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 4E731C7EE26 for ; Mon, 22 May 2023 13:01:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233799AbjEVNB4 (ORCPT ); Mon, 22 May 2023 09:01:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59512 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234175AbjEVNBp (ORCPT ); Mon, 22 May 2023 09:01:45 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C6997C4; Mon, 22 May 2023 06:01:39 -0700 (PDT) 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 5C2F4618EC; Mon, 22 May 2023 13:01:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2E353C433D2; Mon, 22 May 2023 13:01:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1684760498; bh=E3lNBnfQQ0cZMPe43F7eKjkBfPR7qOeiV12BO5T01Gg=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=te41SV04IwsyyG1SeyvxB0eL5FzgZLgThpom66Fd+b8BF0nEniWU0YbrmsQD2VwD0 P2SEnECVqlh0Pc4EOnLS+kF7XYNQ0VJUUlaHHR7LKUpJwntwC2aWS5kqNGk9mx07uu r2JZWWRjJ7RnPRihj+uHZo0wrXSl9BFqEbGbWsxzx1snLuHP6uqzVr3WrU+pDo0gwq eLNx8+Dxrr2PEOCCtWUxniF5+EzBo6GWYhLLKvptb36EjEfQiZ3uhqp/jVRrbvq+Po AYn0gTZP9yu+i2OAtyPvYlfpjyiiebuHS76/DZ0n2kl2S28mtaxSWrlN0We2oc33Rz rjNuQ7cju+BCQ== Date: Mon, 22 May 2023 15:01:33 +0200 From: Christian Brauner To: syzbot Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Subject: Re: [syzbot] [fs?] [usb?] INFO: rcu detected stall in vfs_readlink Message-ID: <20230522-antennen-eislauf-4b5a69a167e3@brauner> References: <000000000000c9c7fa05fc177edf@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <000000000000c9c7fa05fc177edf@google.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, May 19, 2023 at 08:18:45PM -0700, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: a4422ff22142 usb: typec: qcom: Add Qualcomm PMIC Type-C dr.. > git tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing > console output: https://syzkaller.appspot.com/x/log.txt?x=10ce218e280000 > kernel config: https://syzkaller.appspot.com/x/.config?x=2414a945e4542ec1 > dashboard link: https://syzkaller.appspot.com/bug?extid=24d1639a31b024b125bd > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=137d4c06280000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17b758a1280000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/414817142fb7/disk-a4422ff2.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/448dba0d344e/vmlinux-a4422ff2.xz > kernel image: https://storage.googleapis.com/syzbot-assets/d0ad9fe848e2/bzImage-a4422ff2.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+24d1639a31b024b125bd@syzkaller.appspotmail.com > > imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored > imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored I have the strong suspicion that the usb drive is removed or some such nonsense. Doesn't seem an fs bug.