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authorAl Viro <viro@zeniv.linux.org.uk>2019-05-12 18:10:24 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2019-05-25 18:00:00 -0400
commit46cf047a945c7a53cb2dc9353a87a9a4e3e778cd (patch)
treef7dcda6f043952e36cbd62c9b57ed4d34cf8d5b5 /fs/proc
parent709a643da8b8c5fc823e1870d8227ca0eeb51311 (diff)
procfs: set ->user_ns before calling ->get_tree()
here it's even simpler than in mqueue - pid_ns_prepare_proc() does everything needed anyway. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/proc')
-rw-r--r--fs/proc/root.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/fs/proc/root.c b/fs/proc/root.c
index 8b145e7b9661..74c2c6ab10bd 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -157,8 +157,6 @@ static int proc_get_tree(struct fs_context *fc)
{
struct proc_fs_context *ctx = fc->fs_private;
- put_user_ns(fc->user_ns);
- fc->user_ns = get_user_ns(ctx->pid_ns->user_ns);
fc->s_fs_info = ctx->pid_ns;
return vfs_get_super(fc, vfs_get_keyed_super, proc_fill_super);
}
@@ -167,8 +165,7 @@ static void proc_fs_context_free(struct fs_context *fc)
{
struct proc_fs_context *ctx = fc->fs_private;
- if (ctx->pid_ns)
- put_pid_ns(ctx->pid_ns);
+ put_pid_ns(ctx->pid_ns);
kfree(ctx);
}
@@ -188,6 +185,8 @@ static int proc_init_fs_context(struct fs_context *fc)
return -ENOMEM;
ctx->pid_ns = get_pid_ns(task_active_pid_ns(current));
+ put_user_ns(fc->user_ns);
+ fc->user_ns = get_user_ns(ctx->pid_ns->user_ns);
fc->fs_private = ctx;
fc->ops = &proc_fs_context_ops;
return 0;