FIQ WiFi unload/reload: NOOBS 1.2.1 -> rpi-update today (plus little dmesg preamble)

[jackokring]

Working ok ssh -X ... except under high loads. ssh hang and WiFi unload/reloads. Some apt-getting and some graphical X serving were the high loads. No such problem before the rpi-update.

[    9.613811] usbcore: registered new interface driver btusb
[    9.742130] usbcore: registered new interface driver rtl8192cu
[   15.392116] EXT4-fs (sda1): re-mounted. Opts: (null)
[   15.872608] EXT4-fs (sda1): re-mounted. Opts: (null)
[   31.671042] Adding 102396k swap on /var/swap.  Priority:-1 extents:1 across:102396k 
[   32.212222] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   32.212252] Bluetooth: BNEP filters: protocol multicast
[   32.229272] Bluetooth: RFCOMM TTY layer initialized
[   32.229322] Bluetooth: RFCOMM socket layer initialized
[   32.229337] Bluetooth: RFCOMM ver 1.11
[ 1962.341959] usb 1-1.3.2: USB disconnect, device number 6
[ 1963.138759] ------------[ cut here ]------------
[ 1963.138836] WARNING: at fs/proc/generic.c:849 remove_proc_entry+0x280/0x2a0()
[ 1963.138877] remove_proc_entry: removing non-empty directory 'rtl819xC/wlan0', leaking at least 'ampdu_enable'
[ 1963.138890] Modules linked in: rfcomm bnep binfmt_misc snd_bcm2835 snd_pcm snd_page_alloc snd_seq snd_seq_device snd_timer snd btusb bluetooth evdev rfkill joydev 8192cu leds_gpio led_class
[ 1963.139017] [<c0013a7c>] (unwind_backtrace+0x0/0xf0) from [<c001e2ec>] (warn_slowpath_common+0x4c/0x64)
[ 1963.139050] [<c001e2ec>] (warn_slowpath_common+0x4c/0x64) from [<c001e398>] (warn_slowpath_fmt+0x30/0x40)
[ 1963.139099] [<c001e398>] (warn_slowpath_fmt+0x30/0x40) from [<c0118264>] (remove_proc_entry+0x280/0x2a0)
[ 1963.139564] [<c0118264>] (remove_proc_entry+0x280/0x2a0) from [<bf044748>] (rtw_proc_remove_one+0xf4/0x188 [8192cu])
[ 1963.140192] [<bf044748>] (rtw_proc_remove_one+0xf4/0x188 [8192cu]) from [<bf0456bc>] (rtw_dev_remove+0x94/0x134 [8192cu])
[ 1963.140560] [<bf0456bc>] (rtw_dev_remove+0x94/0x134 [8192cu]) from [<c0278054>] (usb_unbind_interface+0x48/0x108)
[ 1963.140638] [<c0278054>] (usb_unbind_interface+0x48/0x108) from [<c0237670>] (__device_release_driver+0x58/0xb0)
[ 1963.140668] [<c0237670>] (__device_release_driver+0x58/0xb0) from [<c02376e4>] (device_release_driver+0x1c/0x28)
[ 1963.140710] [<c02376e4>] (device_release_driver+0x1c/0x28) from [<c02371ec>] (bus_remove_device+0xc4/0xe4)
[ 1963.140747] [<c02371ec>] (bus_remove_device+0xc4/0xe4) from [<c023538c>] (device_del+0xf8/0x17c)
[ 1963.140773] [<c023538c>] (device_del+0xf8/0x17c) from [<c0276730>] (usb_disable_device+0xa0/0x1c8)
[ 1963.140813] [<c0276730>] (usb_disable_device+0xa0/0x1c8) from [<c026f9d0>] (usb_disconnect+0x7c/0x124)
