panic: ffs_blkfree_cg: freeing free block
cpuid = 1
time = 147
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe001fab6150
vpanic() at vpanic+0x1e0/frame 0xfffffe001fab61b0
panic() at panic+0x43/frame 0xfffffe001fab6210
ffs_blkfree_cg() at ffs_blkfree_cg+0x6e9/frame 0xfffffe001fab62d0
ffs_blkfree() at ffs_blkfree+0x15e/frame 0xfffffe001fab6350
ffs_indirtrunc() at ffs_indirtrunc+0x724/frame 0xfffffe001fab6450
ffs_indirtrunc() at ffs_indirtrunc+0x856/frame 0xfffffe001fab6530
ffs_truncate() at ffs_truncate+0x17c3/frame 0xfffffe001fab6720
ufs_setattr() at ufs_setattr+0x918/frame 0xfffffe001fab67c0
VOP_SETATTR_APV() at VOP_SETATTR_APV+0xc2/frame 0xfffffe001fab67f0
vn_truncate() at vn_truncate+0x23f/frame 0xfffffe001fab6930
kern_ftruncate() at kern_ftruncate+0x13b/frame 0xfffffe001fab6980
amd64_syscall() at amd64_syscall+0x436/frame 0xfffffe001fab6ab0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe001fab6ab0
--- syscall (198, FreeBSD ELF64, nosys), rip = 0x412e5a, rsp = 0x7fffdffdcf38, rbp = 0x2 ---
KDB: enter: panic
[ thread pid 5986 tid 100675 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why