> atomic_set(&ns->pidmap[i].nr_free, BITS_PER_PAGE);
>
> + if (pid_ns_prepare_proc(ns))
> + goto out_free_map;
> +
> return ns;

Afaics, this is wrong.

If pid_ns_prepare_proc() fails we shouldn't blindly return ENOMEM
and, more importantly, we need put_pid_ns(parent_ns).

Oleg.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo(a)vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
 | 
Pages: 1
Prev: [PATCH 1/2] pid_ns: move destroy_pid_namespace() into workqueue context
Next: pid: Remove the child_reaper special case in init/main.c