panic: ffs_blkfree_cg: freeing free block
cpuid = 1
time = 21
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe001facc0c0
vpanic() at vpanic+0x1e0/frame 0xfffffe001facc120
panic() at panic+0x43/frame 0xfffffe001facc180
ffs_blkfree_cg() at ffs_blkfree_cg+0x6e9/frame 0xfffffe001facc240
ffs_blkfree() at ffs_blkfree+0x15e/frame 0xfffffe001facc2c0
ffs_indirtrunc() at ffs_indirtrunc+0x724/frame 0xfffffe001facc3c0
ffs_indirtrunc() at ffs_indirtrunc+0x856/frame 0xfffffe001facc4a0
ffs_truncate() at ffs_truncate+0x17c3/frame 0xfffffe001facc690
ufs_setattr() at ufs_setattr+0x918/frame 0xfffffe001facc730
VOP_SETATTR_APV() at VOP_SETATTR_APV+0xc2/frame 0xfffffe001facc760
kern_truncate() at kern_truncate+0x289/frame 0xfffffe001facc980
amd64_syscall() at amd64_syscall+0x436/frame 0xfffffe001faccab0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe001faccab0
--- syscall (198, FreeBSD ELF64, nosys), rip = 0x412e5a, rsp = 0x7fffdfffdf38, rbp = 0x2 ---
KDB: enter: panic
[ thread pid 7953 tid 100898 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why