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=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 6B8B2C4360C for ; Fri, 9 Apr 2021 10:15:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3637A61178 for ; Fri, 9 Apr 2021 10:15:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234623AbhDIKO7 (ORCPT ); Fri, 9 Apr 2021 06:14:59 -0400 Received: from mail.kernel.org ([198.145.29.99]:51678 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234253AbhDIKFY (ORCPT ); Fri, 9 Apr 2021 06:05:24 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 555D561354; Fri, 9 Apr 2021 10:01:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1617962506; bh=GDHvtSMoL1f+2k/HHA8kWHYrlGOFCjpXqcsVYxgGRhg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SzitXB5AB9EM4E7vefOS67k0LynqhmeQNN+5Zae5cazy7mrUko7wVjsOoiUbxb9yE c9v8z+CKn/mJpPLVSphsl+Am/5OgyM2ViE5zzrbIDbHJs10/9Abc9gFJFCF7Nvd+BI Qjvd8OnaO0MfHDMFMTWtao8UADAbdvez6pBtxqEk= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Vincent Whitchurch , Tom Talpey , "Paulo Alcantara (SUSE)" , Steve French , Sasha Levin Subject: [PATCH 5.11 34/45] cifs: Silently ignore unknown oplock break handle Date: Fri, 9 Apr 2021 11:54:00 +0200 Message-Id: <20210409095306.526169690@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210409095305.397149021@linuxfoundation.org> References: <20210409095305.397149021@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 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 d9073b569e17..53fb751bf210 100644 --- a/fs/cifs/smb2misc.c +++ b/fs/cifs/smb2misc.c @@ -754,8 +754,8 @@ 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 -- 2.30.2