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 9FB92C636D4 for ; Sun, 12 Feb 2023 17:35:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229647AbjBLRd1 (ORCPT ); Sun, 12 Feb 2023 12:33:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39168 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229468AbjBLRd0 (ORCPT ); Sun, 12 Feb 2023 12:33:26 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 85D8F46B9 for ; Sun, 12 Feb 2023 09:33:25 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 2400860DC0 for ; Sun, 12 Feb 2023 17:33:25 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 005ABC433D2; Sun, 12 Feb 2023 17:33:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1676223204; bh=RoVeouo2WSoPCdbG1BYhN5N2qKoHVh22DZo/2vMJ+TM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=raIyiPkACHgloJOuggQXxTyAVZIoyXx8oEnn0teQ0SmH3U5I5vVUEIPQEeF3gL+Fz t5CCCAePJtEPjftls+7MzGlroQjQBZjlwtWxfZeJj8iC/ncAIDLSGgwH6PzRq/QdZ9 25hshk8LmhWS/F9rvKLqiABHaoKdMSauySCbtazQ= Date: Sun, 12 Feb 2023 18:33:19 +0100 From: Greg KH To: Dipanjan Das Cc: jirislaby@kernel.org, Linux Kernel Mailing List , syzkaller , Marius Fleischer , Priyanka Bose Subject: Re: BUG: unable to handle kernel paging request in n_tty_open 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 Sun, Feb 12, 2023 at 09:00:17AM -0800, Dipanjan Das wrote: > Hi, > > We would like to report the following bug which has been found by our > modified version of syzkaller. Do you have a proposed patch for this issue as you seem to be able to reproduce this? Wait, this is a fake problem: > memcpy((void*)0x20000000, "/dev/ttyS3\000", 11); > inject_fault(13); You are manually injecting faults. That's not a normal operation. If you can reproduce this without fault injection, please let us know. Or propose a patch to resolve this? thanks, greg k-h