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authorAl Viro <viro@zeniv.linux.org.uk>2011-12-08 23:20:45 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2011-12-09 00:40:19 -0500
commit905ad269c55fc62bee3da29f7b1d1efeba8aa1e1 (patch)
tree1c3cf1c0df2b72eca3f13f2f3d9057e754b7fb50 /fs/proc/root.c
parent09d9673d53005fdf40de4c759425893904292236 (diff)
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>
Diffstat (limited to 'fs/proc/root.c')
-rw-r--r--fs/proc/root.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/fs/proc/root.c b/fs/proc/root.c
index 9a8a2b77b874..03102d978180 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -91,20 +91,18 @@ static struct file_system_type proc_fs_type = {
91 91
92void __init proc_root_init(void) 92void __init proc_root_init(void)
93{ 93{
94 struct vfsmount *mnt;
95 int err; 94 int err;
96 95
97 proc_init_inodecache(); 96 proc_init_inodecache();
98 err = register_filesystem(&proc_fs_type); 97 err = register_filesystem(&proc_fs_type);
99 if (err) 98 if (err)
100 return; 99 return;
101 mnt = kern_mount_data(&proc_fs_type, &init_pid_ns); 100 err = pid_ns_prepare_proc(&init_pid_ns);
102 if (IS_ERR(mnt)) { 101 if (err) {
103 unregister_filesystem(&proc_fs_type); 102 unregister_filesystem(&proc_fs_type);
104 return; 103 return;
105 } 104 }
106 105
107 init_pid_ns.proc_mnt = mnt;
108 proc_symlink("mounts", NULL, "self/mounts"); 106 proc_symlink("mounts", NULL, "self/mounts");
109 107
110 proc_net_init(); 108 proc_net_init();
@@ -209,5 +207,5 @@ int pid_ns_prepare_proc(struct pid_namespace *ns)
209 207
210void pid_ns_release_proc(struct pid_namespace *ns) 208void pid_ns_release_proc(struct pid_namespace *ns)
211{ 209{
212 mntput(ns->proc_mnt); 210 kern_unmount(ns->proc_mnt);
213} 211}