The reporter user confirmed that the organic reproducer (Varnish Cache Plus with the Crypto vmod) ran successfully over the weekend with the 4.15.0-114-generic kernel, to approximately 3 days (2d 20h runtime.)
The same workload used to trigger the bug with a few hours, so it does look good now.
Verification done for bionic-proposed.
The reporter user confirmed that the organic reproducer (Varnish Cache Plus with the Crypto vmod) ran successfully over the weekend with the 4.15.0-114-generic kernel, to approximately 3 days (2d 20h runtime.)
The same workload used to trigger the bug with a few hours, so it does look good now.