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=-1.2 required=3.0 tests=BAYES_05,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 531DDC433E0 for ; Thu, 21 Jan 2021 05:40:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E24F12389B for ; Thu, 21 Jan 2021 05:40:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727022AbhAUFkM (ORCPT ); Thu, 21 Jan 2021 00:40:12 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50792 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727685AbhAUFiM (ORCPT ); Thu, 21 Jan 2021 00:38:12 -0500 Received: from mail-yb1-xb2f.google.com (mail-yb1-xb2f.google.com [IPv6:2607:f8b0:4864:20::b2f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E3AA2C061575 for ; Wed, 20 Jan 2021 21:37:31 -0800 (PST) Received: by mail-yb1-xb2f.google.com with SMTP id z1so947170ybr.4 for ; Wed, 20 Jan 2021 21:37:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to:cc :content-transfer-encoding; bh=7zu8GUqZprm/GlryywXSearLwZoSZ1S/MZLkgUPCsQ4=; b=sRBBM2xhd97UbqcxnVW6yJlyVyg9lS1erTS769tAqdcoUAWJGY12Rum5Xqdi5S/Hi7 hjcFI3gDy9/1OBAMdXO3sECdk0eq44tRIOTEe9zpBnhImV6VY+htXFo83cXrBHqfTi3B X0xj0Y6eMvUMBz5W9H9MdLLehuFzzTzdKgi64Qs/nCGnsuB0fttclqlsSZXNm03/bJEd kfOy9F3174leF8KlBOPYuAFuoB5nvYy2Z2PQYcUQY5Ptv9Jr2sQVqyYmG5k4fiqf7syv hmlsZ1gk1J3z1LMQ4LkYe4Civxq+XOAnHbBGSzeHp12XDpmWHyIXoQgxFQmjcs//zzuJ D5Zg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to:cc :content-transfer-encoding; bh=7zu8GUqZprm/GlryywXSearLwZoSZ1S/MZLkgUPCsQ4=; b=qBwhVvmMiyQ3pTxbgpsNjheHC1GZ8j6Xyh/u75HcYE9mINlmzRmU7A8gU+mbdRowAI UdfMMecSvl/F6kHCwx7ix7KkS3unvfsT82fjBT02Ed/3veoagRCBgtO9JSIP8Akh8b4l 5mcXL/oh7d0Yqqx4kiOniEnt92RaWzE48mA7IvPew6hsMxPZF+E/cBQeBp67pyZqrxgP tLf6X5UCzpVb0CwGk7RnyhJgLWXHAhK0v+aTakV2hJrmNuGdHe1saMmvrii1KISuJV5j 0/N9vnSAVQDZNdiCNybZAnu76VdDGAWsDiVWqmznO61/nVhV2jRX3S+1weijlHyKV0W4 UomA== X-Gm-Message-State: AOAM531F1OU4Q9mnuFs0Eg1YBH2UD1UD0czCAZbkuJwkN5GnQRkIU4pu G46kvMZzJ2zMYw2K67hRZaH0VA1al1V6U+08LiQ= X-Google-Smtp-Source: ABdhPJy32zQ2r5eOLK5p91IMfeoLxKAMN2BiCh9Tz+JVsAlr98znTPJec7YbtpnZAchmZJEDFeJ/+gNq7Yk3mLL9wkg= X-Received: by 2002:a25:538a:: with SMTP id h132mr18132366ybb.247.1611207451064; Wed, 20 Jan 2021 21:37:31 -0800 (PST) MIME-Version: 1.0 From: =?UTF-8?B?5oWV5Yas5Lqu?= Date: Thu, 21 Jan 2021 13:37:05 +0800 Message-ID: Subject: "possible deadlock in console_lock_spinning_enable" and "possible deadlock in console_unlock" should be duplicate crash behaviors To: Greg KH , jirislaby@kernel.org, linux-kernel Cc: syzkaller-bugs , syzkaller Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Dear kernel developers, I found that on the syzbot dashboard, =E2=80=9Cpossible deadlock in console_lock_spinning_enable=E2=80=9D[1] and "possible deadlock in console_unlock"[2] should share the same root cause. The reasons for the above statement: 1) the stack trace is the same, and this title difference is due to the inline property of "console_lock_spinning_enable"; 2) their PoCs are the same as each other; If you can have any issues with this statement or our information is useful to you, please let us know. Thanks very much. [1] =E2=80=9Cpossible deadlock in console_lock_spinning_enable=E2=80=9D - https://syzkaller.appspot.com/bug?id=3D2820deb61d92a8d7ab17a56ced58e963e65d= 76d0 [2] =E2=80=9Cpossible deadlock in console_unlock=E2=80=9D - https://syzkaller.appspot.com/bug?id=3D39ea6caa479af471183997376dc7e90bc7d6= 4a6a -- My best regards to you. No System Is Safe! Dongliang Mu