[ 1963.140865] [<c026f9d0>] (usb_disconnect+0x7c/0x124) from [<c027088c>] (hub_thread+0x31c/0x10d4)
[ 1963.140905] [<c027088c>] (hub_thread+0x31c/0x10d4) from [<c003a7ec>] (kthread+0x88/0x94)
[ 1963.140945] [<c003a7ec>] (kthread+0x88/0x94) from [<c000e9fc>] (kernel_thread_exit+0x0/0x8)
[ 1963.140975] ---[ end trace 33ac63bf6371b35b ]---
[ 1963.378860] usb 1-1.3.2: new high-speed USB device number 10 using dwc_otg
[ 1963.481028] usb 1-1.3.2: New USB device found, idVendor=7392, idProduct=7811
[ 1963.481058] usb 1-1.3.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1963.481076] usb 1-1.3.2: Product: 802.11n WLAN Adapter
[ 1963.481089] usb 1-1.3.2: Manufacturer: Realtek
[ 1963.481120] usb 1-1.3.2: SerialNumber: 00e04c000001
[85319.330588] usb 1-1.3.2: USB disconnect, device number 10
[85319.607539] ------------[ cut here ]------------
[85319.607608] WARNING: at fs/proc/generic.c:849 remove_proc_entry+0x280/0x2a0()
[85319.607639] remove_proc_entry: removing non-empty directory 'rtl819xC/wlan0', leaking at least 'ampdu_enable'
[85319.607651] Modules linked in: rfcomm bnep binfmt_misc snd_bcm2835 snd_pcm snd_page_alloc snd_seq snd_seq_device snd_timer snd btusb bluetooth evdev rfkill joydev 8192cu leds_gpio led_class
[85319.607773] [<c0013a7c>] (unwind_backtrace+0x0/0xf0) from [<c001e2ec>] (warn_slowpath_common+0x4c/0x64)
[85319.607803] [<c001e2ec>] (warn_slowpath_common+0x4c/0x64) from [<c001e398>] (warn_slowpath_fmt+0x30/0x40)
[85319.607834] [<c001e398>] (warn_slowpath_fmt+0x30/0x40) from [<c0118264>] (remove_proc_entry+0x280/0x2a0)
[85319.608335] [<c0118264>] (remove_proc_entry+0x280/0x2a0) from [<bf044748>] (rtw_proc_remove_one+0xf4/0x188 [8192cu])
[85319.608971] [<bf044748>] (rtw_proc_remove_one+0xf4/0x188 [8192cu]) from [<bf0456bc>] (rtw_dev_remove+0x94/0x134 [8192cu])
[85319.609337] [<bf0456bc>] (rtw_dev_remove+0x94/0x134 [8192cu]) from [<c0278054>] (usb_unbind_interface+0x48/0x108)
[85319.609408] [<c0278054>] (usb_unbind_interface+0x48/0x108) from [<c0237670>] (__device_release_driver+0x58/0xb0)
[85319.609439] [<c0237670>] (__device_release_driver+0x58/0xb0) from [<c02376e4>] (device_release_driver+0x1c/0x28)
[85319.609462] [<c02376e4>] (device_release_driver+0x1c/0x28) from [<c02371ec>] (bus_remove_device+0xc4/0xe4)
[85319.609516] [<c02371ec>] (bus_remove_device+0xc4/0xe4) from [<c023538c>] (device_del+0xf8/0x17c)
[85319.609546] [<c023538c>] (device_del+0xf8/0x17c) from [<c0276730>] (usb_disable_device+0xa0/0x1c8)
[85319.609582] [<c0276730>] (usb_disable_device+0xa0/0x1c8) from [<c026f9d0>] (usb_disconnect+0x7c/0x124)
[85319.609610] [<c026f9d0>] (usb_disconnect+0x7c/0x124) from [<c027088c>] (hub_thread+0x31c/0x10d4)
[85319.609661] [<c027088c>] (hub_thread+0x31c/0x10d4) from [<c003a7ec>] (kthread+0x88/0x94)
