Created attachment 196318 [details] Screenshot of the panic message After updating to 11.2-RELEASE, FreeBSD panics when there is heavy disk activity on a GELI volume with soft updates enabled. I can reproduce this by duplicating a 8TB volume via rsync to the target disk, it panics every time with the same message: "panic: softdep_deallocate_dependencies: dangling deps" Disabling soft updates (tunefs -n disable) will allow the operation to finish. The system is stable otherwise (memtest86 returns ok after a night of testing), and the backup worked flawlessly on 11.1 and a volume without GELI on 11.2. Attached you will find a screenshot of the panic, unfortunately I was not able to get this in text form. There has also been a second report with the same issue on reddit: https://www.reddit.com/r/freebsd/comments/8uylxc/softdep_panics_on_112release/ Please let me know if I can provide any further information, I am happy to help to get this cleared up.
I did some further digging and it seems that GELI is not necessary to reproduce the panic. I opened a separate bug report with a more detailed description: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230962