Please raise the issue to linux-usb mailing list. Possible use-after-
free bug here.

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https://bugs.launchpad.net/bugs/1871143

Title:
  Kernel crash during USB device enumeration or mounting

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Device is an Adafruit microcontroller board running
  https://github.com/adafruit/circuitpython, using the TinyUSB USB
  stack: https://github.com/hathach/tinyusb.

  Device presents a composite USB device that includes MSC, CDC, HID, and MIDI
  Device was commanded to forcibly reformat its MSC FAT12 filesystem and then 
reset, which causes a USB reset and re-enumeration.

  This causes some USB kernel code to crash, much of the time, though
  not quite all the time.

  I work for Adafruit and the maintainer of TinyUSB also works for
  Adafruit, so we can provide further help to track this down.

  Attached is the dmesg file for the crash. I tried uploading the dump file 
from kdump, but launchpad is timing out. The dump file is available at:
  https://drive.google.com/open?id=1ka3ySSccEMRSmnYgI9X16IndPDmIKTD6

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: linux-image-5.4.0-21-generic 5.4.0-21.25
  ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
  Uname: Linux 5.4.0-21-generic x86_64
  ApportVersion: 2.20.11-0ubuntu24
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  halbert    1857 F.... pulseaudio
   /dev/snd/controlC2:  halbert    1857 F.... pulseaudio
  CurrentDesktop: X-Cinnamon
  Date: Mon Apr  6 11:09:43 2020
  HibernationDevice: RESUME=UUID=55694d39-bafe-45f8-ba05-ea5d54a93a85
  InstallationDate: Installed on 2017-09-19 (929 days ago)
  InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 
(20170215.2)
  IwConfig:
   eno1      no wireless extensions.
   
   lo        no wireless extensions.
  MachineType: Dell Inc. OptiPlex 7010
  ProcFB: 0 i915drmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-21-generic 
root=UUID=b3868153-c620-4efe-9dfc-8059dc6288a8 ro quiet splash 
crashkernel=512M-:192M vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-5.4.0-21-generic N/A
   linux-backports-modules-5.4.0-21-generic  N/A
   linux-firmware                            1.187
  RfKill:
   0: hci0: Bluetooth
        Soft blocked: yes
        Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: Upgraded to focal on 2020-03-08 (28 days ago)
  dmi.bios.date: 06/28/2018
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A29
  dmi.board.name: 0WR7PY
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A01
  dmi.chassis.type: 15
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvrA29:bd06/28/2018:svnDellInc.:pnOptiPlex7010:pvr01:rvnDellInc.:rn0WR7PY:rvrA01:cvnDellInc.:ct15:cvr:
  dmi.product.name: OptiPlex 7010
  dmi.product.sku: OptiPlex 7010
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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