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[Bug 1912316] Re: log_check / kernel_tainted test from ubuntu_boot failed on Intel Cloud node grumman (failed with flag 2048)

 

** Tags added: kernel-daily-bug

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https://bugs.launchpad.net/bugs/1912316

Title:
  log_check / kernel_tainted test from ubuntu_boot failed on Intel Cloud
  node grumman (failed with flag 2048)

Status in ubuntu-kernel-tests:
  New
Status in linux package in Ubuntu:
  Incomplete
Status in linux source package in Xenial:
  Confirmed
Status in linux source package in Bionic:
  Confirmed
Status in linux source package in Focal:
  Confirmed
Status in linux source package in Groovy:
  Won't Fix

Bug description:
  Issue found on node grumman, this is not a regression.

  The kernel_tainted check reports a non-zero flag 2048, this means
  "workaround for bug in platform firmware applied"

  log_check reports WARNINGs found in the dmesg:

  10.	01/06 09:46:51 INFO |ubuntu_boo:0030| kernel: [ 7.852005] WARNING: CPU: 0 PID: 179 at /build/linux-0dlxvs/linux-4.4.0/drivers/dma/ioat/dca.c:342 ioat_dca_init+0x17c/0x1a0 [ioatdma]()
  11.	01/06 09:46:51 INFO |ubuntu_boo:0030| kernel: [ 5.387292] WARNING: CPU: 0 PID: 181 at /build/linux-7Nk88i/linux-4.4.0/drivers/dma/ioat/dca.c:342 ioat_dca_init+0x17c/0x1a0 [ioatdma]()
  12.	01/06 09:46:51 INFO |ubuntu_boo:0030| kernel: [ 6.039705] WARNING: CPU: 0 PID: 4 at /build/linux-7Nk88i/linux-4.4.0/drivers/dma/ioat/dca.c:342 ioat_dca_init+0x17c/0x1a0 [ioatdma]()

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