diff options
author | Al Viro <viro@zeniv.linux.org.uk> | 2011-12-08 23:20:45 -0500 |
---|---|---|
committer | Al Viro <viro@zeniv.linux.org.uk> | 2011-12-09 00:40:19 -0500 |
commit | 905ad269c55fc62bee3da29f7b1d1efeba8aa1e1 (patch) | |
tree | 1c3cf1c0df2b72eca3f13f2f3d9057e754b7fb50 /fs/proc/root.c | |
parent | 09d9673d53005fdf40de4c759425893904292236 (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.c | 8 |
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 | ||
92 | void __init proc_root_init(void) | 92 | void __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 | ||
210 | void pid_ns_release_proc(struct pid_namespace *ns) | 208 | void pid_ns_release_proc(struct pid_namespace *ns) |
211 | { | 209 | { |
212 | mntput(ns->proc_mnt); | 210 | kern_unmount(ns->proc_mnt); |
213 | } | 211 | } |