[85319.609699] [<c003a7ec>] (kthread+0x88/0x94) from [<c000e9fc>] (kernel_thread_exit+0x0/0x8)
[85319.609713] ---[ end trace 33ac63bf6371b35c ]---
[85319.857797] usb 1-1.3.2: new high-speed USB device number 11 using dwc_otg
[85319.959841] usb 1-1.3.2: New USB device found, idVendor=7392, idProduct=7811
[85319.959872] usb 1-1.3.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[85319.959887] usb 1-1.3.2: Product: 802.11n WLAN Adapter
[85319.959904] usb 1-1.3.2: Manufacturer: Realtek
[85319.959917] usb 1-1.3.2: SerialNumber: 00e04c000001
[87543.248706] usb 1-1.3.2: USB disconnect, device number 11
[87544.044553] ------------[ cut here ]------------
[87544.044638] WARNING: at fs/proc/generic.c:849 remove_proc_entry+0x280/0x2a0()
[87544.044655] remove_proc_entry: removing non-empty directory 'rtl819xC/wlan0', leaking at least 'ampdu_enable'
[87544.044664] Modules linked in: rfcomm bnep binfmt_misc snd_bcm2835 snd_pcm snd_page_alloc snd_seq snd_seq_device snd_timer snd btusb bluetooth evdev rfkill joydev 8192cu leds_gpio led_class
[87544.044805] [<c0013a7c>] (unwind_backtrace+0x0/0xf0) from [<c001e2ec>] (warn_slowpath_common+0x4c/0x64)
[87544.044852] [<c001e2ec>] (warn_slowpath_common+0x4c/0x64) from [<c001e398>] (warn_slowpath_fmt+0x30/0x40)
[87544.044884] [<c001e398>] (warn_slowpath_fmt+0x30/0x40) from [<c0118264>] (remove_proc_entry+0x280/0x2a0)
[87544.045339] [<c0118264>] (remove_proc_entry+0x280/0x2a0) from [<bf044748>] (rtw_proc_remove_one+0xf4/0x188 [8192cu])
[87544.045959] [<bf044748>] (rtw_proc_remove_one+0xf4/0x188 [8192cu]) from [<bf0456bc>] (rtw_dev_remove+0x94/0x134 [8192cu])
[87544.046315] [<bf0456bc>] (rtw_dev_remove+0x94/0x134 [8192cu]) from [<c0278054>] (usb_unbind_interface+0x48/0x108)
[87544.046386] [<c0278054>] (usb_unbind_interface+0x48/0x108) from [<c0237670>] (__device_release_driver+0x58/0xb0)
[87544.046416] [<c0237670>] (__device_release_driver+0x58/0xb0) from [<c02376e4>] (device_release_driver+0x1c/0x28)
[87544.046440] [<c02376e4>] (device_release_driver+0x1c/0x28) from [<c02371ec>] (bus_remove_device+0xc4/0xe4)
[87544.046491] [<c02371ec>] (bus_remove_device+0xc4/0xe4) from [<c023538c>] (device_del+0xf8/0x17c)
[87544.046519] [<c023538c>] (device_del+0xf8/0x17c) from [<c0276730>] (usb_disable_device+0xa0/0x1c8)
[87544.046559] [<c0276730>] (usb_disable_device+0xa0/0x1c8) from [<c026f9d0>] (usb_disconnect+0x7c/0x124)
[87544.046622] [<c026f9d0>] (usb_disconnect+0x7c/0x124) from [<c027088c>] (hub_thread+0x31c/0x10d4)
[87544.046664] [<c027088c>] (hub_thread+0x31c/0x10d4) from [<c003a7ec>] (kthread+0x88/0x94)
[87544.046706] [<c003a7ec>] (kthread+0x88/0x94) from [<c000e9fc>] (kernel_thread_exit+0x0/0x8)
[87544.046742] ---[ end trace 33ac63bf6371b35d ]---
[87544.284763] usb 1-1.3.2: new high-speed USB device number 12 using dwc_otg
