Created attachment 148635 [details] core.txt.4 The test panics right after this point: ./spare.t .. 1..18 The stack trace per kgdb is attached. I have the corefile if you need further information.
ngie, can we close this? I don't know where to find zpool/remove/spare.t, but spares should be working fine now.
There are a variety of spare.t tests under tools/regression/zfs/zpool
Doesn't repro on ^/head.