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=-8.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 2549EC43457 for ; Sat, 10 Oct 2020 22:52:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CCC8F2076C for ; Sat, 10 Oct 2020 22:52:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387857AbgJJWwh (ORCPT ); Sat, 10 Oct 2020 18:52:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34654 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731259AbgJJTFU (ORCPT ); Sat, 10 Oct 2020 15:05:20 -0400 Received: from mail-pl1-x64f.google.com (mail-pl1-x64f.google.com [IPv6:2607:f8b0:4864:20::64f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 174F2C05BD3A for ; Sat, 10 Oct 2020 09:38:12 -0700 (PDT) Received: by mail-pl1-x64f.google.com with SMTP id h20so8483086plr.9 for ; Sat, 10 Oct 2020 09:38:12 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=j31NhuPOHM2geZWaaQJv3ikYyVsGXqVbWelRycz+tD0=; b=XN5sxKHVYxhjwnTvEvhl4CNobtqSLXE0Z9xY+r4U5NRBesrhOF9B88Tak2ApjTWTxr a78rN3/Hltrh+uL9O9dcVas2BEhm7OnR7KNf6uuEiTq2M6BeEAY/wDE629AWhvD8Xwmt oKEt3jshtcEwzT68TsXAP/mg9tXPLkTfDjlrmMJuqr1V6DU3xOvtDhB/OE5WoSnt8n5l /J6ncCjriEWqPObhm+FdsQDIWlMH2uSSknXeOyNSeLywzsPV15kIWvhByzQelmyXSwas jsN+U+pGrxQP098JwF40ia6B8CurfnbkUTGWoJMAA5yo8kNU5fv8lx6d6Loj/KA0epML vQpw== X-Gm-Message-State: AOAM531HENS2B9jnbupLoAy0D8daAo3nMTjByy1aK8dDeF6H7CyGE1mH VAjboTv0DfG1ec3WaVC+nDaZbsjxiK3o1VPXWTEhl4aStyEi X-Google-Smtp-Source: ABdhPJx0qf2gnVvR85VmXRDohn+cNhIC1jhkMLDhwNno11joOtr/W5u8fdFcI6aYLOLSV77D+vz4P6E2n6OED0dp3fa5TZJ1Lnm4 MIME-Version: 1.0 X-Received: by 2002:a92:874a:: with SMTP id d10mr13835218ilm.163.1602345365166; Sat, 10 Oct 2020 08:56:05 -0700 (PDT) Date: Sat, 10 Oct 2020 08:56:05 -0700 In-Reply-To: <0000000000004a624a05b05a756d@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000004c5e7e05b1531ab0@google.com> Subject: Re: INFO: task hung in nbd_ioctl (3) From: syzbot To: axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, mchristi@redhat.com, nbd@other.debian.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this issue to: commit e9e006f5fcf2bab59149cb38a48a4817c1b538b4 Author: Mike Christie Date: Sun Aug 4 19:10:06 2019 +0000 nbd: fix max number of supported devs bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=171556f0500000 start commit: fb0155a0 Merge tag 'nfs-for-5.9-3' of git://git.linux-nfs... git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=149556f0500000 console output: https://syzkaller.appspot.com/x/log.txt?x=109556f0500000 kernel config: https://syzkaller.appspot.com/x/.config?x=41b736b7ce1b3ea4 dashboard link: https://syzkaller.appspot.com/bug?extid=fe03c50d25c0188f7487 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=173d9b17900000 Reported-by: syzbot+fe03c50d25c0188f7487@syzkaller.appspotmail.com Fixes: e9e006f5fcf2 ("nbd: fix max number of supported devs") For information about bisection process see: https://goo.gl/tpsmEJ#bisection