[87544.386914] usb 1-1.3.2: New USB device found, idVendor=7392, idProduct=7811
[87544.386943] usb 1-1.3.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[87544.386959] usb 1-1.3.2: Product: 802.11n WLAN Adapter
[87544.386972] usb 1-1.3.2: Manufacturer: Realtek
[87544.387002] usb 1-1.3.2: SerialNumber: 00e04c000001
[87990.285583] usb 1-1.3.2: USB disconnect, device number 12
[87991.604456] ------------[ cut here ]------------
[87991.604531] WARNING: at fs/proc/generic.c:849 remove_proc_entry+0x280/0x2a0()
[87991.604573] remove_proc_entry: removing non-empty directory 'rtl819xC/wlan0', leaking at least 'ampdu_enable'
[87991.604586] Modules linked in: rfcomm bnep binfmt_misc snd_bcm2835 snd_pcm snd_page_alloc snd_seq snd_seq_device snd_timer snd btusb bluetooth evdev rfkill joydev 8192cu leds_gpio led_class
[87991.604712] [<c0013a7c>] (unwind_backtrace+0x0/0xf0) from [<c001e2ec>] (warn_slowpath_common+0x4c/0x64)
[87991.604744] [<c001e2ec>] (warn_slowpath_common+0x4c/0x64) from [<c001e398>] (warn_slowpath_fmt+0x30/0x40)
[87991.604792] [<c001e398>] (warn_slowpath_fmt+0x30/0x40) from [<c0118264>] (remove_proc_entry+0x280/0x2a0)
[87991.605254] [<c0118264>] (remove_proc_entry+0x280/0x2a0) from [<bf044748>] (rtw_proc_remove_one+0xf4/0x188 [8192cu])
[87991.605873] [<bf044748>] (rtw_proc_remove_one+0xf4/0x188 [8192cu]) from [<bf0456bc>] (rtw_dev_remove+0x94/0x134 [8192cu])
[87991.606236] [<bf0456bc>] (rtw_dev_remove+0x94/0x134 [8192cu]) from [<c0278054>] (usb_unbind_interface+0x48/0x108)
[87991.606314] [<c0278054>] (usb_unbind_interface+0x48/0x108) from [<c0237670>] (__device_release_driver+0x58/0xb0)
[87991.606344] [<c0237670>] (__device_release_driver+0x58/0xb0) from [<c02376e4>] (device_release_driver+0x1c/0x28)
[87991.606370] [<c02376e4>] (device_release_driver+0x1c/0x28) from [<c02371ec>] (bus_remove_device+0xc4/0xe4)
[87991.606420] [<c02371ec>] (bus_remove_device+0xc4/0xe4) from [<c023538c>] (device_del+0xf8/0x17c)
[87991.606448] [<c023538c>] (device_del+0xf8/0x17c) from [<c0276730>] (usb_disable_device+0xa0/0x1c8)
[87991.606487] [<c0276730>] (usb_disable_device+0xa0/0x1c8) from [<c026f9d0>] (usb_disconnect+0x7c/0x124)
[87991.606539] [<c026f9d0>] (usb_disconnect+0x7c/0x124) from [<c027088c>] (hub_thread+0x31c/0x10d4)
[87991.606580] [<c027088c>] (hub_thread+0x31c/0x10d4) from [<c003a7ec>] (kthread+0x88/0x94)
[87991.606621] [<c003a7ec>] (kthread+0x88/0x94) from [<c000e9fc>] (kernel_thread_exit+0x0/0x8)
[87991.606649] ---[ end trace 33ac63bf6371b35e ]---
[87991.844666] usb 1-1.3.2: new high-speed USB device number 13 using dwc_otg
[87991.946828] usb 1-1.3.2: New USB device found, idVendor=7392, idProduct=7811
[87991.946857] usb 1-1.3.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[87991.946874] usb 1-1.3.2: Product: 802.11n WLAN Adapter
