panic: ufs_rename: lost dir entry Starting stack trace... panic(ffffffff82fca573) at panic+0x1ba sys/kern/subr_prf.c:229 ufs_rename(ffff800035a09528) at ufs_rename+0x18b2 VOP_RENAME(fffffd8063277488,fffffd8058a89600,ffff800035a096f8,fffffd8058a896d8,0,ffff800035a09648) at VOP_RENAME+0x13c sys/kern/vfs_vops.c:376 dorenameat(ffff80002a526030,ffffff9c,20000540,ffffff9c,200005c0) at dorenameat+0x3f8 sys/kern/vfs_syscalls.c:3020 syscall(ffff800035a09890) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd2ac5759e00, count: 251 End of stack trace.