Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:50214 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1423321AbeCBIxt (ORCPT ); Fri, 2 Mar 2018 03:53:49 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Al Viro , Sasha Levin Subject: [PATCH 3.18 05/24] sget(): handle failures of register_shrinker() Date: Fri, 2 Mar 2018 09:51:02 +0100 Message-Id: <20180302084239.446610429@linuxfoundation.org> In-Reply-To: <20180302084239.157503766@linuxfoundation.org> References: <20180302084239.157503766@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 3.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Al Viro [ Upstream commit 9ee332d99e4d5a97548943b81c54668450ce641b ] Signed-off-by: Al Viro Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- fs/super.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) --- a/fs/super.c +++ b/fs/super.c @@ -476,7 +476,11 @@ retry: hlist_add_head(&s->s_instances, &type->fs_supers); spin_unlock(&sb_lock); get_filesystem(type); - register_shrinker(&s->s_shrink); + err = register_shrinker(&s->s_shrink); + if (err) { + deactivate_locked_super(s); + s = ERR_PTR(err); + } return s; }