db> show msgbuf
msgbufp = 0xfffff8207fffffb8
magic = 63062, size = 98232, r= 21680, w = 23055, ptr = 0xfffff8207ffe8000, cksum= 1824051
panic: vm_fault: fault on nofault entry, addr: fffffe000037d000
cpuid = 0
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe2022235fe0
panic() at panic+0x1c1/frame 0xfffffe20222360a0
vm_fault_hold() at vm_fault_hold+0x2257/frame 0xfffffe20222362f0
vm_fault() at vm_fault+0x78/frame 0xfffffe2022236330
trap_pfault() at trap_pfault+0x196/frame 0xfffffe20222363d0
trap() at trap+0x461/frame 0xfffffe20222365e0
calltrap() at calltrap+0x8/frame 0xfffffe20222365e0
--- trap 0xc, rip = 0xffffffff80abfdbf, rsp = 0xfffffe20222366a0, rbp = 0xfffffe20222366b0 ---
copyout() at copyout+0x3f/frame 0xfffffe20222366b0
uiomove_faultflag() at uiomove_faultflag+0xf3/frame 0xfffffe20222366f0
uiomove_object() at uiomove_object+0x683/frame 0xfffffe2022236770
VOP_READ_APV() at VOP_READ_APV+0xa1/frame 0xfffffe20222367a0
vn_read() at vn_read+0x16c/frame 0xfffffe2022236820
vn_io_fault() at vn_io_fault+0x10a/frame 0xfffffe20222368a0
dofileread() at dofileread+0x95/frame 0xfffffe20222368f0
kern_readv() at kern_readv+0x68/frame 0xfffffe2022236940
sys_read() at sys_read+0x63/frame 0xfffffe2022236990
amd64_syscall() at amd64_syscall+0x3e7/frame 0xfffffe2022236ab0
Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe2022236ab0
--- syscall (3, FreeBSD ELF64, sys_read), rip = 0x800fb2bfa, rsp = 0x7fffffff6128, rbp = 0x7fffffff6170 ---
KDB: enter: panic