Hey
When i disconnect my nRF5340-DK devkit to my Lenovo T14s Gen 2 running Ubuntu 20.04.3 LTS the usb driver in the linux kernel crashes.
I think it's a problem that have occurred after i have installed updates to ubuntu. But when it started happening i dont know.
When i look at dmesg i get the following errors when disconnecting the board:
[ 31.530202] usb 3-7: new full-speed USB device number 6 using xhci_hcd[ 31.680972] usb 3-7: New USB device found, idVendor=1366, idProduct=1055, bcdDevice= 1.00[ 31.680979] usb 3-7: New USB device strings: Mfr=1, Product=2, SerialNumber=3[ 31.680980] usb 3-7: Product: J-Link[ 31.680982] usb 3-7: Manufacturer: SEGGER[ 31.680983] usb 3-7: SerialNumber: 000960144976[ 32.229387] cdc_acm 3-7:1.0: ttyACM0: USB ACM device[ 32.229744] cdc_acm 3-7:1.2: ttyACM1: USB ACM device[ 32.229995] cdc_acm 3-7:1.4: ttyACM2: USB ACM device[ 32.230047] usbcore: registered new interface driver cdc_acm[ 32.230048] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters[ 32.235853] usb-storage 3-7:1.7: USB Mass Storage device detected[ 32.235961] scsi host0: usb-storage 3-7:1.7[ 32.236041] usbcore: registered new interface driver usb-storage[ 32.237626] usbcore: registered new interface driver uas[ 33.247375] scsi 0:0:0:0: Direct-Access SEGGER MSD Volume 1.00 PQ: 0 ANSI: 4[ 33.247938] sd 0:0:0:0: Attached scsi generic sg0 type 0[ 33.251170] sd 0:0:0:0: [sda] 21829 512-byte logical blocks: (11.2 MB/10.7 MiB)[ 33.253496] sd 0:0:0:0: [sda] Write Protect is off[ 33.253503] sd 0:0:0:0: [sda] Mode Sense: 0b 00 00 08[ 33.255489] sd 0:0:0:0: [sda] No Caching mode page found[ 33.255509] sd 0:0:0:0: [sda] Assuming drive cache: write through[ 33.277779] sda:[ 33.303314] sd 0:0:0:0: [sda] Attached SCSI removable disk[ 37.903846] usb 3-7: USB disconnect, device number 6[ 37.908216] BUG: kernel NULL pointer dereference, address: 0000000000000030[ 37.908226] #PF: supervisor read access in kernel mode[ 37.908231] #PF: error_code(0x0000) - not-present page[ 37.908236] PGD 0 P4D 0 [ 37.908243] Oops: 0000 [#1] SMP NOPTI[ 37.908250] CPU: 6 PID: 339 Comm: kworker/6:2 Kdump: loaded Not tainted 5.14.0-1023-oem #25-Ubuntu[ 37.908258] Hardware name: LENOVO 20WM00B7MX/20WM00B7MX, BIOS N35ET43W (1.43 ) 12/14/2021[ 37.908263] Workqueue: usb_hub_wq hub_event[ 37.908276] RIP: 0010:blk_mq_cancel_work_sync+0x5/0x60[ 37.908291] Code: 94 41 2b 5d 48 49 8d bf e0 03 00 00 89 45 d0 89 de e8 9f 1b 07 00 8b 45 d0 e9 77 ff ff ff b8 ea ff ff ff eb 98 0f 1f 44 00 00 <48> 83 7f 30 00 74 45 55 48 89 e5 41 54 49 89 fc 48 8d bf 68 05 00[ 37.908298] RSP: 0018:fffface1003d7908 EFLAGS: 00010293[ 37.908305] RAX: 0000000000000000 RBX: ffff8bda05613a00 RCX: 0000000000004e01[ 37.908311] RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000000[ 37.908316] RBP: fffface1003d7920 R08: ffffffff9b5581c0 R09: ffff8bda31d20b68[ 37.908320] R10: 0000000000000000 R11: ffff8bda31d20b90 R12: ffff8bdae12c7240[ 37.908325] R13: 0000000000000000 R14: ffff8bdae12c7240 R15: 0000000000000000[ 37.908330] FS: 0000000000000000(0000) GS:ffff8be13f700000(0000) knlGS:0000000000000000[ 37.908336] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033[ 37.908342] CR2: 0000000000000030 CR3: 0000000106480002 CR4: 0000000000770ee0[ 37.908347] PKRU: 55555554[ 37.908350] Call Trace:[ 37.908353] <TASK>[ 37.908356] ? disk_release+0x38/0x90[ 37.908366] device_release+0x38/0xa0[ 