panic: ffs_blkfree: bad size
Starting stack trace...
panic(ffffffff833132b7) at panic+0x1ba sys/kern/subr_prf.c:229
ffs_blkfree(fffffd805f0a89c0,3eb915e6,4000) at ffs_blkfree+0xd33 sys/ufs/ffs/ffs_alloc.c:1285
ffs_truncate(fffffd805f0a89c0,0,0,fffffd807f7d75b0) at ffs_truncate+0x116b sys/ufs/ffs/ffs_inode.c:304
ffs_write(ffff80002a907540) at ffs_write+0xbab sys/ufs/ffs/ffs_vnops.c:401
VOP_WRITE(fffffd8061dd9620,ffff80002a907760,11,fffffd807f7d75b0) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245
vn_write(fffffd80766ff170,ffff80002a907760,0) at vn_write+0x1c3 sys/kern/vfs_vnops.c:408
dofilewritev(ffff80002a7f76e0,6,ffff80002a907760,0,ffff80002a907820) at dofilewritev+0x23c sys/kern/sys_generic.c:380
sys_writev(ffff80002a7f76e0,ffff80002a9078d0,ffff80002a907820) at sys_writev+0xd8 sys/kern/sys_generic.c:327
syscall(ffff80002a9078d0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xe9a555803c0, count: 247
End of stack trace.