Public bug reported:
SRU Justification
[Impact]
On systems with a broken BIOS that fail to program the APICID_TAG_MAP for DCA,
the dmaengine will print a warning, with stack trace, to the kernel log,
which just adds extra noise to the log and impacts testing on some platforms,
mostly on the older side that will most likely not receive an update to their
BIOS.
[Fix]
A patch from upstream linux changes the call of WARN_TAINT_ONCE() to
pr_warn_once()
and add_taint(). pr_warn_once() will not invoke a warning in the kernel and
instead
just print the associated message.
[Test Case]
The ubuntu_boot log_check test on an affected node, such as fili:amd64.
[Where problems could occur]
Chance of regression is very low to minimal with this change.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
** Affects: linux (Ubuntu Xenial)
Importance: Undecided
Assignee: Zachary Tahenakos (ztahenakos)
Status: Incomplete
** Also affects: linux (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Xenial)
Assignee: (unassigned) => Zachary Tahenakos (ztahenakos)
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https://bugs.launchpad.net/bugs/1965160
Title:
linux: Fix failure in ubuntu_boot:log_check test
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