### unprivileged user ###
uid=1001(maxx) gid=1001(maxx) groups=1001(maxx)
### default-kernel reachability probe (DF-0847 #0 baseline) ###
quotactl(Q_QUOTAON, "/mnt/q", uid=0, "/mnt/q/quota.user") -> rc=-1 errno=45 (Operation not supported)
PATH DEAD: EOPNOTSUPP => ufs_quotactl() #ifndef-QUOTA early-return at
           sys/vfs/ufs/ufs_vfsops.c:77-78. `options QUOTA` is absent from
           X86_64_GENERIC, so every caller of ufs_dqget() is compiled out.
           => DF-0847 unreachable on this (default) kernel.
### repeat for determinism ###
quotactl(Q_QUOTAON, "/mnt/q", uid=0, "/mnt/q/quota.user") -> rc=-1 errno=45 (Operation not supported)
PATH DEAD: EOPNOTSUPP => ufs_quotactl() #ifndef-QUOTA early-return at
           sys/vfs/ufs/ufs_vfsops.c:77-78. `options QUOTA` is absent from
           X86_64_GENERIC, so every caller of ufs_dqget() is compiled out.
           => DF-0847 unreachable on this (default) kernel.