panic: ufs_rename: lost dir entry Starting stack trace... panic(ffffffff82fcb607) at panic+0x1ba sys/kern/subr_prf.c:229 ufs_rename(ffff8000301b78d8) at ufs_rename+0x18b2 VOP_RENAME(fffffd8067e4eea0,fffffd806c8f3130,ffff8000301b7aa8,fffffd805a5cc128,0,ffff8000301b79f8) at VOP_RENAME+0x13c sys/kern/vfs_vops.c:376 dorenameat(ffff80002a565708,ffffff9c,20000540,ffffff9c,200005c0) at dorenameat+0x3f8 sys/kern/vfs_syscalls.c:3020 syscall(ffff8000301b7c40) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8bdd8ce24b0, count: 251 End of stack trace.