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, 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 2D452C433ED for ; Fri, 23 Apr 2021 20:39:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F16836144A for ; Fri, 23 Apr 2021 20:39:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243975AbhDWUjk (ORCPT ); Fri, 23 Apr 2021 16:39:40 -0400 Received: from mail-pg1-f178.google.com ([209.85.215.178]:38710 "EHLO mail-pg1-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243797AbhDWUji (ORCPT ); Fri, 23 Apr 2021 16:39:38 -0400 Received: by mail-pg1-f178.google.com with SMTP id w10so35981944pgh.5 for ; Fri, 23 Apr 2021 13:39:00 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:to:cc:from:subject:message-id:date:user-agent :mime-version:content-language:content-transfer-encoding; bh=CBw2oUkcioQg/YhgjnYpEN+gBNhmtSzKfowoLKnIaxI=; b=s1j5OgyOOsabd4m/t4tH5SjS7tukHl1osyny09s66ROaQ7DzVKTf/xLr+K1KxY/sDm +g7IG43YaiQHywFURTLjhFRAbHeJCub3ZK2+tC3pUXnbtJXHHHGVQSZx4ixBMwuopdXV GPj/eQ/jIp2fB0vMnRUKIuWUGDEkXYyKxl4axUqJUBa2usWqIPJdZVORD+CAyexBirac VicSOxkxfJqINd7tKTsdznmsWF1Drqr9zsiQBYYriM3KPw8NDRheis7ZGl3/CoYhd4c/ 1O2j0T1vtyr37MfKzHAaIGbIq254SHbEHeGdr7d9iBRfAyOZ5RUoz7qD9n5uEQ5kLnro hafA== X-Gm-Message-State: AOAM533uQmPy+/Yeqsfx4RAie34ct78OcozOfG8B4qAGH+r2X6H4byVd gRnjEdDAdEVRI+ENO2yLlShG9QDFe8o= X-Google-Smtp-Source: ABdhPJzDO55tNAo1mX27srErRmmEvYzWxXZIsASPiTDWv4GKxMqFdvUl9KCeEsmK8EOF/cr6qFPGKA== X-Received: by 2002:a63:aa48:: with SMTP id x8mr5524925pgo.246.1619210340068; Fri, 23 Apr 2021 13:39:00 -0700 (PDT) Received: from ?IPv6:2601:647:4000:d7:a976:f332:ee26:584f? ([2601:647:4000:d7:a976:f332:ee26:584f]) by smtp.gmail.com with ESMTPSA id j10sm5541781pfn.207.2021.04.23.13.38.57 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 23 Apr 2021 13:38:58 -0700 (PDT) To: Changheun Lee Cc: "linux-block@vger.kernel.org" From: Bart Van Assche Subject: New kernel warning triggered by blktests Message-ID: <45925919-ea46-1e38-2983-87b12c12003a@acm.org> Date: Fri, 23 Apr 2021 13:38:56 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.9.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Hi Changheun, If I run blktest srp/001 then a kernel warning appears that I haven't seen before. I think this is a side-effect of the patch that limits the bio size. Please take a look. Thanks, Bart. WARNING: CPU: 1 PID: 15449 at block/bio.c:1034 __bio_iov_iter_get_pages+0x324/0x350 Call Trace: bio_iov_iter_get_pages+0x6c/0x360 __blkdev_direct_IO_simple+0x291/0x580 blkdev_direct_IO+0xb5/0xc0 generic_file_direct_write+0x10d/0x290 __generic_file_write_iter+0x120/0x290 blkdev_write_iter+0x16e/0x280 new_sync_write+0x268/0x380 vfs_write+0x3e0/0x4f0 ksys_write+0xd9/0x180 __x64_sys_write+0x43/0x50 do_syscall_64+0x32/0x80 entry_SYSCALL_64_after_hwframe+0x44/0xae