Em Tue, 6 Dec 2016 01:06:17 +0200 Antti Palosaari <crope@xxxxxx> escreveu: > Hello Mauro > I just noticed current em28xx driver seem to be broken. When I plug > device first time it loads correctly, but when I re-plug it, it does not > work anymore but yells a lot of noise to message log. Tested with PCTV > 290e and 292e both same. Other USB DVB devices are working so it is very > likely em28xx driver bug. > > Easy to reproduce: > plug device > unplug device > plug device Are you referring to those: [ 1010.310320] WARNING: CPU: 3 PID: 119 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x7b/0x90 [ 1010.310323] sysfs: cannot create duplicate filename '/bus/usb/devices/1-3.3' [ 1010.310325] Modules linked in: lgdt330x em28xx_dvb dvb_core em28xx_alsa tuner_xc2028 tuner tvp5150 em28xx_v4l videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core em28xx tveeprom v4l2_common videodev media xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp tun bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ip_tables x_tables cmac bnep cpufreq_powersave cpufreq_conservative cpufreq_userspace binfmt_misc parport_pc ppdev lp parport snd_hda_codec_hdmi iTCO_wdt snd_hda_codec_realtek iTCO_vendor_support snd_hda_codec_generic arc4 intel_rapl x86_pkg_temp_thermal iwlmvm intel_powerclamp coretemp kvm_intel mac80211 kvm i915 [ 1010.310383] irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel iwlwifi pl2303 aesni_intel btusb aes_x86_64 usbserial lrw btrtl gf128mul glue_helper btbcm ablk_helper cryptd btintel bluetooth drm_kms_helper cfg80211 drm psmouse pcspkr i2c_i801 e1000e serio_raw snd_hda_intel snd_soc_rt5640 snd_hda_codec snd_soc_rl6231 snd_soc_ssm4567 mei_me i2c_smbus rfkill snd_hda_core ptp mei snd_soc_core ehci_pci sg lpc_ich shpchp mfd_core ehci_hcd pps_core snd_hwdep i2c_algo_bit snd_compress snd_pcm sdhci_acpi snd_timer battery snd sdhci elan_i2c snd_soc_sst_acpi mmc_core fjes dw_dmac i2c_hid soundcore snd_soc_sst_match i2c_designware_platform video i2c_designware_core acpi_pad acpi_als kfifo_buf tpm_tis button industrialio tpm_tis_core tpm ext4 crc16 jbd2 fscrypto mbcache dm_mod joydev evdev hid_logitech_hidpp [ 1010.310449] sd_mod hid_logitech_dj usbhid hid ahci libahci crc32c_intel libata xhci_pci xhci_hcd scsi_mod usbcore fan thermal [ 1010.310464] CPU: 3 PID: 119 Comm: kworker/3:2 Not tainted 4.9.0-rc8+ #14 [ 1010.310466] Hardware name: /NUC5i7RYB, BIOS RYBDWi35.86A.0350.2015.0812.1722 08/12/2015 [ 1010.310487] Workqueue: usb_hub_wq hub_event [usbcore] [ 1010.310490] 0000000000000000 ffffffff848f56c5 ffff8803b1f7f858 0000000000000000 [ 1010.310496] ffffffff8414f8f8 ffff88030000001f ffffed00763eff07 ffff8803b1f7f8f0 [ 1010.310501] ffff8803b3ea1e60 0000000000000001 ffffffffffffffef ffff8803b45c6840 [ 1010.310505] Call Trace: [ 1010.310517] [<ffffffff848f56c5>] ? dump_stack+0x5c/0x77 [ 