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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 649ECC433EF for ; Mon, 7 Feb 2022 21:15:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234868AbiBGVPX (ORCPT ); Mon, 7 Feb 2022 16:15:23 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42494 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231300AbiBGVPW (ORCPT ); Mon, 7 Feb 2022 16:15:22 -0500 Received: from mail-io1-f71.google.com (mail-io1-f71.google.com [209.85.166.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 54CB5C06173B for ; Mon, 7 Feb 2022 13:15:21 -0800 (PST) Received: by mail-io1-f71.google.com with SMTP id q7-20020a6bf207000000b006129589cb60so10059113ioh.4 for ; Mon, 07 Feb 2022 13:15:21 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=Q04Lfm5jkwz+yscbqKxM+OCLcVdT1wPW/kSPJYuzo3E=; b=1fBCCYZ/4zGMo6+3lKwN1tNAFflDtbJMUF8rEYM9YJkswbAHt7E0DNQ7ssTAVO17UF aFH0jT4mjP9rXe91dx5V61aLmT6vnt9rNXqspuxKqG8qh5Qqnv8cBguSH6Kf6VXAlp0R nDOIwHmxOaW6hftB/gb4qxYDMyrYw2ERX52gFQ1pMfPvKuhFihU263Xsw10yLV+Bh4K2 iAMETF81NC2zpvhJu2DDfcrGyE+Hy7M439prUd2j0GRaxnmkYHaQWC6W+IefASrAlcc9 Y9lGTh/KYcRlLyckGEFrn5sIKF8mc8wm9DPjxhTjgV4GNXNaxNxjBWenirWuwTx0GLEd nsww== X-Gm-Message-State: AOAM532uRo1lzD1uzIzUY8RoLsDMkiX4gS9woi8Wtg6bLIQSeNo/ijYM ky4X6hsyUkJ5D6spXvjTxXNtKTOjS3n8W6X7+r+ndXOrw4bu X-Google-Smtp-Source: ABdhPJwcG15q2cwpMieUm4wQkcyVruS93jcXOM1DtU0+s6L3dCWSrW34PO8FXy8+s+zH5D8xY01EufTIQrFlfl/1KHKVDUm0qCkL MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1e08:: with SMTP id g8mr757607ila.22.1644268520680; Mon, 07 Feb 2022 13:15:20 -0800 (PST) Date: Mon, 07 Feb 2022 13:15:20 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000001733e105d77419fe@google.com> Subject: [syzbot] WARNING in schedule_bh (2) From: syzbot To: axboe@kernel.dk, efremov@linux.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.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 found a reproducer for the following issue on: HEAD commit: dfd42facf1e4 Linux 5.17-rc3 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=145b5a28700000 kernel config: https://syzkaller.appspot.com/x/.config?x=266de9da75c71a45 dashboard link: https://syzkaller.appspot.com/bug?extid=e89a1109c376e2c3c389 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: i386 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15572b0c700000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1220d968700000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e89a1109c376e2c3c389@syzkaller.appspotmail.com floppy1: floppy timeout called ------------[ cut here ]------------ WARNING: CPU: 0 PID: 11 at drivers/block/floppy.c:1000 schedule_bh+0x5f/0x70 drivers/block/floppy.c:1000 Modules linked in: CPU: 0 PID: 11 Comm: kworker/u16:1 Not tainted 5.17.0-rc3-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 Workqueue: floppy floppy_shutdown RIP: 0010:schedule_bh+0x5f/0x70 drivers/block/floppy.c:1000 Code: d7 65 fd fc 48 89 2d 20 c8 03 0c 5b 48 c7 c2 80 d0 6a 8c 48 8b 35 f1 cc 03 0c bf 08 00 00 00 5d e9 46 9a d1 fc e8 b1 65 fd fc <0f> 0b eb d1 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 e8 9b 65 fd fc RSP: 0018:ffffc900003cfcf8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: ffff888010feba00 RSI: ffffffff847b12df RDI: 0000000000000003 RBP: ffffffff847bc790 R08: 0000000000000000 R09: ffffffff8c6ad087 R10: ffffffff847b12af R11: 0000000000000000 R12: 0000000000000001 R13: ffffc900003cfdb8 R14: ffff888010db3e00 R15: ffff888010c71800 FS: 0000000000000000(0000) GS:ffff88802cb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000f7ea1db0 CR3: 000000001f15c000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: floppy_shutdown+0x129/0x170 drivers/block/floppy.c:1890 process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307 worker_thread+0x657/0x1110 kernel/workqueue.c:2454 kthread+0x2e9/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295