panic: ffs_blkfree_cg: freeing free block
cpuid = 0
time = 5
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0021293150
vpanic() at vpanic+0x1e0/frame 0xfffffe00212931b0
panic() at panic+0x43/frame 0xfffffe0021293210
ffs_blkfree_cg() at ffs_blkfree_cg+0x6e9/frame 0xfffffe00212932d0
ffs_blkfree() at ffs_blkfree+0x15e/frame 0xfffffe0021293350
ffs_indirtrunc() at ffs_indirtrunc+0x724/frame 0xfffffe0021293450
ffs_indirtrunc() at ffs_indirtrunc+0x856/frame 0xfffffe0021293530
ffs_truncate() at ffs_truncate+0x17c3/frame 0xfffffe0021293720
ufs_setattr() at ufs_setattr+0x918/frame 0xfffffe00212937c0
VOP_SETATTR_APV() at VOP_SETATTR_APV+0xc2/frame 0xfffffe00212937f0
vn_truncate() at vn_truncate+0x23f/frame 0xfffffe0021293930
kern_ftruncate() at kern_ftruncate+0x13b/frame 0xfffffe0021293980
amd64_syscall() at amd64_syscall+0x436/frame 0xfffffe0021293ab0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe0021293ab0
--- syscall (198, FreeBSD ELF64, nosys), rip = 0x412e5a, rsp = 0x7fffdfffdf38, rbp = 0x2 ---
KDB: enter: panic
[ thread pid 22661 tid 101159 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why