1010.310522] [<ffffffff8414f8f8>] ? __warn+0x168/0x1a0 [ 1010.310526] [<ffffffff8414f9e4>] ? warn_slowpath_fmt+0xb4/0xf0 [ 1010.310529] [<ffffffff8414f930>] ? __warn+0x1a0/0x1a0 [ 1010.310534] [<ffffffff845436c6>] ? kasan_kmalloc+0xa6/0xd0 [ 1010.310539] [<ffffffff846ec2fa>] ? kernfs_path_from_node+0x4a/0x60 [ 1010.310543] [<ffffffff846f66eb>] ? sysfs_warn_dup+0x7b/0x90 [ 1010.310547] [<ffffffff846f6f26>] ? sysfs_do_create_link_sd.isra.2+0xb6/0xd0 [ 1010.310553] [<ffffffff84cd5a08>] ? bus_add_device+0x318/0x6b0 [ 1010.310557] [<ffffffff846f8693>] ? sysfs_create_groups+0x83/0x110 [ 1010.310562] [<ffffffff84ccff87>] ? device_add+0x777/0x1350 [ 1010.310567] [<ffffffff84ccf810>] ? device_private_init+0x180/0x180 [ 1010.310583] [<ffffffffc00c0f77>] ? usb_new_device+0x707/0x1030 [usbcore] [ 1010.310598] [<ffffffffc00c58c5>] ? hub_event+0x1d65/0x3280 [usbcore] [ 1010.310604] [<ffffffff841eb4ab>] ? account_entity_dequeue+0x30b/0x4a0 [ 1010.310618] [<ffffffffc00c3b60>] ? hub_port_debounce+0x280/0x280 [usbcore] [ 1010.310624] [<ffffffff8407ccd0>] ? compat_start_thread+0x80/0x80 [ 1010.310629] [<ffffffff851f5cb4>] ? __schedule+0x704/0x1770 [ 1010.310633] [<ffffffff851f55b0>] ? io_schedule_timeout+0x390/0x390 [ 1010.310638] [<ffffffff84541783>] ? cache_reap+0x173/0x200 [ 1010.310642] [<ffffffff84197bed>] ? process_one_work+0x4ed/0xe60 [ 1010.310646] [<ffffffff84198642>] ? worker_thread+0xe2/0xfd0 [ 1010.310650] [<ffffffff8421f76c>] ? __wake_up_common+0xbc/0x160 [ 1010.310654] [<ffffffff84198560>] ? process_one_work+0xe60/0xe60 [ 1010.310658] [<ffffffff841a837c>] ? kthread+0x1cc/0x220 [ 1010.310663] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80 [ 1010.310667] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80 [ 1010.310671] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80 [ 1010.310675] [<ffffffff852016f5>] ? ret_from_fork+0x25/0x30 [ 1010.310698] ---[ end trace 49b46eb633ff1197 ]--- [ 1010.311298] usb 1-3.3: can't device_add, error -17 [ 1010.390703] usb 1-3.3: new high-speed USB device number 9 using xhci_hcd [ 1010.496337] usb 1-3.3: New USB device found, idVendor=2040, idProduct=6513 [ 1010.496343] usb 1-3.3: New USB device strings: Mfr=0, Product=1, SerialNumber=2 [ 1010.496345] usb 1-3.3: Product: WinTV HVR-980 [ 1010.496347] usb 1-3.3: SerialNumber: 4028449018 [ 1010.497259] ------------[ cut here ]------------ [ 1010.497264] WARNING: CPU: 3 PID: 119 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x7b/0x90 [ 1010.497266] sysfs: cannot create duplicate filename '/bus/usb/devices/1-3.3' [ 1010.497267] Modules linked in: lgdt330x em28xx_dvb dvb_core em28xx_alsa tuner_xc2028 tuner tvp5150 em28xx_v4l videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core em28xx tveeprom v4l2_common videodev media xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp tun bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ip_tables x_tables cmac bnep cpufreq_powersave cpufreq_conservative cpufreq_userspace binfmt_misc parport_pc ppdev lp parport snd_hda_codec_hdmi iTCO_wdt snd_hda_codec_realtek iTCO_vendor_support snd_hda_codec_generic arc4 intel_rapl x86_pkg_temp_thermal iwlmvm intel_powerclamp coretemp kvm_intel mac80211 kvm i915 [ 1010.497307] irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel iwlwifi pl2303 aesni_intel btusb aes_x86_64 usbserial lrw btrtl gf128mul glue_helper btbcm ablk_helper cryptd btintel bluetooth drm_kms_helper cfg80211 drm psmouse pcspkr i2c_i801 e1000e serio_raw snd_hda_intel snd_soc_rt5640 snd_hda_codec snd_soc_rl6231 snd_soc_ssm4567 mei_me i2c_smbus rfkill snd_hda_core ptp mei snd_soc_core ehci_pci sg lpc_ich shpchp mfd_core ehci_hcd pps_core snd_hwdep i2c_algo_bit snd_compress snd_pcm sdhci_acpi snd_timer battery snd sdhci elan_i2c snd_soc_sst_acpi mmc_core fjes dw_dmac i2c_hid soundcore snd_soc_sst_match i2c_designware_platform video i2c_designware_core acpi_pad acpi_als kfifo_buf tpm_tis button industrialio tpm_tis_core tpm ext4 crc16 jbd2 fscrypto mbcache dm_mod joydev evdev hid_logitech_hidpp [ 1010.497352] sd_mod hid_logitech_dj usbhid hid ahci libahci crc32c_intel libata xhci_pci xhci_hcd scsi_mod usbcore fan thermal [ 1010.497362] CPU: 3 PID: 119 Comm: kworker/3:2 Tainted: G W 4.9.0-rc8+ #14 [ 1010.497363] Hardware name: /NUC5i7RYB, BIOS RYBDWi35.86A.0350.2015.0812.1722 08/12/2015 [ 1010.497377] Workqueue: usb_hub_wq hub_event [usbcore] [ 1010.497379] 0000000000000000 ffffffff848f56c5 ffff8803b1f7f858 0000000000000000 [ 1010.497382] ffffffff8414f8f8 ffff88030000001f ffffed00763eff07 ffff8803b1f7f8f0 [ 1010.497385] ffff8803b3ea1e60 0000000000000001 ffffffffffffffef ffff8803b45c6840 [ 1010.497387] Call Trace: [ 1010.497395] [<ffffffff848f56c5>] ? dump_stack+0x5c/0x77 [ 1010.497398] [<ffffffff8414f8f8>] ? __warn+0x168/0x1a0 [ 1010.497400] [<ffffffff8414f9e4>] ? warn_slowpath_fmt+0xb4/0xf0 [ 1010.497402] [<ffffffff8414f930>] ? __warn+0x1a0/0x1a0 [ 1010.497405] [<ffffffff845436c6>] ? kasan_kmalloc+0xa6/0xd0 [ 1010.497408] [<ffffffff846ec2fa>] ? kernfs_path_from_node+0x4a/0x60 [ 1010.497410] [<ffffffff846f66eb>] ? sysfs_warn_dup+0x7b/0x90 [ 1010.497412] [<ffffffff846f6f26>] ? sysfs_do_create_link_sd.isra.2+0xb6/0xd0 [ 1010.497416] [<ffffffff84cd5a08>] ? bus_add_device+0x318/0x6b0 [ 1010.497419] [<ffffffff846f8693>] ? sysfs_create_groups+0x83/0x110 [ 1010.497421] [<ffffffff84ccff87>] ? device_add+0x777/0x1350 [ 1010.497424] [<ffffffff84ccf810>] ? device_private_init+0x180/0x180 [ 1010.497433] [<ffffffffc00c0f77>] ? usb_new_device+0x707/0x1030 [usbcore] [ 1010.497441] [<ffffffffc00c58c5>] ? hub_event+0x1d65/0x3280 [usbcore] [ 1010.497445] [<ffffffff841eb4ab>] ? account_entity_dequeue+0x30b/0x4a0 [ 1010.497454] [<ffffffffc00c3b60>] ? hub_port_debounce+0x280/0x280 [usbcore] [ 1010.497457] [<ffffffff8407ccd0>] ? compat_start_thread+0x80/0x80 [ 1010.497460] [<ffffffff851f5cb4>] ? __schedule+0x704/0x1770 [ 1010.497462] [<ffffffff851f55b0>] ? io_schedule_timeout+0x390/0x390 [ 1010.497465] [<ffffffff84541783>] ? cache_reap+0x173/0x200 [ 1010.497468] [<ffffffff84197bed>] ? process_one_work+0x4ed/0xe60 [ 1010.497470] [<ffffffff84198642>] ? worker_thread+0xe2/0xfd0 [ 1010.497473] [<ffffffff8421f76c>] ? __wake_up_common+0xbc/0x160 [ 1010.497475] [<ffffffff84198560>] ? process_one_work+0xe60/0xe60 [ 1010.497477] [<ffffffff841a837c>] ? kthread+0x1cc/0x220 [ 1010.497480] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80 [ 1010.497482] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80 [ 1010.497485] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80 [ 1010.497487] [<ffffffff852016f5>] ? ret_from_fork+0x25/0x30 [ 1010.497489] ---[ end trace 49b46eb633ff1198 ]--- [ 1010.497829] usb 1-3.3: can't device_add, error -17 [ 1010.578707] usb 1-3.3: new high-speed USB device number 10 using xhci_hcd [ 1010.604448] usb 1-3.3: New USB device found, idVendor=2040, idProduct=6513 [ 1010.604452] usb 1-3.3: New USB device strings: Mfr=0, Product=1, SerialNumber=2 [ 1010.604454] usb 1-3.3: Product: WinTV HVR-980 [ 1010.604456] usb 1-3.3: SerialNumber: 4028449018 [ 1010.605369] ------------[ cut here ]------------ [ 1010.605374] WARNING: CPU: 3 PID: 119 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x7b/0x90 [ 1010.605375] sysfs: cannot create duplicate filename '/bus/usb/devices/1-3.3' [ 1010.605376] Modules linked in: lgdt330x em28xx_dvb dvb_core em28xx_alsa tuner_xc2028 tuner tvp5150 em28xx_v4l videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core em28xx tveeprom v4l2_common videodev media xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp tun bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ip_tables x_tables cmac bnep cpufreq_powersave cpufreq_conservative cpufreq_userspace binfmt_misc parport_pc ppdev lp parport snd_hda_codec_hdmi iTCO_wdt snd_hda_codec_realtek iTCO_vendor_support snd_hda_codec_generic arc4 intel_rapl x86_pkg_temp_thermal iwlmvm intel_powerclamp coretemp kvm_intel mac80211 kvm i915 [ 1010.605415] irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel iwlwifi pl2303 aesni_intel btusb aes_x86_64 usbserial lrw btrtl gf128mul glue_helper btbcm ablk_helper cryptd btintel bluetooth drm_kms_helper cfg80211 drm psmouse pcspkr i2c_i801 e1000e serio_raw snd_hda_intel snd_soc_rt5640 snd_hda_codec snd_soc_rl6231 snd_soc_ssm4567 mei_me i2c_smbus rfkill snd_hda_core ptp mei snd_soc_core ehci_pci sg lpc_ich shpchp mfd_core ehci_hcd pps_core snd_hwdep i2c_algo_bit snd_compress snd_pcm sdhci_acpi snd_timer battery snd sdhci elan_i2c snd_soc_sst_acpi mmc_core fjes dw_dmac i2c_hid soundcore snd_soc_sst_match i2c_designware_platform video