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 373E8C433F5 for ; Tue, 22 Feb 2022 11:35:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231717AbiBVLfn (ORCPT ); Tue, 22 Feb 2022 06:35:43 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55988 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230138AbiBVLfm (ORCPT ); Tue, 22 Feb 2022 06:35:42 -0500 Received: from sender4-of-o53.zoho.com (sender4-of-o53.zoho.com [136.143.188.53]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9C1E8134DD6; Tue, 22 Feb 2022 03:35:16 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1645529707; cv=none; d=zohomail.com; s=zohoarc; b=fEKzDU/Q0F4Nbi0WEddMnznIQ/x78KwUd7Iv6DEQiAOk5Yvq47N4tQxTodcqtK6/uQIU39aemRUjQb02Sr9BlfQ4fVCy2afYkqhuCcvLx9ZRhLOvtcdJzku0NUXwk/rQFXinM52aDucspEisr1yZ8NwOM1oFF0GR29fLWb3VkEc= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1645529707; h=Content-Type:Cc:Date:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:To; bh=eNoJ9GB2trVuiIwO/BLfBx6vYt1aPBHxeGABKqFQJOw=; b=btamNQPR7JdQszRjlmu2KPwQ22C5/WTTy4AqP6hREy0VG2RG1fh1CaxUvefIoj7Oj4QSR6UsndxIVTZugm2IWAFOE1tm9M3qThl2e0LkXgXovmzMTZpAD4PGDCJuZt/CRFI3DELnjZJoFoA1DRl/RxT72dELDOOZpUH1qyMvY08= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=anirudhrb.com; spf=pass smtp.mailfrom=mail@anirudhrb.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1645529707; s=zoho; d=anirudhrb.com; i=mail@anirudhrb.com; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version:Content-Type:In-Reply-To; bh=eNoJ9GB2trVuiIwO/BLfBx6vYt1aPBHxeGABKqFQJOw=; b=tcmIPl/l32BxhmynD9ft66kRR2Z0CsZvazzodXNINc5w7RHCQAT6EltYeIen3eUS WIwgqap8QoQGR8kYlFk/+7f3jd0kdxShzrz+/iOGrbxTSN6mg+aaeeqp3z5wS//4eYN XstOPzEQPorBRUlTVvqqaowg/jXdvhcx75x0NbzI= Received: from anirudhrb.com (49.207.218.248 [49.207.218.248]) by mx.zohomail.com with SMTPS id 1645529703723645.9746206531503; Tue, 22 Feb 2022 03:35:03 -0800 (PST) Date: Tue, 22 Feb 2022 17:04:51 +0530 From: Anirudh Rayabharam To: Dan Carpenter Cc: Stefano Garzarella , syzbot , Jason Wang , kvm , kernel list , Michael Tsirkin , netdev , syzkaller-bugs@googlegroups.com, Linux Virtualization Subject: Re: [syzbot] INFO: task hung in vhost_work_dev_flush Message-ID: References: <00000000000057702a05d8532b18@google.com> <20220222100556.GM3965@kadam> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220222100556.GM3965@kadam> X-ZohoMailClient: External Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Tue, Feb 22, 2022 at 01:05:56PM +0300, Dan Carpenter wrote: > On Mon, Feb 21, 2022 at 09:23:04PM +0530, Anirudh Rayabharam wrote: > > On Mon, Feb 21, 2022 at 03:12:33PM +0100, Stefano Garzarella wrote: > > > #syz test: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/ > > > f71077a4d84b > > > > > > Patch sent upstream: > > > https://lore.kernel.org/virtualization/20220221114916.107045-1-sgarzare@redhat.com/T/#u > > > > I don't see how your patch fixes this issue. It looks unrelated. It is > > surprising that syzbot is happy with it. > > > > I have sent a patch for this issue here: > > https://lore.kernel.org/lkml/20220221072852.31820-1-mail@anirudhrb.com/ > > I wasted so much time trying to figure out what this patch fixes. :P Sorry! The new patch is here: https://lore.kernel.org/lkml/20220221195303.13560-1-mail@anirudhrb.com/T/#u Thanks! - Anirudh. > > (It doesn't fix anything). > > regards, > dan carpenter >