[87991.946887] usb 1-1.3.2: Manufacturer: Realtek
[87991.946899] usb 1-1.3.2: SerialNumber: 00e04c000001
[88747.636596] usb 1-1.3.2: USB disconnect, device number 13
[88747.908254] ------------[ cut here ]------------
[88747.908350] WARNING: at fs/proc/generic.c:849 remove_proc_entry+0x280/0x2a0()
[88747.908382] remove_proc_entry: removing non-empty directory 'rtl819xC/wlan0', leaking at least 'ampdu_enable'
[88747.908394] Modules linked in: rfcomm bnep binfmt_misc snd_bcm2835 snd_pcm snd_page_alloc snd_seq snd_seq_device snd_timer snd btusb bluetooth evdev rfkill joydev 8192cu leds_gpio led_class
[88747.908503] [<c0013a7c>] (unwind_backtrace+0x0/0xf0) from [<c001e2ec>] (warn_slowpath_common+0x4c/0x64)
[88747.908547] [<c001e2ec>] (warn_slowpath_common+0x4c/0x64) from [<c001e398>] (warn_slowpath_fmt+0x30/0x40)
[88747.908580] [<c001e398>] (warn_slowpath_fmt+0x30/0x40) from [<c0118264>] (remove_proc_entry+0x280/0x2a0)
[88747.909036] [<c0118264>] (remove_proc_entry+0x280/0x2a0) from [<bf044748>] (rtw_proc_remove_one+0xf4/0x188 [8192cu])
[88747.909653] [<bf044748>] (rtw_proc_remove_one+0xf4/0x188 [8192cu]) from [<bf0456bc>] (rtw_dev_remove+0x94/0x134 [8192cu])
[88747.910016] [<bf0456bc>] (rtw_dev_remove+0x94/0x134 [8192cu]) from [<c0278054>] (usb_unbind_interface+0x48/0x108)
[88747.910095] [<c0278054>] (usb_unbind_interface+0x48/0x108) from [<c0237670>] (__device_release_driver+0x58/0xb0)
[88747.910142] [<c0237670>] (__device_release_driver+0x58/0xb0) from [<c02376e4>] (device_release_driver+0x1c/0x28)
[88747.910167] [<c02376e4>] (device_release_driver+0x1c/0x28) from [<c02371ec>] (bus_remove_device+0xc4/0xe4)
[88747.910202] [<c02371ec>] (bus_remove_device+0xc4/0xe4) from [<c023538c>] (device_del+0xf8/0x17c)
[88747.910229] [<c023538c>] (device_del+0xf8/0x17c) from [<c0276730>] (usb_disable_device+0xa0/0x1c8)
[88747.910271] [<c0276730>] (usb_disable_device+0xa0/0x1c8) from [<c026f9d0>] (usb_disconnect+0x7c/0x124)
[88747.910323] [<c026f9d0>] (usb_disconnect+0x7c/0x124) from [<c027088c>] (hub_thread+0x31c/0x10d4)
[88747.910365] [<c027088c>] (hub_thread+0x31c/0x10d4) from [<c003a7ec>] (kthread+0x88/0x94)
[88747.910417] [<c003a7ec>] (kthread+0x88/0x94) from [<c000e9fc>] (kernel_thread_exit+0x0/0x8)
[88747.910433] ---[ end trace 33ac63bf6371b35f ]---
[88748.158439] usb 1-1.3.2: new high-speed USB device number 14 using dwc_otg
[88748.260587] usb 1-1.3.2: New USB device found, idVendor=7392, idProduct=7811
[88748.260619] usb 1-1.3.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[88748.260636] usb 1-1.3.2: Product: 802.11n WLAN Adapter
[88748.260649] usb 1-1.3.2: Manufacturer: Realtek
[88748.260665] usb 1-1.3.2: SerialNumber: 00e04c000001
[88841.601115] usb 1-1.3.2: USB disconnect, device number 14
