From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753593AbcLBQHZ (ORCPT ); Fri, 2 Dec 2016 11:07:25 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:39862 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753248AbcLBQHX (ORCPT ); Fri, 2 Dec 2016 11:07:23 -0500 Date: Fri, 2 Dec 2016 16:58:27 +0100 From: Greg Kroah-Hartman To: Andrey Konovalov Cc: Valentina Manea , Shuah Khan , linux-usb@vger.kernel.org, Peter Zijlstra , Ingo Molnar , LKML , Dmitry Vyukov , Kostya Serebryany Subject: Re: usb: warning in vhci_hcd_probe/lockdep_init_map Message-ID: <20161202155827.GC32414@kroah.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.7.1 (2016-10-04) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Dec 02, 2016 at 03:35:44PM +0100, Andrey Konovalov wrote: > Hi! > > I've got the following error report while booting the kernel with > various usb configs enabled. Any hint as to what these "various usb configs" are? > On commit 2caceb3294a78c389b462e7e236a4e744a53a474 (Dec 1). > > gadgetfs: USB Gadget filesystem, version 24 Aug 2004 > usbip_core: USB/IP Core v1.0.0 > vhci_hcd vhci_hcd: USB/IP Virtual Host Controller > vhci_hcd vhci_hcd: new USB bus registered, assigned bus number 2 > BUG: key ffff88006a7e8d18 not in .data! > ------------[ cut here ]------------ > WARNING: CPU: 0 PID: 1 at kernel/locking/lockdep.c:3131 > lockdep_init_map+0x60c/0x770 > DEBUG_LOCKS_WARN_ON(1)[ 1.567044] Modules linked in: > CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.9.0-rc7+ #58 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 > ffff88006bce6eb8 ffffffff81f96c8a ffffffff00000a02 1ffff1000d79cd6a > ffffed000d79cd62 000000046bce6ed8 0000000041b58ab3 ffffffff8598af40 > ffffffff81f969f8 0000000000000000 0000000041b58ab3 0000000000000200 > Call Trace: > [< inline >] __dump_stack lib/dump_stack.c:15 > [] dump_stack+0x292/0x398 lib/dump_stack.c:51 > [] __warn+0x19f/0x1e0 kernel/panic.c:550 > [] warn_slowpath_fmt+0xc5/0x110 kernel/panic.c:565 > [] lockdep_init_map+0x60c/0x770 kernel/locking/lockdep.c:3131 > [] __kernfs_create_file+0x114/0x2a0 fs/kernfs/file.c:954 > [] sysfs_add_file_mode_ns+0x225/0x520 fs/sysfs/file.c:305 > [< inline >] create_files fs/sysfs/group.c:64 > [] internal_create_group+0x239/0x8f0 fs/sysfs/group.c:134 > [] sysfs_create_group+0x1f/0x30 fs/sysfs/group.c:156 > [] vhci_start+0x5b4/0x7a0 drivers/usb/usbip/vhci_hcd.c:978 > [] usb_add_hcd+0x8da/0x1c60 drivers/usb/core/hcd.c:2867 > [] vhci_hcd_probe+0x97/0x130 drivers/usb/usbip/vhci_hcd.c:1103 > [] platform_drv_probe+0x8a/0x180 drivers/base/platform.c:568 > [< inline >] really_probe drivers/base/dd.c:375 > [] driver_probe_device+0x514/0x980 drivers/base/dd.c:515 > [] __device_attach_driver+0x22b/0x290 drivers/base/dd.c:610 > [] bus_for_each_drv+0x15c/0x200 drivers/base/bus.c:463 > [] __device_attach+0x266/0x3c0 drivers/base/dd.c:667 > [] device_initial_probe+0x1a/0x20 drivers/base/dd.c:714 > [] bus_probe_device+0x1e6/0x290 drivers/base/bus.c:557 > [] device_add+0xd06/0x1660 drivers/base/core.c:1136 > [] platform_device_add+0x315/0x660 drivers/base/platform.c:408 > [] platform_device_register_full+0x396/0x4b0 drivers/base/platform.c:540 > [< inline >] platform_device_register_resndata ./include/linux/platform_device.h:111 > [< inline >] platform_device_register_simple ./include/linux/platform_device.h:140 > [< inline >] add_platform_device drivers/usb/usbip/vhci_hcd.c:1213 > [] vhci_hcd_init+0x215/0x305 drivers/usb/usbip/vhci_hcd.c:1254 > [] do_one_initcall+0xf6/0x360 init/main.c:778 > [< inline >] do_initcall_level init/main.c:844 > [< inline >] do_initcalls init/main.c:852 > [< inline >] do_basic_setup init/main.c:870 > [] kernel_init_freeable+0x5c7/0x6a1 init/main.c:1017 > [] kernel_init+0x13/0x180 init/main.c:943 > [] ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:433 > ---[ end trace c33c7b202cf3aac8 ]--- Odd, I don't see anything strange here. Shuah, any ideas what is going wrong here? thanks, greg k-h