linux-kernel - EHCI resume sysfs duplicates (was: Re: Linux 2.6.33-rc2

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Date:	Sat, 26 Dec 2009 10:36:13 +0100
From:	Borislav Petkov <petkovbb@...glemail.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Greg Kroah-Hartman <gregkh@...e.de>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: EHCI resume sysfs duplicates (was: Re: Linux 2.6.33-rc2 - Merry
 Christmas ...)

Hi,

I'm getting the following warning upon resume.
Kernel is 2.6.33-rc2 + one unrelated PCI fix¹

------------[ cut here ]------------
WARNING: at fs/sysfs/dir.c:477 sysfs_add_one+0x107/0x121()
Hardware name: System Product Name
sysfs: cannot create duplicate filename '/devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/ep_81'
Modules linked in: binfmt_misc kvm_amd kvm powernow_k8 cpufreq_ondemand cpufreq_powersave cpufreq_userspace freq_table c
pufreq_conservative ipv6 vfat fat 8250_pnp 8250 pcspkr serial_core ohci_hcd k10temp edac_core
Pid: 279, comm: khubd Not tainted 2.6.33-rc2-00001-g6d7daec #1
Call Trace:
 [<ffffffff8103b010>] warn_slowpath_common+0x7c/0x94
 [<ffffffff8103b07f>] warn_slowpath_fmt+0x41/0x43
 [<ffffffff8112c448>] sysfs_add_one+0x107/0x121
 [<ffffffff8118b8c1>] ? kobject_add_internal+0x9e/0x1a0
 [<ffffffff8112c9d8>] create_dir+0x5d/0x98
 [<ffffffff8112ca50>] sysfs_create_dir+0x3d/0x50
 [<ffffffff813eb98b>] ? _raw_spin_unlock+0x35/0x52
 [<ffffffff8118b902>] kobject_add_internal+0xdf/0x1a0
 [<ffffffff8118ba99>] kobject_add_varg+0x41/0x50
 [<ffffffff8118bb63>] kobject_add+0x64/0x66
 [<ffffffff8118b79a>] ? kobject_get+0x1a/0x22
 [<ffffffff812930dc>] device_add+0xad/0x4e6
 [<ffffffff81195a7b>] ? __raw_spin_lock_init+0x31/0x52
 [<ffffffff81293533>] device_register+0x1e/0x22
 [<ffffffff812ea5ae>] usb_create_ep_devs+0xfd/0x127
 [<ffffffff812e3604>] create_intf_ep_devs+0x50/0x6c
 [<ffffffff812e4a81>] usb_set_interface+0x228/0x23a
 [<ffffffff813eb938>] ? _raw_spin_unlock_irqrestore+0x5b/0x79
 [<ffffffff812de26d>] usb_reset_and_verify_device+0x412/0x497
 [<ffffffff812de577>] usb_port_resume+0x164/0x25b
 [<ffffffff813e9404>] ? mutex_unlock+0xe/0x10
 [<ffffffff812edc84>] generic_resume+0x1c/0x1e
 [<ffffffff812e5b1c>] usb_resume_device+0x3a/0x3c
 [<ffffffff812e61a9>] usb_resume_both+0x70/0x10a
 [<ffffffff812e6e6f>] usb_external_resume_device+0x39/0x77
 [<ffffffff812dfd51>] hub_thread+0x4eb/0xfc6
 [<ffffffff813eb8c0>] ? _raw_spin_unlock_irq+0x41/0x5e
 [<ffffffff81057a00>] ? autoremove_wake_function+0x0/0x39
 [<ffffffff813eb938>] ? _raw_spin_unlock_irqrestore+0x5b/0x79
 [<ffffffff812df866>] ? hub_thread+0x0/0xfc6
 [<ffffffff81057571>] kthread+0x7f/0x87
 [<ffffffff810030e4>] kernel_thread_helper+0x4/0x10
 [<ffffffff813eb8c0>] ? _raw_spin_unlock_irq+0x41/0x5e
 [<ffffffff813ebe54>] ? restore_args+0x0/0x30
 [<ffffffff810574f2>] ? kthread+0x0/0x87
 [<ffffffff810030e0>] ? kernel_thread_helper+0x0/0x10
---[ end trace 044a12284a40512a ]---

.config and dmesg attached.


¹http://git.kernel.org/?p=linux/kernel/git/jbarnes/pci-2.6.git;a=commit;h=2820f333e3b4ad96590093efbed7b3400bcf492b
-- 
Regards/Gruss,
    Boris.

View attachment ".config" of type "text/plain" (61770 bytes)

View attachment "dmesg.log" of type "text/plain" (53659 bytes)