panic: ufs_rename: lost dir entry Starting stack trace... panic(ffffffff832fbcd2) at panic+0x1ba sys/kern/subr_prf.c:229 ufs_rename(ffff80002a84f018) at ufs_rename+0x18b2 VOP_RENAME(fffffd806a6e1b38,fffffd806a473a70,ffff80002a84f1e8,fffffd806a6e1b38,0,ffff80002a84f138) at VOP_RENAME+0x13c sys/kern/vfs_vops.c:376 dorenameat(ffff80002a8e4f78,ffffff9c,400000000340,ffffff9c,400000000000) at dorenameat+0x3f8 sys/kern/vfs_syscalls.c:3038 syscall(ffff80002a84f380) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8923cff8e70, count: 251 End of stack trace.