procfs: fix a vfsmount longterm reference leak
kern_mount() doesn't pair with plain mntput()...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/proc/root.c b/fs/proc/root.c
index 9a8a2b7..03102d9 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -91,20 +91,18 @@
void __init proc_root_init(void)
{
- struct vfsmount *mnt;
int err;
proc_init_inodecache();
err = register_filesystem(&proc_fs_type);
if (err)
return;
- mnt = kern_mount_data(&proc_fs_type, &init_pid_ns);
- if (IS_ERR(mnt)) {
+ err = pid_ns_prepare_proc(&init_pid_ns);
+ if (err) {
unregister_filesystem(&proc_fs_type);
return;
}
- init_pid_ns.proc_mnt = mnt;
proc_symlink("mounts", NULL, "self/mounts");
proc_net_init();
@@ -209,5 +207,5 @@
void pid_ns_release_proc(struct pid_namespace *ns)
{
- mntput(ns->proc_mnt);
+ kern_unmount(ns->proc_mnt);
}