panic: ffs_blkfree: bad size
Starting stack trace...
panic(ffffffff8300294d) at panic+0x1d0 sys/kern/subr_prf.c:229
ffs_blkfree(fffffd8065bb3340,1,4000) at ffs_blkfree+0xd33 sys/ufs/ffs/ffs_alloc.c:1285
ffs_indirtrunc(fffffd8065bb3340,ffffffffffbff7f2,1d4d80,fbff7f4,2,ffff80002a157f10) at ffs_indirtrunc+0x7b3
ffs_truncate(fffffd8065bb3340,40000000007,4,fffffd807f7d3618) at ffs_truncate+0x1063 sys/ufs/ffs/ffs_inode.c:297
ffs_write(ffff80002a1580d0) at ffs_write+0xbab sys/ufs/ffs/ffs_vnops.c:401
VOP_WRITE(fffffd8065bb2100,ffff80002a158278,7,fffffd807f7d3618) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245
vn_write(fffffd80701f55f0,ffff80002a158278,0) at vn_write+0x1d1 sys/kern/vfs_vnops.c:408
dofilewritev(ffff80002a160048,4,ffff80002a158278,0,ffff80002a158330) at dofilewritev+0x23c sys/kern/sys_generic.c:375
sys_write(ffff80002a160048,ffff80002a1583e0,ffff80002a158330) at sys_write+0xa2 sys/kern/sys_generic.c:295
syscall(ffff80002a1583e0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a1583e0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x47b0658aea0, count: 246
End of stack trace.