From patchwork Thu Dec 1 06:58:00 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiubo Li X-Patchwork-Id: 13060996 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7CCB4C43217 for ; Thu, 1 Dec 2022 06:59:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229848AbiLAG7F (ORCPT ); Thu, 1 Dec 2022 01:59:05 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53446 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229449AbiLAG7D (ORCPT ); Thu, 1 Dec 2022 01:59:03 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C3C913FBB4 for ; Wed, 30 Nov 2022 22:58:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1669877888; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=vQSeo5WRJUG0Y0WkiQ/AFBMQlfNS5mfy/wwYdfC0c2o=; b=VIF8mjau7RhJY0Q9SodIZkG7BY7SvgiRPkSzgKBeeKRqodZhS601gZKfazzjFCizcRR6SS uMYfxqdgT96+wkHvX9MzdFboSCdVBwX4CIcpzq+fvdnejqkQWn+kwz1D7+0XVjN7ufezsC ssVdEvnINsydUZzH8GR8JE7BnX+hrAU= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-435-tk6vhfkeNtqGRPrDHrX08w-1; Thu, 01 Dec 2022 01:58:06 -0500 X-MC-Unique: tk6vhfkeNtqGRPrDHrX08w-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 2F2E13C01D90; Thu, 1 Dec 2022 06:58:06 +0000 (UTC) Received: from lxbceph1.gsslab.pek2.redhat.com (unknown [10.72.47.117]) by smtp.corp.redhat.com (Postfix) with ESMTP id 96F412028CE4; Thu, 1 Dec 2022 06:58:03 +0000 (UTC) From: xiubli@redhat.com To: idryomov@gmail.com, ceph-devel@vger.kernel.org Cc: jlayton@kernel.org, khiremat@redhat.com, linux-fscrypt@vger.kernel.org, Xiubo Li Subject: [PATCH] ceph: make sure all the files successfully put before unmounting Date: Thu, 1 Dec 2022 14:58:00 +0800 Message-Id: <20221201065800.18149-1-xiubli@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.4 Precedence: bulk List-ID: X-Mailing-List: linux-fscrypt@vger.kernel.org From: Xiubo Li When close a file it will be deferred to call the fput(), which will hold the inode's i_count. And when unmounting the mountpoint the evict_inodes() may skip evicting some inodes. If encrypt is enabled the kernel generate a warning when removing the encrypt keys when the skipped inodes still hold the keyring: WARNING: CPU: 4 PID: 168846 at fs/crypto/keyring.c:242 fscrypt_destroy_keyring+0x7e/0xd0 CPU: 4 PID: 168846 Comm: umount Tainted: G S 6.1.0-rc5-ceph-g72ead199864c #1 Hardware name: Supermicro SYS-5018R-WR/X10SRW-F, BIOS 2.0 12/17/2015 RIP: 0010:fscrypt_destroy_keyring+0x7e/0xd0 RSP: 0018:ffffc9000b277e28 EFLAGS: 00010202 RAX: 0000000000000002 RBX: ffff88810d52ac00 RCX: ffff88810b56aa00 RDX: 0000000080000000 RSI: ffffffff822f3a09 RDI: ffff888108f59000 RBP: ffff8881d394fb88 R08: 0000000000000028 R09: 0000000000000000 R10: 0000000000000001 R11: 11ff4fe6834fcd91 R12: ffff8881d394fc40 R13: ffff888108f59000 R14: ffff8881d394f800 R15: 0000000000000000 FS: 00007fd83f6f1080(0000) GS:ffff88885fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f918d417000 CR3: 000000017f89a005 CR4: 00000000003706e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: generic_shutdown_super+0x47/0x120 kill_anon_super+0x14/0x30 ceph_kill_sb+0x36/0x90 [ceph] deactivate_locked_super+0x29/0x60 cleanup_mnt+0xb8/0x140 task_work_run+0x67/0xb0 exit_to_user_mode_prepare+0x23d/0x240 syscall_exit_to_user_mode+0x25/0x60 do_syscall_64+0x40/0x80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fd83dc39e9b URL: https://tracker.ceph.com/issues/58126 Signed-off-by: Xiubo Li --- fs/ceph/super.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/fs/ceph/super.c b/fs/ceph/super.c index 3db6f95768a3..1f46db92e81f 100644 --- a/fs/ceph/super.c +++ b/fs/ceph/super.c @@ -9,6 +9,7 @@ #include #include #include +#include #include #include #include @@ -1477,6 +1478,14 @@ static void ceph_kill_sb(struct super_block *s) ceph_mdsc_pre_umount(fsc->mdsc); flush_fs_workqueues(fsc); + /* + * If the encrypt is enabled we need to make sure the delayed + * fput to finish, which will make sure all the inodes will + * be evicted before removing the encrypt keys. + */ + if (s->s_master_keys) + flush_delayed_fput(); + kill_anon_super(s); fsc->client->extra_mon_dispatch = NULL;