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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 CC0CDC3A5A2 for ; Fri, 23 Aug 2019 23:41:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A126C2173E for ; Fri, 23 Aug 2019 23:41:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725782AbfHWXlk (ORCPT ); Fri, 23 Aug 2019 19:41:40 -0400 Received: from mail-pl1-f180.google.com ([209.85.214.180]:40465 "EHLO mail-pl1-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725283AbfHWXlk (ORCPT ); Fri, 23 Aug 2019 19:41:40 -0400 Received: by mail-pl1-f180.google.com with SMTP id h3so6432847pls.7 for ; Fri, 23 Aug 2019 16:41:39 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=KFA3JD8/xRJ4eOK2EI8Rzz9iVovpG18oSiXIKRj77Ss=; b=kWzcpXzfZgcvFUUUmgQvb7ABHHnXvhWsxI4YBWzUqlL8jk2rTZrOgoUpr3aVr8h7ra 3OCbGAhIQKMTWbjF5QG3fG+2Yqh1a7BXqqA+zl8AAWZ2WKirW9z4ZVyf9BoP1YuYJuiv kJENTYRneeKAs7XTjQAvIjDFUhjXUV282n+0i9OxNLJyxKqpjs2uFLL0D6OG7GQxQ/p/ YV4f6uir1ZMQRIr04jysEZ+03OTCI7s2q+sfTtYbIgAN8zqLyGwTAsFApGLKJbtt35to XFYraJQxxR+qp+EvAcQUYKtSc43HOiDdZut9/1DYKJ6wHD3W+nDKlmh6C/hSpF3V79xh yV8Q== X-Gm-Message-State: APjAAAWKu1CgK5gesJCBzOdHUVHqP0sosG5pfLJ6ha9CJL8A43bdbBFy uHesaLC20M1ODTI9xK/MeDWRRVYK X-Google-Smtp-Source: APXvYqy7+WmqC246N7GQcy1n8kIKk03fJ42OhdaD88/YuSgMlj37OskAhJMyfje/88Y3ZWTqefAUAA== X-Received: by 2002:a17:902:223:: with SMTP id 32mr7684382plc.220.1566603698866; Fri, 23 Aug 2019 16:41:38 -0700 (PDT) Received: from asus.site ([2601:647:4000:1349:56c2:95e9:3c7:9c11]) by smtp.gmail.com with ESMTPSA id 16sm6508609pfc.66.2019.08.23.16.41.37 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 23 Aug 2019 16:41:38 -0700 (PDT) Subject: Re: siw trigger BUG: sleeping function called from invalid context at mm/slab.h:50 To: Bernard Metzler , linux-rdma@vger.kernel.org References: <6ed77231-800b-f629-5d15-14409f0777c7@acm.org> From: Bart Van Assche Message-ID: <03dfc9ef-c854-4821-7eaa-9f862bcc6d70@acm.org> Date: Fri, 23 Aug 2019 16:41:37 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <6ed77231-800b-f629-5d15-14409f0777c7@acm.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org On 8/23/19 4:02 PM, Bart Van Assche wrote: > If I try to associate the ib_srpt driver with the siw driver the > complaint shown below appears on the console. According to gdb: (gdb) list *(siw_create_listen+0x2f5) 0x6195 is in siw_create_listen (drivers/infiniband/sw/siw /siw_cm.c:2011). 2006 bind_addr.sin6_port = s_laddr->sin6_port; 2007 bind_addr.sin6_flowinfo = 0; 2008 bind_addr.sin6_addr = ifp->addr; 2009 bind_addr.sin6_scope_id = dev->ifindex; 2010 2011 rv = siw_listen_address(id, backlog, 2012 (struct sockaddr *)&bind_addr, 2013 AF_INET6); 2014 if (!rv) 2015 listeners++; This is the code that causes trouble: read_lock_bh(&in6_dev->lock); list_for_each_entry(ifp, &in6_dev->addr_list, if_list) { struct sockaddr_in6 bind_addr; if (ipv6_addr_any(&s_laddr->sin6_addr) || ipv6_addr_equal(&s_laddr->sin6_addr, &ifp->addr)) { bind_addr.sin6_family = AF_INET6; bind_addr.sin6_port = s_laddr->sin6_port; bind_addr.sin6_flowinfo = 0; bind_addr.sin6_addr = ifp->addr; bind_addr.sin6_scope_id = dev->ifindex; rv = siw_listen_address(id, backlog, (struct sockaddr *)&bind_addr, AF_INET6); if (!rv) listeners++; } } read_unlock_bh(&in6_dev->lock); siw_listen_address() calls sock_create(). I don't think it is allowed to call sock_create() from atomic context. Thanks, Bart.