Public bug reported:
We're seeing a very reproducible regression in the bionic kernel
triggered by the stress-ng chdir test performed by the Ubuntu
certification suite. Platform is a HiSilicon D05 arm64 server, but we
don't have reason to believe it is platform specific at this time.
[Test Case]
$ sudo apt-add-repository -y ppa:hardware-certification/public
$ sudo apt install -y canonical-certification-server
$ sudo mkfs.ext4 /dev/sda1 (Obviously, this should not be your root disk!!)
$ sudo /usr/lib/plainbox-provider-checkbox/bin/disk_stress_ng sda --base-time
240 --really-run
This test runs a series of stress-ng tests against /dev/sda, and fails
on the "chdir" test. To speed up reproduction, reduce the test list to
just "chdir" in the disk_stress_ng script. Attempts to reproduce this
directly with stress-ng have failed - presumably because of other
environment setup that this script performs (e.g. setting aio-max-nr to
524288).
Our reproduction test is to use a non-root disk because it can lead to
corruption, and mkfs.ext4'ing the partition just before running the
test, to get to a pristine fs state.
I bisected this down to the following commit:
commit 555bc9b1421f10d94a1192c7eea4a59faca3e711
Author: Theodore Ts'o <ty...@mit.edu>
Date: Mon Feb 19 14:16:47 2018 -0500
ext4: don't update checksum of new initialized bitmaps
BugLink: http://bugs.launchpad.net/bugs/1773233
commit 044e6e3d74a3d7103a0c8a9305dfd94d64000660 upstream.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
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https://bugs.launchpad.net/bugs/1780137
Title:
[Regression] EXT4-fs error (device sda1):
ext4_validate_inode_bitmap:99: comm stress-ng: Corrupt inode bitmap
Status in linux package in Ubuntu:
Incomplete
Bug description:
We're seeing a very reproducible regression in the bionic kernel
triggered by the stress-ng chdir test performed by the Ubuntu
certification suite. Platform is a HiSilicon D05 arm64 server, but we
don't have reason to believe it is platform specific at this time.
[Test Case]
$ sudo apt-add-repository -y ppa:hardware-certification/public
$ sudo apt install -y canonical-certification-server
$ sudo mkfs.ext4 /dev/sda1 (Obviously, this should not be your root disk!!)
$ sudo /usr/lib/plainbox-provider-checkbox/bin/disk_stress_ng sda --base-time
240 --really-run
This test runs a series of stress-ng tests against /dev/sda, and fails
on the "chdir" test. To speed up reproduction, reduce the test list to
just "chdir" in the disk_stress_ng script. Attempts to reproduce this
directly with stress-ng have failed - presumably because of other
environment setup that this script performs (e.g. setting aio-max-nr
to 524288).
Our reproduction test is to use a non-root disk because it can lead to
corruption, and mkfs.ext4'ing the partition just before running the
test, to get to a pristine fs state.
I bisected this down to the following commit:
commit 555bc9b1421f10d94a1192c7eea4a59faca3e711
Author: Theodore Ts'o <ty...@mit.edu>
Date: Mon Feb 19 14:16:47 2018 -0500
ext4: don't update checksum of new initialized bitmaps
BugLink: http://bugs.launchpad.net/bugs/1773233
commit 044e6e3d74a3d7103a0c8a9305dfd94d64000660 upstream.
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