i2c_designware_core acpi_pad acpi_als kfifo_buf tpm_tis button industrialio tpm_tis_core tpm ext4 crc16 jbd2 fscrypto mbcache dm_mod joydev evdev hid_logitech_hidpp [ 1010.605459] sd_mod hid_logitech_dj usbhid hid ahci libahci crc32c_intel libata xhci_pci xhci_hcd scsi_mod usbcore fan thermal [ 1010.605469] CPU: 3 PID: 119 Comm: kworker/3:2 Tainted: G W 4.9.0-rc8+ #14 [ 1010.605471] Hardware name: /NUC5i7RYB, BIOS RYBDWi35.86A.0350.2015.0812.1722 08/12/2015 [ 1010.605484] Workqueue: usb_hub_wq hub_event [usbcore] [ 1010.605486] 0000000000000000 ffffffff848f56c5 ffff8803b1f7f858 0000000000000000 [ 1010.605490] ffffffff8414f8f8 ffff88030000001f ffffed00763eff07 ffff8803b1f7f8f0 [ 1010.605492] ffff8803b3ea1e60 0000000000000001 ffffffffffffffef ffff8803b45c6840 [ 1010.605495] Call Trace: [ 1010.605502] [<ffffffff848f56c5>] ? dump_stack+0x5c/0x77 [ 1010.605505] [<ffffffff8414f8f8>] ? __warn+0x168/0x1a0 [ 1010.605508] [<ffffffff8414f9e4>] ? warn_slowpath_fmt+0xb4/0xf0 [ 1010.605510] [<ffffffff8414f930>] ? __warn+0x1a0/0x1a0 [ 1010.605513] [<ffffffff845436c6>] ? kasan_kmalloc+0xa6/0xd0 [ 1010.605516] [<ffffffff846ec2fa>] ? kernfs_path_from_node+0x4a/0x60 [ 1010.605518] [<ffffffff846f66eb>] ? sysfs_warn_dup+0x7b/0x90 [ 1010.605520] [<ffffffff846f6f26>] ? sysfs_do_create_link_sd.isra.2+0xb6/0xd0 [ 1010.605524] [<ffffffff84cd5a08>] ? bus_add_device+0x318/0x6b0 [ 1010.605527] [<ffffffff846f8693>] ? sysfs_create_groups+0x83/0x110 [ 1010.605529] [<ffffffff84ccff87>] ? device_add+0x777/0x1350 [ 1010.605532] [<ffffffff84ccf810>] ? device_private_init+0x180/0x180 [ 1010.605542] [<ffffffffc00c0f77>] ? usb_new_device+0x707/0x1030 [usbcore] [ 1010.605550] [<ffffffffc00c58c5>] ? hub_event+0x1d65/0x3280 [usbcore] [ 1010.605554] [<ffffffff841eb4ab>] ? account_entity_dequeue+0x30b/0x4a0 [ 1010.605563] [<ffffffffc00c3b60>] ? hub_port_debounce+0x280/0x280 [usbcore] [ 1010.605566] [<ffffffff8407ccd0>] ? compat_start_thread+0x80/0x80 [ 1010.605569] [<ffffffff851f5cb4>] ? __schedule+0x704/0x1770 [ 1010.605572] [<ffffffff851f55b0>] ? io_schedule_timeout+0x390/0x390 [ 1010.605574] [<ffffffff84541783>] ? cache_reap+0x173/0x200 [ 1010.605577] [<ffffffff84197bed>] ? process_one_work+0x4ed/0xe60 [ 1010.605579] [<ffffffff84198642>] ? worker_thread+0xe2/0xfd0 [ 1010.605581] [<ffffffff8421f76c>] ? __wake_up_common+0xbc/0x160 [ 1010.605584] [<ffffffff84198560>] ? process_one_work+0xe60/0xe60 [ 1010.605586] [<ffffffff841a837c>] ? kthread+0x1cc/0x220 [ 1010.605589] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80 [ 1010.605591] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80 [ 1010.605594] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80 [ 1010.605596] [<ffffffff852016f5>] ? ret_from_fork+0x25/0x30 [ 1010.605598] ---[ end trace 49b46eb633ff1199 ]--- [ 1010.605948] usb 1-3.3: can't device_add, error -17 [ 1010.686729] usb 