37.908376] kobject_release+0x45/0x150[ 37.908383] kobject_put+0x49/0x60[ 37.908388] put_device+0x13/0x20[ 37.908394] put_disk+0x1b/0x20[ 37.908399] sg_device_destroy+0x54/0x90[ 37.908407] sg_remove_device+0x128/0x170[ 37.908414] device_del+0x12d/0x3f0[ 37.908418] device_unregister+0x18/0x60[ 37.908422] __scsi_remove_device+0x110/0x150[ 37.908434] scsi_forget_host+0x5f/0x70[ 37.908441] scsi_remove_host+0x77/0x110[ 37.908455] usb_stor_disconnect+0x50/0xd0 [usb_storage][ 37.908470] usb_unbind_interface+0x89/0x260[ 37.908480] device_release_driver_internal+0x100/0x1d0[ 37.908490] device_release_driver+0x12/0x20[ 37.908499] bus_remove_device+0xde/0x150[ 37.908505] device_del+0x192/0x3f0[ 37.908509] ? usb_remove_ep_devs+0x1f/0x30[ 37.908516] usb_disable_device+0x95/0x1b0[ 37.908526] usb_disconnect+0xc0/0x270[ 37.908534] hub_port_connect+0x81/0x8c0[ 37.908544] port_event+0x57f/0x860[ 37.908554] hub_event+0x152/0x3b0[ 37.908563] process_one_work+0x21d/0x3c0[ 37.908574] worker_thread+0x4d/0x3f0[ 37.908580] ? process_one_work+0x3c0/0x3c0[ 37.908586] kthread+0x127/0x150[ 37.908591] ? set_kthread_struct+0x40/0x40[ 37.908596] ret_from_fork+0x1f/0x30[ 37.908606] </TASK>[ 37.908609] Modules linked in: uas usb_storage cdc_acm rfcomm ccm cmac algif_hash algif_skcipher af_alg snd_ctl_led snd_soc_skl_hda_dsp snd_soc_intel_hda_dsp_common snd_soc_hdac_hdmi snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp ip6table_mangle ip6table_nat iptable_mangle iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter bpfilter bridge stp llc bnep uvcvideo videobuf2_vmalloc videobuf2_memops btusb videobuf2_v4l2 btrtl videobuf2_common btbcm btintel videodev bluetooth mc ecdh_generic ecc intel_tcc_cooling x86_pkg_temp_thermal intel_powerclamp snd_soc_dmic coretemp mei_hdcp intel_rapl_msr binfmt_misc nls_iso8859_1 snd_sof_pci_intel_tgl snd_sof_intel_hda_common kvm_intel soundwire_intel soundwire_generic_allocation soundwire_cadence kvm snd_sof_intel_hda snd_sof_pci snd_sof_xtensa_dsp crct10dif_pclmul ghash_clmulni_intel[ 37.908724] snd_sof snd_soc_hdac_hda snd_hda_ext_core snd_soc_acpi_intel_match aesni_intel snd_soc_acpi soundwire_bus crypto_simd snd_seq_midi snd_soc_core joydev cryptd snd_compress snd_seq_midi_event intel_cstate i915 ac97_bus snd_pcm_dmaengine snd_rawmidi snd_hda_intel iwlmvm snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec snd_hda_core mac80211 snd_hwdep ttm libarc4 snd_seq snd_pcm think_lmi drm_kms_helper input_leds snd_seq_device serio_raw efi_pstore snd_timer firmware_attributes_class thinkpad_acpi cec iwlwifi rc_core wmi_bmof nvram ucsi_acpi processor_thermal_device_pci_legacy processor_thermal_device i2c_algo_bit platform_profile processor_thermal_rfim ledtrig_audio processor_thermal_mbox processor_thermal_rapl fb_sys_fops mei_me typec_ucsi hid_multitouch intel_rapl_common syscopyarea cfg80211 mei intel_soc_dts_iosf sysfillrect sysimgblt typec igen6_edac snd soundcore int3403_thermal int340x_thermal_zone mac_hid acpi_tad int3400_thermal intel_hid sparse_keymap[ 37.908824] acpi_thermal_rel acpi_pad sch_fq_codel msr drm ip_tables x_tables autofs4 raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic crc32_pclmul e1000e i2c_i801 nvme intel_lpss_pci i2c_smbus intel_lpss idma64 nvme_core thunderbolt xhci_pci xhci_pci_renesas wmi i2c_hid_acpi i2c_hid hid video pinctrl_tigerlake[ 37.908894] CR2: 0000000000000030
