Created attachment 218405 [details] dump info file Hi, On my laptop I'm experiencing some kernel panics, mainly at startup or shutdown. I've got a good dump from a panic happening in shutdown, I'm attaching the core.txt and info files. The panic happens every 3-4 shutdowns, and sometimes at startup, I'll also add a dump from the startup crash as soon as I can get one. The machine is running r366077, with a GENERIC-NODEBUG kernel. I did test the ram and it looks fine. Also this machine already had a zfs elated issue due to a shutdown panic some time ago, it was refusing to boot with "zfs: allocating allocated segment". I reinstalled the OS from scratch at the time. I am unable to tell much more, apart from the clear connection to ZFS. If any further information is needed please ask. I do have the core file, so if some further investigation is needed I can try that, if told what to look at. Thanks in advance.
Created attachment 218406 [details] core dump details
I wanted to followup in this. While it's not definitive I discovered, when updating the machine from old in kernel ZFS to in kernel OpenZFS I actually did not perform the "zpool upgrade". I did that at a later time (a few days ago). And I have not seen a crash since. This is not definite because too few days have passed and I can't still rule out a crash in the next few days, but a pattern is showing. The system was crashing also with the old in kernel ZFS code. Maybe the same problem was present there and is still lurking in OpenZFS, but is mitigated by the presence of a new feature flag?
Created attachment 219200 [details] Crash info for crash duting pkg upgrade I spoke too early. Just after sending the previous comment the machine crashed during "pkg upgrade". It was extracting content of a package. I'm attaching info about this last crash. I update to new head since, it was r366077 as in the previous dump.