Comment 2 for bug 1754053

These observations were on a system in our lab called "seuss". My suggestions for next steps would be:

1) Determine how reliable this failure is.
 a) Deploy xenial/hwe on seuss, and downgrade the kernel to the version in the crash log (4.13.0-36-generic #40~16.04.1-Ubuntu).
 b) Run the com.canonical.certification::disk/disk_stress_ng_sda test ~10 times, and see how frequently we hit this failure.

2) Test another CRB1S system just like in 1). Does it also hit this issue?

3) Test w/ the latest upstream kernel (https://wiki.ubuntu.com/Kernel/MainlineBuilds). Is it still reproducible?

4) If found to be reliably failing in #1, but never fails with the latest mainline kernel in #3, it maybe a candidate for bisection. I'd suggest bisecting with upstream git, first verifying that v4.13 fails and master does not (to rule out Ubuntu-specific patches). Remember this will be backwards from a typical bisect - "good" here means it fails, "bad" means it does not fail. Therefore, the first "bad" commit would be the one that fixes it.