1-3.3: new high-speed USB device number 11 using xhci_hcd [ 1010.712761] usb 1-3.3: New USB device found, idVendor=2040, idProduct=6513 [ 1010.712768] usb 1-3.3: New USB device strings: Mfr=0, Product=1, SerialNumber=2 [ 1010.712772] usb 1-3.3: Product: WinTV HVR-980 [ 1010.712775] usb 1-3.3: SerialNumber: 4028449018 [ 1010.714339] ------------[ cut here ]------------ [ 1010.714347] WARNING: CPU: 3 PID: 119 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x7b/0x90 [ 1010.714349] sysfs: cannot create duplicate filename '/bus/usb/devices/1-3.3' [ 1010.714351] Modules linked in: lgdt330x em28xx_dvb dvb_core em28xx_alsa tuner_xc2028 tuner tvp5150 em28xx_v4l videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core em28xx tveeprom v4l2_common videodev media xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp tun bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ip_tables x_tables cmac bnep cpufreq_powersave cpufreq_conservative cpufreq_userspace binfmt_misc parport_pc ppdev lp parport snd_hda_codec_hdmi iTCO_wdt snd_hda_codec_realtek iTCO_vendor_support snd_hda_codec_generic arc4 intel_rapl x86_pkg_temp_thermal iwlmvm intel_powerclamp coretemp kvm_intel mac80211 kvm i915 [ 1010.714409] irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel iwlwifi pl2303 aesni_intel btusb aes_x86_64 usbserial lrw btrtl gf128mul glue_helper btbcm ablk_helper cryptd btintel bluetooth drm_kms_helper cfg80211 drm psmouse pcspkr i2c_i801 e1000e serio_raw snd_hda_intel snd_soc_rt5640 snd_hda_codec snd_soc_rl6231 snd_soc_ssm4567 mei_me i2c_smbus rfkill snd_hda_core ptp mei snd_soc_core ehci_pci sg lpc_ich shpchp mfd_core ehci_hcd pps_core snd_hwdep i2c_algo_bit snd_compress snd_pcm sdhci_acpi snd_timer battery snd sdhci elan_i2c snd_soc_sst_acpi mmc_core fjes dw_dmac i2c_hid soundcore snd_soc_sst_match i2c_designware_platform video i2c_designware_core acpi_pad acpi_als kfifo_buf tpm_tis button industrialio tpm_tis_core tpm ext4 crc16 jbd2 fscrypto mbcache dm_mod joydev evdev hid_logitech_hidpp [ 1010.714475] sd_mod hid_logitech_dj usbhid hid ahci libahci crc32c_intel libata xhci_pci xhci_hcd scsi_mod usbcore fan thermal [ 1010.714490] CPU: 3 PID: 119 Comm: kworker/3:2 Tainted: G W 4.9.0-rc8+ #14 [ 1010.714493] Hardware name: /NUC5i7RYB, BIOS RYBDWi35.86A.0350.2015.0812.1722 08/12/2015 [ 1010.714513] Workqueue: usb_hub_wq hub_event [usbcore] [ 1010.714517] 0000000000000000 ffffffff848f56c5 ffff8803b1f7f858 0000000000000000 [ 1010.714522] ffffffff8414f8f8 ffff88030000001f ffffed00763eff07 ffff8803b1f7f8f0 [ 1010.714527] ffff8803b3ea1e60 0000000000000001 ffffffffffffffef ffff8803b45c6840 [ 1010.714532] Call Trace: [ 1010.714543] [<ffffffff848f56c5>] ? dump_stack+0x5c/0x77 [ 1010.714547] [<ffffffff8414f8f8>] ? __warn+0x168/0x1a0 [ 1010.714551] [<ffffffff8414f9e4>] ? warn_slowpath_fmt+0xb4/0xf0 [ 