From: Dave Jones <davej@redhat.com>
To: gregkh@linuxfoundation.org
Cc: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: removing usb debug cable triggers lockdep warning.
Date: Fri, 31 Jan 2014 16:11:18 -0500 [thread overview]
Message-ID: <20140131211118.GA23873@redhat.com> (raw)
usb 3-3: USB disconnect, device number 2
console [ttyUSB0] disabled
debug ttyUSB0: debug converter now disconnected from ttyUSB0
usb_debug 3-3:1.0: device disconnected
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 3 PID: 66 Comm: khubd Not tainted 3.13.0+ #104
ffffffffbb28cf50 000000000f74f0eb ffff880242eb3a08 ffffffffba73a377
ffff880243741740 ffff880242eb3a18 ffffffffba7368b9 ffff880242eb3a90
ffffffffba0c1560 0000000000000003 ffff880242eb2000 ffff880242eb3aa8
Call Trace:
[<ffffffffba73a377>] dump_stack+0x4e/0x7a
[<ffffffffba7368b9>] register_lock_class.part.21+0x38/0x3c
[<ffffffffba0c1560>] __lock_acquire.isra.28+0xa10/0xa50
[<ffffffffba0c1cfd>] lock_acquire+0x8d/0x120
[<ffffffffba24ba88>] ? kernfs_addrm_finish+0x38/0x60
[<ffffffffba24acde>] kernfs_deactivate+0x10e/0x150
[<ffffffffba24ba88>] ? kernfs_addrm_finish+0x38/0x60
[<ffffffffba24ba88>] kernfs_addrm_finish+0x38/0x60
[<ffffffffba24bd00>] kernfs_remove_by_name_ns+0x60/0xc0
[<ffffffffba2498d1>] remove_files.isra.1+0x41/0x80
[<ffffffffba249bc7>] sysfs_remove_group+0x47/0xa0
[<ffffffffba249cf3>] sysfs_remove_groups+0x33/0x50
[<ffffffffba4ded6d>] device_remove_attrs+0x4d/0x80
[<ffffffffba4df9ae>] device_del+0x12e/0x1d0
[<ffffffffba53ce08>] usb_disconnect+0x138/0x1d0
[<ffffffffba540153>] hub_thread+0x723/0x1700
[<ffffffffba09d7c4>] ? finish_task_switch+0x44/0x190
[<ffffffffba0ba030>] ? wake_up_atomic_t+0x30/0x30
[<ffffffffba53fa30>] ? usb_reset_device+0x1d0/0x1d0
[<ffffffffba093dcc>] kthread+0xfc/0x120
[<ffffffffba093cd0>] ? kthread_create_on_node+0x230/0x230
[<ffffffffba74d96c>] ret_from_fork+0x7c/0xb0
[<ffffffffba093cd0>] ? kthread_create_on_node+0x230/0x230
next reply other threads:[~2014-01-31 21:11 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-31 21:11 Dave Jones [this message]
2014-02-01 8:45 ` removing usb debug cable triggers lockdep warning Greg KH
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