From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg1-f193.google.com ([209.85.215.193]:42770 "EHLO mail-pg1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727160AbeHPKan (ORCPT ); Thu, 16 Aug 2018 06:30:43 -0400 Received: by mail-pg1-f193.google.com with SMTP id y4-v6so1653068pgp.9 for ; Thu, 16 Aug 2018 00:34:10 -0700 (PDT) From: Andrei Vagin To: David Howells Cc: linux-fsdevel@vger.kernel.org, Andrei Vagin , Andrei Vagin Subject: [PATCH dhowells/mount-api] proc: set a proper user namespace for fs_context Date: Thu, 16 Aug 2018 00:34:07 -0700 Message-Id: <20180816073407.12567-1-avagin@openvz.org> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: A user namespace should be taken from a pidns for which a procfs is created. Signed-off-by: Andrei Vagin --- fs/proc/root.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/fs/proc/root.c b/fs/proc/root.c index 1d6e5bfa30cc..1419b48a89ab 100644 --- a/fs/proc/root.c +++ b/fs/proc/root.c @@ -315,6 +315,11 @@ int pid_ns_prepare_proc(struct pid_namespace *ns) if (IS_ERR(fc)) return PTR_ERR(fc); + if (fc->user_ns != ns->user_ns) { + put_user_ns(fc->user_ns); + fc->user_ns = get_user_ns(ns->user_ns); + } + ctx = fc->fs_private; if (ctx->pid_ns != ns) { put_pid_ns(ctx->pid_ns); -- 2.17.1