Public bug reported:
the ZFS modules in the shipping focal kernel do not contain the intree
flag, and because of that I believe they are the cause of kernel
tainting discovered during 20.04 certification testing.
The output from a recent certification test run for 20.04:
Kernel taint value is 4097
Taint bit value: 0 (proprietary module was loaded)
Taint bit value: 12 (externally-built ('out-of-tree') module was loaded)
Looking into modinfo for everything loaded at the time, it appears that
the ZFS modules are loaded (even though we did not configure any ZFS
filesystems), and that seems to be the root cause of the test failure.
To test this, I checked /proc/sys/kernel/tainted and verified it was
tainted. I then blacklisted all the ZFS related modules and rebooted,
and then checked /proc/sys/kernel/tainted again and the kernel no longer
shows as being tainted.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1876990
Title:
zfs modules in Focal kernel taint kernel
Status in linux package in Ubuntu:
New
Bug description:
the ZFS modules in the shipping focal kernel do not contain the intree
flag, and because of that I believe they are the cause of kernel
tainting discovered during 20.04 certification testing.
The output from a recent certification test run for 20.04:
Kernel taint value is 4097
Taint bit value: 0 (proprietary module was loaded)
Taint bit value: 12 (externally-built ('out-of-tree') module was loaded)
Looking into modinfo for everything loaded at the time, it appears
that the ZFS modules are loaded (even though we did not configure any
ZFS filesystems), and that seems to be the root cause of the test
failure. To test this, I checked /proc/sys/kernel/tainted and
verified it was tainted. I then blacklisted all the ZFS related
modules and rebooted, and then checked /proc/sys/kernel/tainted again
and the kernel no longer shows as being tainted.
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https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1876990/+subscriptions
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