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=-7.5 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=unavailable 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 B4133C43219 for ; Tue, 30 Apr 2019 15:50:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8467A21734 for ; Tue, 30 Apr 2019 15:50:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=kroah.com header.i=@kroah.com header.b="h0lrshcc"; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="6qvv9l87" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726167AbfD3PuM (ORCPT ); Tue, 30 Apr 2019 11:50:12 -0400 Received: from wout1-smtp.messagingengine.com ([64.147.123.24]:56469 "EHLO wout1-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726061AbfD3PuL (ORCPT ); Tue, 30 Apr 2019 11:50:11 -0400 Received: from compute6.internal (compute6.nyi.internal [10.202.2.46]) by mailout.west.internal (Postfix) with ESMTP id 7F833581; Tue, 30 Apr 2019 11:50:10 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute6.internal (MEProxy); Tue, 30 Apr 2019 11:50:10 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kroah.com; h= date:from:to:cc:subject:message-id:references:mime-version :content-type:in-reply-to; s=fm3; bh=Ka2lC0fzN77DodlXYYV3lz1zRFB CP1FnsPu7ZLb1emw=; b=h0lrshccUp92VOV8cTUkafQlL3gF8O+uFxhkNin14U8 kgWPQY/jLWIHIoH9OV6wPrMBhCqU0AGHYMbOeOwQd8cJrinXL9SKcHSgQTyy3tjA eyTR1en+rM6XTwMUnE5YbFdr81bynNZjGpAALBl9TxnDDkRXRbzQXuj2P4Lz7bJb HHKEOVo54MR3HDvTA6t2JMqxQDOA3pLz0yU8QmiTfqQgZpFN3Gi+Ob/dDqX/aP7a HS+gH3YPMRyeNehcaRp+cHFofxyXptAIsNATFAXjJ+RbnlDK5L6KBiOxxxE7N8af Kq7Jf8zX0+hw91BxdcmACf21mWmthbdEbwy5EpYa+ig== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm2; bh=Ka2lC0 fzN77DodlXYYV3lz1zRFBCP1FnsPu7ZLb1emw=; b=6qvv9l877BSmrp9CzTh+zm bwKQRdTA2lIcid9jldDfpkVZBRRT+F1GBbLqqM3EGwP71RP3dTDjB4s85LhuvG+z bZDWAt9LJAV/RavMaKUUKdUQiCStVuBh5ftOhtuHbmjXheGd7K64ZqVTBp05j9t9 tdyJpxJpoOHU5DGPWOqK2YohzGnqtiGNFLoDhK07F5/Bq4Ka5ED7Y7XSWiOB6WnD zsyUTbcpWoPzYPgeOt48134qlXDZcT7n6JuTXEbHGCT9gN/L71ZyOU49RwvA+DIs ip91tmjfbE8jKXhfJJDj71jQ7PwTrc/9UoKumkWxTx2jm5AZr2N1rKh/iZK0Jkbg == X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduuddrieehgdefgecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecuogfuuhhsphgvtghtffhomhgrihhnucdlgeelmdenuc fjughrpeffhffvuffkfhggtggujggfsehttdertddtredvnecuhfhrohhmpefirhgvghcu mffjuceoghhrvghgsehkrhhorghhrdgtohhmqeenucffohhmrghinhepghhithhhuhgsrd gtohhmpdgrphhpshhpohhtrdgtohhmnecukfhppeekfedrkeeirdekledruddtjeenucfr rghrrghmpehmrghilhhfrhhomhepghhrvghgsehkrhhorghhrdgtohhmnecuvehluhhsth gvrhfuihiivgeptd X-ME-Proxy: Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) by mail.messagingengine.com (Postfix) with ESMTPA id F0F58E48A7; Tue, 30 Apr 2019 11:50:08 -0400 (EDT) Date: Tue, 30 Apr 2019 17:50:05 +0200 From: Greg KH To: syzbot Cc: andreyknvl@google.com, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: WARNING: Detected a wedged cx25840 chip; the device will not work. Message-ID: <20190430155005.GA20649@kroah.com> References: <00000000000048aa750587c052ef@google.com> <20190430153516.GA23459@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190430153516.GA23459@kroah.com> User-Agent: Mutt/1.11.4 (2019-03-13) Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org On Tue, Apr 30, 2019 at 05:35:16PM +0200, Greg KH wrote: > On Tue, Apr 30, 2019 at 07:36:07AM -0700, syzbot wrote: > > Hello, > > > > syzbot found the following crash on: > > > > HEAD commit: 9a33b369 usb-fuzzer: main usb gadget fuzzer driver > > git tree: https://github.com/google/kasan.git usb-fuzzer > > console output: https://syzkaller.appspot.com/x/log.txt?x=12df67c3200000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=23e37f59d94ddd15 > > dashboard link: https://syzkaller.appspot.com/bug?extid=170a86bf206dd2c6217e > > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=108a28f3200000 > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=145d8a2d200000 > > > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > > Reported-by: syzbot+170a86bf206dd2c6217e@syzkaller.appspotmail.com > > > > usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 > > pvrusb2: Hardware description: Gotview USB 2.0 DVD 2 > > pvrusb2: Invalid write control endpoint > > usb 1-1: USB disconnect, device number 2 > > pvrusb2: Invalid write control endpoint > > pvrusb2: WARNING: Detected a wedged cx25840 chip; the device will not work. > > pvrusb2: WARNING: Try power cycling the pvrusb2 device. > > pvrusb2: WARNING: Disabling further access to the device to prevent other > > foul-ups. > > pvrusb2: Device being rendered inoperable > > cx25840 0-0044: Unable to detect h/w, assuming cx23887 > > cx25840 0-0044: cx23887 A/V decoder found @ 0x88 (pvrusb2_a) > > pvrusb2: Attached sub-driver cx25840 > > pvrusb2: Attempted to execute control transfer when device not ok > > pvrusb2: Attempted to execute control transfer when device not ok > > As the driver said, power cycle your device, it crashed :) > > Seriously, I think your script detection failed here, sorry. Ah, same issue as the other "WARNING" message, sorry for the noise.