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=-5.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 8BBC3C433EF for ; Wed, 15 Sep 2021 04:54:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 55A7A60F23 for ; Wed, 15 Sep 2021 04:54:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230144AbhIOEzt (ORCPT ); Wed, 15 Sep 2021 00:55:49 -0400 Received: from mail-pg1-f179.google.com ([209.85.215.179]:41557 "EHLO mail-pg1-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229450AbhIOEzs (ORCPT ); Wed, 15 Sep 2021 00:55:48 -0400 Received: by mail-pg1-f179.google.com with SMTP id k24so1500489pgh.8 for ; Tue, 14 Sep 2021 21:54:30 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:from :subject:to:content-language:content-transfer-encoding; bh=kMujyTPHEBUEWVZSdwuQSBkcVxeQpQWQ75e+LUpOENM=; b=OcUrf67i2syTg7ED4jIXGcs+YGDFgEUsRr82FXiTuE66mU4mCBtmRwlfgqXHBEVP8o F570L1z4GR6D5citqUVcJK8payheQP2tDGrKRsrf6UxL1ywC5pmeexpYbN/065fJJcZM 9+Qy2ZI1I6qpgFoG5Nkjq3NCfWR1dV/s5iuP252dGkYlSPoCbdZ820VoA5IIY0f1dX0Z lpZ62uFBzNnqhQakn83RYjVEVcGqoH9BLeOBLUbEtuJ+uPsqJsDQjOBAIvY8DSfs4TH7 5h0SIlf0pNHX4LNq6P7JGssMHnZRDkP6tFN+TCiT4YPAMnzVIQUEU6grGAuQHZ4HcDyY 5SuA== X-Gm-Message-State: AOAM533vsPwmpcOQkxO0uIVy6icwcba5pv7a1XIdZ3IoKl+9LVvF2pR6 QOzOa8Dc6cvXt0QDXWiuh8JeajeyRio= X-Google-Smtp-Source: ABdhPJzLonDbby1C2J66Fy57PQp3XDxzk1bvNqjiEPHdVfw6vKKyejiPasoQU3Q4lxLDwEX++jay8g== X-Received: by 2002:a63:b204:: with SMTP id x4mr18196520pge.212.1631681669677; Tue, 14 Sep 2021 21:54:29 -0700 (PDT) Received: from ?IPV6:2601:647:4000:d7:823b:e2f5:7a33:44c7? ([2601:647:4000:d7:823b:e2f5:7a33:44c7]) by smtp.gmail.com with ESMTPSA id i10sm12225714pfk.87.2021.09.14.21.54.28 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 14 Sep 2021 21:54:29 -0700 (PDT) Message-ID: Date: Tue, 14 Sep 2021 21:54:27 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.0.3 From: Bart Van Assche Subject: v5.15-rc1 issue with the soft-iWARP driver To: linux-rdma@vger.kernel.org, Jason Gunthorpe Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org Hi, If I run test srp/015 from the blktests suite then the following appears in the kernel log: ================================================================== BUG: KASAN: null-ptr-deref in __list_del_entry_valid+0x4d/0xe0 Read of size 8 at addr 0000000000000000 by task kworker/u16:3/161 CPU: 5 PID: 161 Comm: kworker/u16:3 Not tainted 5.15.0-rc1-dbg+ #2 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a-rebuilt.opensuse.org 04/01/2014 Workqueue: iw_cm_wq cm_work_handler [iw_cm] Call Trace: show_stack+0x52/0x58 dump_stack_lvl+0x5b/0x82 kasan_report.cold+0x52/0x57 __asan_load8+0x69/0x90 __list_del_entry_valid+0x4d/0xe0 _cma_cancel_listens+0x49/0x230 [rdma_cm] _destroy_id+0x4e/0x420 [rdma_cm] destroy_id_handler_unlock+0xc4/0x200 [rdma_cm] iw_conn_req_handler+0x335/0x370 [rdma_cm] cm_conn_req_handler+0x546/0x7d0 [iw_cm] cm_work_handler+0x419/0x480 [iw_cm] process_one_work+0x59d/0xb00 worker_thread+0x8f/0x5c0 kthread+0x1fc/0x230 ret_from_fork+0x1f/0x30 ================================================================== I think this is a regression. This happened with commit a17a1faf5d3e ("RDMA/cma: Fix listener leak in rdma_cma_listen_on_all() failure"). Thanks, Bart.