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[ 5557.933979] openbltc[3510]: segfault at fc8e2a64 ip 00315d48 sp bfa13f50 error 5 in libusb-1.0.so.0.0.0[30f000+b000]
[ 5557.934077] usb 1-3: USB disconnect, address 4
[ 5558.208081] usb 1-3: new high speed USB device using ehci_hcd and address 5
[ 5563.328091] usb 1-3: device descriptor read/64, error -71
[ 5568.552116] usb 1-3: device descriptor read/64, error -71
[ 5568.768103] usb 1-3: new high speed USB device using ehci_hcd and address 6
[ 5573.888057] usb 1-3: device descriptor read/64, error -71
[ 5579.112075] usb 1-3: device descriptor read/64, error -71
[ 5579.328066] usb 1-3: new high speed USB device using ehci_hcd and address 7
[ 5584.744058] usb 1-3: device not accepting address 7, error -71
[ 5584.856087] usb 1-3: new high speed USB device using ehci_hcd and address 8
[ 5590.268060] usb 1-3: device not accepting address 8, error -71
[ 5590.268092] hub 1-0:1.0: unable to enumerate USB device on port 3
[ 5590.660055] usb 3-1: new full speed USB device using uhci_hcd and address 2
[ 5595.780064] usb 3-1: device descriptor read/64, error -71
[ 5601.004256] usb 3-1: device descriptor read/64, error -71
[ 5601.220074] usb 3-1: new full speed USB device using uhci_hcd and address 3
[ 5602.068153] hub 3-0:1.0: unable to enumerate USB device on port 1
[ 5607.364072] usb 1-3: new high speed USB device using ehci_hcd and address 9
[ 5612.484062] usb 1-3: device descriptor read/64, error -71
[ 5617.708076] usb 1-3: device descriptor read/64, error -71
[ 5617.924077] usb 1-3: new high speed USB device using ehci_hcd and address 10
[ 5623.044161] usb 1-3: device descriptor read/64, error -71
[ 5628.268078] usb 1-3: device descriptor read/64, error -71
[ 5628.484085] usb 1-3: new high speed USB device using ehci_hcd and address 11
[ 5633.896050] usb 1-3: device not accepting address 11, error -71
[ 5634.008076] usb 1-3: new high speed USB device using ehci_hcd and address 12
[ 5639.420059] usb 1-3: device not accepting address 12, error -71
[ 5639.420093] hub 1-0:1.0: unable to enumerate USB device on port 3
[ 5639.684097] usb 3-1: new full speed USB device using uhci_hcd and address 4
[ 5644.804046] usb 3-1: device descriptor read/64, error -71
[ 5650.028088] usb 3-1: device descriptor read/64, error -71
[ 5650.244086] usb 3-1: new full speed USB device using uhci_hcd and address 5
[ 5655.364067] usb 3-1: device descriptor read/64, error -71
[ 5660.588061] usb 3-1: device descriptor read/64, error -71
[ 5660.804071] usb 3-1: new full speed USB device using uhci_hcd and address 6
[ 5666.212061] usb 3-1: device not accepting address 6, error -71
[ 5666.324065] usb 3-1: new full speed USB device using uhci_hcd and address 7
[ 5671.732047] usb 3-1: device not accepting address 7, error -71
[ 5671.732079] hub 3-0:1.0: unable to enumerate USB device on port 1
[ 6035.220074] usb 1-3: new high speed USB device using ehci_hcd and address 13
[ 6040.340077] usb 1-3: device descriptor read/64, error -71
[ 6045.564071] usb 1-3: device descriptor read/64, error -71
[ 6045.780083] usb 1-3: new high speed USB device using ehci_hcd and address 14
[ 6050.900064] usb 1-3: device descriptor read/64, error -71
[ 6056.124109] usb 1-3: device descriptor read/64, error -71
[ 6056.340134] usb 1-3: new high speed USB device using ehci_hcd and address 15
[ 6061.752075] usb 1-3: device not accepting address 15, error -71
[ 6061.864102] usb 1-3: new high speed USB device using ehci_hcd and address 16
[ 6067.276047] usb 1-3: device not accepting address 16, error -71
[ 6067.276080] hub 1-0:1.0: unable to enumerate USB device on port 3
[ 6067.544071] usb 3-1: new full speed USB device using uhci_hcd and address 8
[ 6072.720066] usb 3-1: device descriptor read/64, error -71
[ 6077.944083] usb 3-1: device descriptor read/64, error -71
[ 6078.164061] usb 3-1: new full speed USB device using uhci_hcd and address 9
[ 6083.284080] usb 3-1: device descriptor read/64, error -71
[ 6088.508075] usb 3-1: device descriptor read/64, error -71
[ 6088.724096] usb 3-1: new full speed USB device using uhci_hcd and address 10
[ 6094.132062] usb 3-1: device not accepting address 10, error -71
[ 6094.244071] usb 3-1: new full speed USB device using uhci_hcd and address 11
[ 6099.652064] usb 3-1: device not accepting address 11, error -71
[ 6099.652095] hub 3-0:1.0: unable to enumerate USB device on port 1
[ 6203.220078] usb 1-3: new high speed USB device using ehci_hcd and address 17