panic: ufs_rename: lost dir entry Starting stack trace... panic(ffffffff82fcbb9a) at panic+0x1ba sys/kern/subr_prf.c:229 ufs_rename(ffff80002a51f468) at ufs_rename+0x18b2 VOP_RENAME(fffffd80670bbc10,fffffd80670bb700,ffff80002a51f638,fffffd80670bb550,0,ffff80002a51f588) at VOP_RENAME+0x13c sys/kern/vfs_vops.c:376 dorenameat(ffff8000376536f0,ffffff9c,20000540,ffffff9c,200005c0) at dorenameat+0x3f8 sys/kern/vfs_syscalls.c:3020 syscall(ffff80002a51f7d0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd89f33b9540, count: 251 End of stack trace.