From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from netrider.rowland.org (netrider.rowland.org [192.131.102.5]) by smtp.subspace.kernel.org (Postfix) with SMTP id 9C53C4778C for ; Mon, 4 Mar 2024 14:59:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.131.102.5 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709564345; cv=none; b=DdwDQUS+ucOh5zTlNtPRNz+wmZcrKe7fInej6ftRfK9wjXbb4gyMR7Fz7PdoAexJzLSXCyPrbXPCnvDjCeCzzo26ovtVkHIHnztJ423JLjrzJsdQNHu5Go82VjnOebtV/oGPPjqYNdrg4Z9Wi2e9zdbBspUs1HqJSIcI5ziilbU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709564345; c=relaxed/simple; bh=CEVJTvZMpHOkYg+nGBcfcqSN0V25NksUunP3f5onNj8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=nc56MvPxU43o3urbPtx33BfrEc4Sx8Pk+tUTD/or/RzpNOApWuZRzLJNQLje+71jMDmJLGYS2XTO85YJ7useTJzxYvyq4R9T6N61+wQDW0bdbCNT05x8kQo4IebhgRMC1QBQ8ESzDKJdFGmDAwmrxtqqmfyjcbTz0uv/Kpfxfs8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=rowland.harvard.edu; spf=pass smtp.mailfrom=netrider.rowland.org; arc=none smtp.client-ip=192.131.102.5 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=rowland.harvard.edu Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=netrider.rowland.org Received: (qmail 122693 invoked by uid 1000); 4 Mar 2024 09:59:02 -0500 Date: Mon, 4 Mar 2024 09:59:02 -0500 From: Alan Stern To: Sam Sun Cc: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, "xrivendell7@gmail.com" , Greg KH , hgajjar@de.adit-jv.com, quic_ugoswami@quicinc.com, stanley_chang@realtek.com, heikki.krogerus@linux.intel.com Subject: Re: [Bug] INFO: task hung in hub_activate Message-ID: References: Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Mon, Mar 04, 2024 at 08:10:02PM +0800, Sam Sun wrote: > Dear developers and maintainers, > > We encountered a task hung in function hub_activate(). It was reported > before by Syzbot several years ago > (https://groups.google.com/g/syzkaller-lts-bugs/c/_komEgHj03Y/m/rbcVKyLXBwAJ), > but no repro at that time. We have a C repro this time and kernel > config is attached to this email. The bug report is listed below. > If you have any questions, please contact us. Can you give a pointer to the part of the kernel log that precedes the bug portion? Alan Stern