So, as far as I understood, it actually deals with the issue of manual device detach during a writeback clean-up and causing deadlock. The timeline makes sense when we look for Bionic GA kernel, as well. Bionic GA should not include this fix, but HWE should.
Could we run the tests again, but focusing on Bionic hwe? Afair hwe runs 4.18, which should include this commit.
I was looking into kernel commits and I came across this: https:/ /github. com/torvalds/ linux/commit/ fadd94e05c02afe c7b70b0b1491562 4f1782f578
So, as far as I understood, it actually deals with the issue of manual device detach during a writeback clean-up and causing deadlock. The timeline makes sense when we look for Bionic GA kernel, as well. Bionic GA should not include this fix, but HWE should.
Could we run the tests again, but focusing on Bionic hwe? Afair hwe runs 4.18, which should include this commit.