panic: ufs_rename: lost dir entry Starting stack trace... panic(ffffffff82fc87e5) at panic+0x1ba sys/kern/subr_prf.c:229 ufs_rename(ffff80002a567028) at ufs_rename+0x18b2 VOP_RENAME(fffffd8072142640,fffffd80721429a0,ffff80002a5671f8,fffffd806358b648,0,ffff80002a567148) at VOP_RENAME+0x13c sys/kern/vfs_vops.c:376 dorenameat(ffff80002a49d6e0,ffffff9c,20000540,ffffff9c,200005c0) at dorenameat+0x3f8 sys/kern/vfs_syscalls.c:3020 syscall(ffff80002a567390) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xab59be70160, count: 251 End of stack trace.