*** This bug is a duplicate of bug 1937276 ***
https://bugs.launchpad.net/bugs/1937276
Marking as duplicate as bug 1937276, which has more info about the root
cause.
** This bug has been marked a duplicate of bug 1937276
log_check test in ubuntu_boot will erroneously get error on manually
provisioned systems
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https://bugs.launchpad.net/bugs/1937068
Title:
"BUG: non-zero pgtables_bytes on freeing mm: 16384" errors during boot
on bionic/linux s390x
Status in ubuntu-kernel-tests:
New
Status in linux package in Ubuntu:
Invalid
Status in linux source package in Bionic:
Confirmed
Bug description:
[Impact]
When booting bionic/linux 4.15.0-152.159 on a s390x machine there's a
lot of the following error message on the kernel log:
BUG: non-zero pgtables_bytes on freeing mm: 16384
This error doesn't seem to happen on every boot.
I could trace this happening as far back as 4.15.0-143.147, but this
could be older as I don't have test results for older releases.
This is similar to bug 1840046, which was supposedly fixed by an
upstream stable patch around Sep/2019.
[Test case]
Boot bionic/linux on a s390x system.
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