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 8DC03C433F5 for ; Tue, 4 Jan 2022 18:18:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236198AbiADSS2 (ORCPT ); Tue, 4 Jan 2022 13:18:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51486 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229504AbiADSS0 (ORCPT ); Tue, 4 Jan 2022 13:18:26 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7BBAAC061761 for ; Tue, 4 Jan 2022 10:18:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=DAujSD94+bcpvVfOH5dd0ERdar8XqXZUWBgG9F0szd8=; b=lQPAmUlZETyrTfueH6E6Tf4/Sm Gkt4M3OY0aH7F0dC22T5VC3xCcgIY/DD2ohmddm22Ctf9zEvdyFHQA74BxeOHlc5gh4eK9i3TlvKi th5njhTch4HHwzqHwkxReEJ9emm7r2QBntc1YpKz7hKzA1OGp57aQZl9/C/2946cwMXjaG6WkATAg 9vVV+3OJhlW+EtYNuIwsZY6DjcP+fL1s3bvzqaJpGpdgrjojVikKFMK6iF9WwdyJ5rHGs5m9rrs/j JQ59u60EePfOptkYe4V3b/BNu02AzqNiOhxEl4OByoTtO2QzvhflrBc1hmeJRbsxOIppnBA8teMOz tC9sky3Q==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1n4oO7-00DtIS-9w; Tue, 04 Jan 2022 18:18:23 +0000 Date: Tue, 4 Jan 2022 18:18:23 +0000 From: Matthew Wilcox To: kvartet Cc: Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, sunhao.th@gmail.com Subject: Re: INFO: task hung in __filemap_get_folio Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jan 04, 2022 at 07:44:10PM +0800, kvartet wrote: > Hello, > > When using Syzkaller to fuzz the latest Linux kernel, the following > crash was triggered. This isn't a crash, it's a notification of a hang. More than likely syzbot is playing with RT scheduling again. We do not need more people running syzbot. We need more people tracking down and fixing the syzbot reports that already exist.