From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6F013C433E5 for ; Mon, 29 Mar 2021 22:33:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 46225617C9 for ; Mon, 29 Mar 2021 22:33:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233444AbhC2Wc1 (ORCPT ); Mon, 29 Mar 2021 18:32:27 -0400 Received: from mail.kernel.org ([198.145.29.99]:47708 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232807AbhC2W2K (ORCPT ); Mon, 29 Mar 2021 18:28:10 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id BD802619F9; Mon, 29 Mar 2021 22:24:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1617056664; bh=RnebrUB8+GyygebJkg/+vnrtH37n7d/wSFL/I/9wgDc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mGsIftvafscmiJtuVZhBTP0CMw+Qfq+PiGDybHURAuAMR45CNFki1nUI48DI589jP B/GDVqJkmxSW49AOWfGzy+too4SaVXqZ2M4ImYao7kmaTN1scynW+HId2tLZHq9Hwz /8Jhkdl3GLUaLpYSGsYtWbDY5w7es/rprERqCYDNKd2srLpnvBUsB78RuBlrQ7lVaC b0RU+3kIAkWQL1nrPjnTV/aTbzrAPJ0RpxKCjxtZBn7T8ZTnLHJNCsq8FU39xGU3X0 Kt37YiVE14wjTO7G5oWt+bVSuPrP12tKhymtdU/Kpp610uE7pJ8SjoxcpSHpQtit0s 8DAqOGqRO9TOg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Vincent Whitchurch , Tom Talpey , Paulo Alcantara , Steve French , Sasha Levin , linux-cifs@vger.kernel.org, samba-technical@lists.samba.org Subject: [PATCH AUTOSEL 4.4 8/8] cifs: Silently ignore unknown oplock break handle Date: Mon, 29 Mar 2021 18:24:14 -0400 Message-Id: <20210329222415.2384075-8-sashal@kernel.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210329222415.2384075-1-sashal@kernel.org> References: <20210329222415.2384075-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Vincent Whitchurch [ Upstream commit 219481a8f90ec3a5eed9638fb35609e4b1aeece7 ] Make SMB2 not print out an error when an oplock break is received for an unknown handle, similar to SMB1. The debug message which is printed for these unknown handles may also be misleading, so fix that too. The SMB2 lease break path is not affected by this patch. Without this, a program which writes to a file from one thread, and opens, reads, and writes the same file from another thread triggers the below errors several times a minute when run against a Samba server configured with "smb2 leases = no". CIFS: VFS: \\192.168.0.1 No task to wake, unknown frame received! NumMids 2 00000000: 424d53fe 00000040 00000000 00000012 .SMB@........... 00000010: 00000001 00000000 ffffffff ffffffff ................ 00000020: 00000000 00000000 00000000 00000000 ................ 00000030: 00000000 00000000 00000000 00000000 ................ Signed-off-by: Vincent Whitchurch Reviewed-by: Tom Talpey Reviewed-by: Paulo Alcantara (SUSE) Signed-off-by: Steve French Signed-off-by: Sasha Levin --- fs/cifs/smb2misc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/cifs/smb2misc.c b/fs/cifs/smb2misc.c index 44198b9a5315..19baeb4ca511 100644 --- a/fs/cifs/smb2misc.c +++ b/fs/cifs/smb2misc.c @@ -633,8 +633,8 @@ smb2_is_valid_oplock_break(char *buffer, struct TCP_Server_Info *server) } } spin_unlock(&cifs_tcp_ses_lock); - cifs_dbg(FYI, "Can not process oplock break for non-existent connection\n"); - return false; + cifs_dbg(FYI, "No file id matched, oplock break ignored\n"); + return true; } void -- 2.30.1