[88841.622867] ------------[ cut here ]------------
[88841.622938] WARNING: at fs/proc/generic.c:849 remove_proc_entry+0x280/0x2a0()
[88841.622953] remove_proc_entry: removing non-empty directory 'rtl819xC/wlan0', leaking at least 'ampdu_enable'
[88841.622962] Modules linked in: rfcomm bnep binfmt_misc snd_bcm2835 snd_pcm snd_page_alloc snd_seq snd_seq_device snd_timer snd btusb bluetooth evdev rfkill joydev 8192cu leds_gpio led_class
[88841.623104] [<c0013a7c>] (unwind_backtrace+0x0/0xf0) from [<c001e2ec>] (warn_slowpath_common+0x4c/0x64)
[88841.623153] [<c001e2ec>] (warn_slowpath_common+0x4c/0x64) from [<c001e398>] (warn_slowpath_fmt+0x30/0x40)
[88841.623187] [<c001e398>] (warn_slowpath_fmt+0x30/0x40) from [<c0118264>] (remove_proc_entry+0x280/0x2a0)
[88841.623648] [<c0118264>] (remove_proc_entry+0x280/0x2a0) from [<bf044748>] (rtw_proc_remove_one+0xf4/0x188 [8192cu])
[88841.624275] [<bf044748>] (rtw_proc_remove_one+0xf4/0x188 [8192cu]) from [<bf0456bc>] (rtw_dev_remove+0x94/0x134 [8192cu])
[88841.624634] [<bf0456bc>] (rtw_dev_remove+0x94/0x134 [8192cu]) from [<c0278054>] (usb_unbind_interface+0x48/0x108)
[88841.624698] [<c0278054>] (usb_unbind_interface+0x48/0x108) from [<c0237670>] (__device_release_driver+0x58/0xb0)
[88841.624728] [<c0237670>] (__device_release_driver+0x58/0xb0) from [<c02376e4>] (device_release_driver+0x1c/0x28)
[88841.624768] [<c02376e4>] (device_release_driver+0x1c/0x28) from [<c02371ec>] (bus_remove_device+0xc4/0xe4)
[88841.624805] [<c02371ec>] (bus_remove_device+0xc4/0xe4) from [<c023538c>] (device_del+0xf8/0x17c)
[88841.624831] [<c023538c>] (device_del+0xf8/0x17c) from [<c0276730>] (usb_disable_device+0xa0/0x1c8)
[88841.624912] [<c0276730>] (usb_disable_device+0xa0/0x1c8) from [<c026f9d0>] (usb_disconnect+0x7c/0x124)
[88841.624945] [<c026f9d0>] (usb_disconnect+0x7c/0x124) from [<c027088c>] (hub_thread+0x31c/0x10d4)
[88841.624986] [<c027088c>] (hub_thread+0x31c/0x10d4) from [<c003a7ec>] (kthread+0x88/0x94)
[88841.625041] [<c003a7ec>] (kthread+0x88/0x94) from [<c000e9fc>] (kernel_thread_exit+0x0/0x8)
[88841.625057] ---[ end trace 33ac63bf6371b360 ]---
[88841.872579] usb 1-1.3.2: new high-speed USB device number 15 using dwc_otg
[88841.974721] usb 1-1.3.2: New USB device found, idVendor=7392, idProduct=7811
[88841.974752] usb 1-1.3.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[88841.974815] usb 1-1.3.2: Product: 802.11n WLAN Adapter
[88841.974835] usb 1-1.3.2: Manufacturer: Realtek
[88841.974851] usb 1-1.3.2: SerialNumber: 00e04c000001
[88912.778788] usb 1-1.3.2: USB disconnect, device number 15
[88912.795637] ------------[ cut here ]------------
[88912.795727] WARNING: at fs/proc/generic.c:849 remove_proc_entry+0x280/0x2a0()
