[Bug 1897741] Re: hang after using util badblocks

[Theodore Ts'o]

If the computer is hanging as you describe, this is a kernel bug,
possibly exacerbated by a hardware bug.  It isn't a userspace bug;
e2fsprogs is just reading from the block device.  If that is causing the
computer hang, it's by definition not a userspace bug.

So this needs to be a kernel investigation; can it be reliably
reproduced?   What kernel version is it?   What is the hardware ---
especially what kind of storage device, and how is it connected to the
computer?    If you hook up a serial console, are there any interesting
kernel messages, including potentially device driver messages indicating
some kind of hardware issue (e.g., media errors, etc.)

In any case, this needs to be redirected to the kernel, and if you have
an LTS support contract, I'd suggest contacting Canonical's enterprise
support to work the kernel issue.

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https://bugs.launchpad.net/bugs/1897741

Title:
  hang after using util badblocks

Status in e2fsprogs package in Ubuntu:
  New

Bug description:
  sudo badblocks -v /dev/sdb2 > badsectors.txt

  after this command my computer hang,  keyboard/mouse not working, no
  reaction, no ping in local network

  only hardreset can help

  sudo fdisk -l | grep /dev/sdb2 
  /dev/sdb2           206848 1422700543 1422493696 678,3G  7 HPFS/NTFS/exFAT

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: e2fsprogs 1.44.1-1ubuntu1.3
  ProcVersionSignature: Ubuntu 5.4.0-48.52~18.04.1-generic 5.4.60
  Uname: Linux 5.4.0-48-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.17
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Tue Sep 29 16:00:24 2020
  InstallationDate: Installed on 2020-03-09 (204 days ago)
  InstallationMedia: Xubuntu 18.04.4 LTS "Bionic Beaver" - Release amd64 (20200203.1)
  SourcePackage: e2fsprogs
  UpgradeStatus: No upgrade log present (probably fresh install)

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