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SubjectWARNING: at drivers/tty/tty_ldisc.c:766 tty_ldisc_reinit+0x7d/0x90()
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Hi,

I get this with the latest linux.git (git 3a5c37) at boot:

[ 7.204114] usb 1-1: khubd timed out on ep0in len=0/255
[ 7.244493] usb 1-1: udev 2, busnum 1, minor = 1
[ 7.245791] usb 1-1: New USB device found, idVendor=9ac4, idProduct=4b8f
[ 7.247330] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 7.249000] usb 1-1: Product: ProxMark-3 RFID Instrument
[ 7.250433] usb 1-1: Manufacturer: J. Westhues
[ 7.252377] usb 1-1: usb_probe_device
[ 7.253911] usb 1-1: configuration #1 chosen from 1 choice
husb: config #1 need 1
husb: 1 interfaces claimed for configuration 1
[ 7.258089] usb 1-1: adding 1-1:1.0 (config #1, interface 0)
[ 7.259765] usbhid 1-1:1.0: usb_probe_interface
[ 7.261003] usbhid 1-1:1.0: usb_probe_interface - got id
[ 7.455562] usbhid 1-1:1.0: looking for a minor, starting at 96
[ 7.457603] generic-usb 0003:9AC4:4B8F.0001: hiddev0,hidraw0: USB
HID v1.00 Device [J. Westhues ProxMark-3 RFID Instrument] on
usb-0000:00:01.2-1/input0
[ 7.462993] drivers/usb/core/inode.c: creating file '002'
[ 74.921035] ------------[ cut here ]------------
[ 74.923120] WARNING: at drivers/tty/tty_ldisc.c:766
tty_ldisc_reinit+0x7d/0x90()
[ 74.926744] Hardware name: Bochs
[ 74.927882] Pid: 1386, comm: login Not tainted 3.0.0-rc7+ #5
[ 74.929408] Call Trace:
[ 74.930391] [<c15e9879>] ? printk+0x18/0x1a
[ 74.931650] [<c103e128>] warn_slowpath_common+0x68/0xa0
[ 74.933367] [<c128515d>] ? tty_ldisc_reinit+0x7d/0x90
[ 74.934907] [<c128515d>] ? tty_ldisc_reinit+0x7d/0x90
[ 74.936242] [<c103e1fd>] warn_slowpath_null+0x1d/0x20
[ 74.937584] [<c128515d>] tty_ldisc_reinit+0x7d/0x90
[ 74.939152] [<c128577f>] tty_ldisc_hangup+0xdf/0x200
[ 74.968743] [<c127e4f5>] __tty_hangup+0xe5/0x360
[ 74.970158] [<c127ff3c>] disassociate_ctty+0x6c/0x200
[ 74.971526] [<c104198b>] do_exit+0x55b/0x7d0
[ 74.972745] [<c127dd20>] ? tty_write_lock+0x50/0x50
[ 74.974052] [<c1041c79>] do_group_exit+0x39/0xa0
[ 74.975338] [<c1041cf3>] sys_exit_group+0x13/0x20
[ 74.976658] [<c15ec85c>] sysenter_do_call+0x12/0x2c
[ 74.977938] [<c15e0000>] ? pci_fixup_i450gx+0x40/0x53
[ 74.979462] ---[ end trace c3cfae8b1239077b ]---
This is inside qemu/kvm with usb pass-through: -usbdevice host:9ac4:4b8f

Any ideas?

Thanks,


Vegard


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