[88912.795744] remove_proc_entry: removing non-empty directory 'rtl819xC/wlan0', leaking at least 'ampdu_enable'
[88912.795754] Modules linked in: rfcomm bnep binfmt_misc snd_bcm2835 snd_pcm snd_page_alloc snd_seq snd_seq_device snd_timer snd btusb bluetooth evdev rfkill joydev 8192cu leds_gpio led_class
[88912.795879] [<c0013a7c>] (unwind_backtrace+0x0/0xf0) from [<c001e2ec>] (warn_slowpath_common+0x4c/0x64)
[88912.795929] [<c001e2ec>] (warn_slowpath_common+0x4c/0x64) from [<c001e398>] (warn_slowpath_fmt+0x30/0x40)
[88912.795961] [<c001e398>] (warn_slowpath_fmt+0x30/0x40) from [<c0118264>] (remove_proc_entry+0x280/0x2a0)
[88912.796424] [<c0118264>] (remove_proc_entry+0x280/0x2a0) from [<bf044748>] (rtw_proc_remove_one+0xf4/0x188 [8192cu])
[88912.797049] [<bf044748>] (rtw_proc_remove_one+0xf4/0x188 [8192cu]) from [<bf0456bc>] (rtw_dev_remove+0x94/0x134 [8192cu])
[88912.797426] [<bf0456bc>] (rtw_dev_remove+0x94/0x134 [8192cu]) from [<c0278054>] (usb_unbind_interface+0x48/0x108)
[88912.797510] [<c0278054>] (usb_unbind_interface+0x48/0x108) from [<c0237670>] (__device_release_driver+0x58/0xb0)
[88912.797557] [<c0237670>] (__device_release_driver+0x58/0xb0) from [<c02376e4>] (device_release_driver+0x1c/0x28)
[88912.797583] [<c02376e4>] (device_release_driver+0x1c/0x28) from [<c02371ec>] (bus_remove_device+0xc4/0xe4)
[88912.797618] [<c02371ec>] (bus_remove_device+0xc4/0xe4) from [<c023538c>] (device_del+0xf8/0x17c)
[88912.797648] [<c023538c>] (device_del+0xf8/0x17c) from [<c0276730>] (usb_disable_device+0xa0/0x1c8)
[88912.797709] [<c0276730>] (usb_disable_device+0xa0/0x1c8) from [<c026f9d0>] (usb_disconnect+0x7c/0x124)
[88912.797740] [<c026f9d0>] (usb_disconnect+0x7c/0x124) from [<c027088c>] (hub_thread+0x31c/0x10d4)
[88912.797781] [<c027088c>] (hub_thread+0x31c/0x10d4) from [<c003a7ec>] (kthread+0x88/0x94)
[88912.797834] [<c003a7ec>] (kthread+0x88/0x94) from [<c000e9fc>] (kernel_thread_exit+0x0/0x8)
[88912.797850] ---[ end trace 33ac63bf6371b361 ]---
[88915.825858] usb 1-1.3.2: new high-speed USB device number 16 using dwc_otg
[88915.927998] usb 1-1.3.2: New USB device found, idVendor=7392, idProduct=7811
[88915.928027] usb 1-1.3.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[88915.928043] usb 1-1.3.2: Product: 802.11n WLAN Adapter
[88915.928057] usb 1-1.3.2: Manufacturer: Realtek
[88915.928076] usb 1-1.3.2: SerialNumber: 00e04c000001

[jackokring]

Power cycling the WiFi dongle has made the errors go away. (hopefully permanent). This is perhaps a powered USB hub, device reset issue. The sudo reboot after the rpi-update does not fully reinitialize the USB devices?

[jackokring]

No problems since power cycling the WiFi dongle. I close.

[MrEngman]

This occurs all the time when I unplug a wifi adaptor, whether plugged into a hub or directly into the Pi's USB ports