While doing testing for https://github.com/openzfs/zfs/pull/15838 I started hitting "Memory fault" zdb errors on FreeBSD 13. I was testing out running ZTS on a VM running within a github runner, so I assumed it was my weird test environment was the problem. Then I saw it in the test results for an unrelated PR (#16304):
System information
Describe the problem you're observing
While doing testing for https://github.com/openzfs/zfs/pull/15838 I started hitting "Memory fault" zdb errors on FreeBSD 13. I was testing out running ZTS on a VM running within a github runner, so I assumed it was my weird test environment was the problem. Then I saw it in the test results for an unrelated PR (#16304):
https://build.openzfs.org/builders/FreeBSD%20stable%2F13%20amd64%20%28TEST%29/builds/2278/steps/shell_4/logs/log
Just search for "Memory fault" in the logs and you'll see a ton of failures.
Describe how to reproduce the problem
I can only reproduce it on a github runner using the non-standard setup in https://github.com/openzfs/zfs/pull/15838.
Include any warning/errors/backtraces from the system logs