1010.714555] [<ffffffff8414f930>] ? __warn+0x1a0/0x1a0 [ 1010.714560] [<ffffffff845436c6>] ? kasan_kmalloc+0xa6/0xd0 [ 1010.714565] [<ffffffff846ec2fa>] ? kernfs_path_from_node+0x4a/0x60 [ 1010.714568] [<ffffffff846f66eb>] ? sysfs_warn_dup+0x7b/0x90 [ 1010.714573] [<ffffffff846f6f26>] ? sysfs_do_create_link_sd.isra.2+0xb6/0xd0 [ 1010.714579] [<ffffffff84cd5a08>] ? bus_add_device+0x318/0x6b0 [ 1010.714583] [<ffffffff846f8693>] ? sysfs_create_groups+0x83/0x110 [ 1010.714587] [<ffffffff84ccff87>] ? device_add+0x777/0x1350 [ 1010.714592] [<ffffffff84ccf810>] ? device_private_init+0x180/0x180 [ 1010.714608] [<ffffffffc00c0f77>] ? usb_new_device+0x707/0x1030 [usbcore] [ 1010.714623] [<ffffffffc00c58c5>] ? hub_event+0x1d65/0x3280 [usbcore] [ 1010.714628] [<ffffffff841eb4ab>] ? account_entity_dequeue+0x30b/0x4a0 [ 1010.714643] [<ffffffffc00c3b60>] ? hub_port_debounce+0x280/0x280 [usbcore] [ 1010.714648] [<ffffffff8407ccd0>] ? compat_start_thread+0x80/0x80 [ 1010.714653] [<ffffffff851f5cb4>] ? __schedule+0x704/0x1770 [ 1010.714657] [<ffffffff851f55b0>] ? io_schedule_timeout+0x390/0x390 [ 1010.714661] [<ffffffff84541783>] ? cache_reap+0x173/0x200 [ 1010.714666] [<ffffffff84197bed>] ? process_one_work+0x4ed/0xe60 [ 1010.714670] [<ffffffff84198642>] ? worker_thread+0xe2/0xfd0 [ 1010.714674] [<ffffffff8421f76c>] ? __wake_up_common+0xbc/0x160 [ 1010.714678] [<ffffffff84198560>] ? process_one_work+0xe60/0xe60 [ 1010.714682] [<ffffffff841a837c>] ? kthread+0x1cc/0x220 [ 1010.714686] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80 [ 1010.714691] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80 [ 1010.714695] [<ffffffff841a81b0>] ? kthread_park+0x80/0x80 [ 1010.714699] [<ffffffff852016f5>] ? ret_from_fork+0x25/0x30 [ 1010.714719] ---[ end trace 49b46eb633ff119a ]--- [ 1010.715706] usb 1-3.3: can't device_add, error -17 [ 1010.716223] usb 1-3-port3: unable to enumerate USB device If so, it seems that the device was not properly unregistered. That's weird, since everything sounded ok at device unregister: [ 999.740335] usb 1-3.3: em2882!3#0: USB disconnect, device number 7 [ 999.742857] usb 1-3.3: em2882!3#0: Disconnecting [ 999.742874] usb 1-3.3: em2882!3#0: Closing video extension [ 999.743058] usb 1-3.3: em2882!3#0: V4L2 device vbi0 deregistered [ 999.744327] usb 1-3.3: em2882!3#0: V4L2 device video0 deregistered [ 999.747938] tvp5150 6-005c: tvp5150.c: removing tvp5150 adapter on address 0xb8 [ 999.750085] xc2028 6-0061: xc2028_dvb_release called [ 999.750852] usb 1-3.3: em2882!3#0: Closing audio extension [ 999.754253] usb 1-3.3: em2882!3#0: Closing DVB extension [ 999.760360] xc2028 6-0061: xc2028_dvb_release called [ 999.760362] xc2028 6-0061: free_firmware called [ 999.760958] xc2028 6-0061: destroying instance I'll try to bisect this. Regards, Mauro Thanks, Mauro -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
