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 9DC31C433EF for ; Mon, 21 Feb 2022 04:18:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343729AbiBUESc (ORCPT ); Sun, 20 Feb 2022 23:18:32 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:56928 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231460AbiBUESb (ORCPT ); Sun, 20 Feb 2022 23:18:31 -0500 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9A3F5B02 for ; Sun, 20 Feb 2022 20:18:08 -0800 (PST) Received: by mail-il1-f200.google.com with SMTP id m17-20020a923f11000000b002c10e8f4c44so7387823ila.1 for ; Sun, 20 Feb 2022 20:18:08 -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:in-reply-to:message-id:subject :from:to; bh=IHT/U9u+x6V9dKYrCwR3IrnVQ9f5VJ80bCFYXvfAQZg=; b=QpDGlU2BGqheL7SGpAoQybIsOXS4QwrI2jL/2g2OO8p5P5HLl5wPQJ4lHDypLnIDS2 Mqtiheo/ka5aS7IY2+oUIv/OT7LPjRcvGf3yoLth0gRMi2e2rfO00AeCXt8p8XbRNvUa maUsunREWWoet8nTRqa1nP6TgZHrtQpdmYQZplnil9PXi6ry0PqjkDOOHaefRIhwkxxx oLC0i/teCHHQhMW7K+pAuntKsDD/spuXxSaLCpyfcw3zxUzOjSaHiYb0pn8+YJI1dFim vq7G4NbFXotHHjFNguFjVx9gdBjEQFh4n7JfE4FxupZFbQyZmnu7NDkIz8HkMVyCL7mO zoMg== X-Gm-Message-State: AOAM531gEPkEBlfsApncBjVA4p+EHWl7i+QZx5QGB5zkSl2pvaS6aUBH Q+9W6geLA/xDavjLQKyDjJRQ8y3M43Ln7ey/WzCyr5y6FfLH X-Google-Smtp-Source: ABdhPJy++bYypQ+Ze3dqyfyCvspYIJuHBEyZhA2P2qk1x/Vu5H1k3OAuZsGScZJIfDgrMu1gQbIf2/a6EZGkOthcEuFTHulFATqT MIME-Version: 1.0 X-Received: by 2002:a92:d242:0:b0:2b9:a33b:9068 with SMTP id v2-20020a92d242000000b002b9a33b9068mr15115043ilg.144.1645417088021; Sun, 20 Feb 2022 20:18:08 -0800 (PST) Date: Sun, 20 Feb 2022 20:18:08 -0800 In-Reply-To: <20220221040745.1177-1-hdanton@sina.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000009fc5b05d87f85d7@google.com> Subject: Re: [syzbot] kernel BUG in vhost_get_vq_desc From: syzbot To: hdanton@sina.com, jasowang@redhat.com, linux-kernel@vger.kernel.org, mst@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: WARNING in vhost_dev_cleanup ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4069 at drivers/vhost/vhost.c:715 vhost_dev_cleanup+0x8b8/0xbc0 drivers/vhost/vhost.c:715 Modules linked in: CPU: 0 PID: 4069 Comm: syz-executor422 Not tainted 5.17.0-rc4-syzkaller-00054-gf71077a4d84b-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:vhost_dev_cleanup+0x8b8/0xbc0 drivers/vhost/vhost.c:715 Code: c7 85 90 01 00 00 00 00 00 00 e8 a3 6d a2 fa 48 89 ef 48 83 c4 20 5b 5d 41 5c 41 5d 41 5e 41 5f e9 7d d6 ff ff e8 88 6d a2 fa <0f> 0b e9 46 ff ff ff 48 8b 7c 24 10 e8 d7 ff e9 fa e9 75 f7 ff ff RSP: 0018:ffffc9000280fca8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: ffff88801cadd700 RSI: ffffffff86d67098 RDI: ffff88807b1d00b0 RBP: ffff88807b1d0000 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff817f1e08 R11: 0000000000000000 R12: ffff88807b1d00d0 R13: ffff88807b1d0120 R14: ffff88807b1d00d0 R15: 0000000000000002 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000561d17c43600 CR3: 0000000073741000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vhost_vsock_dev_release+0x3a4/0x4f0 drivers/vhost/vsock.c:778 __fput+0x286/0x9f0 fs/file_table.c:313 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 exit_task_work include/linux/task_work.h:32 [inline] do_exit+0xb29/0x2a30 kernel/exit.c:806 do_group_exit+0xd2/0x2f0 kernel/exit.c:935 __do_sys_exit_group kernel/exit.c:946 [inline] __se_sys_exit_group kernel/exit.c:944 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:944 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f43a65e8ba9 Code: Unable to access opcode bytes at RIP 0x7f43a65e8b7f. RSP: 002b:00007ffdf78cba98 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f43a665d330 RCX: 00007f43a65e8ba9 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 00007ffdf78cbc88 R10: 00007ffdf78cbc88 R11: 0000000000000246 R12: 00007f43a665d330 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 Tested on: commit: f71077a4 Merge tag 'mmc-v5.17-rc1-2' of git://git.kern.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/ console output: https://syzkaller.appspot.com/x/log.txt?x=16da8df2700000 kernel config: https://syzkaller.appspot.com/x/.config?x=a78b064590b9f912 dashboard link: https://syzkaller.appspot.com/bug?extid=3140b17cb44a7b174008 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 patch: https://syzkaller.appspot.com/x/patch.diff?x=1682e422700000