In Xenial source code, the warning was triggered here in ioat_dca_init()
of drivers/dma/ioat/dca.c:

        if (dca3_tag_map_invalid(ioatdca->tag_map)) {
                WARN_TAINT_ONCE(1, TAINT_FIRMWARE_WORKAROUND,
                                "%s %s: APICID_TAG_MAP set incorrectly by BIOS, 
disabling DCA\n",
                                dev_driver_string(&pdev->dev),
                                dev_name(&pdev->dev));
                free_dca_provider(dca);
                return NULL;
        }

This is the WARNING in log_check, I think it generates the tainted flag
as well.

The code was later replaced by:
https://github.com/torvalds/linux/commit/036e9ef8becde736e693be4f4bef56d5b56fc298
#diff-a6ce63e9c9f1a0aac9223c055a717e8fd34d3a4793a3166e4a9bb3b6d1c54c9f

** Also affects: linux (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Xenial)
   Importance: Undecided
       Status: New

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1912316

Title:
  log_check / kernel_tainted test from ubuntu_boot failed on Intel Cloud
  node grumman

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1912316/+subscriptions

-- 
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

Reply via email to