Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
fault virtual address	= 0x418
fault code		= supervisor read data, page not present
instruction pointer	= 0x20:0xffffffff81003017
stack pointer	        = 0x28:0xfffffe0022b196f0
frame pointer	        = 0x28:0xfffffe0022b19790
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags	= interrupt enabled, resume, IOPL = 0
current process		= 990 (syz-executor.2)
trap number		= 12
panic: page fault
cpuid = 1
time = 1571361951
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0022b192f0
vpanic() at vpanic+0x1c7/frame 0xfffffe0022b19360
panic() at panic+0x43/frame 0xfffffe0022b193c0
trap_fatal() at trap_fatal+0x4d6/frame 0xfffffe0022b19450
trap_pfault() at trap_pfault+0xdc/frame 0xfffffe0022b194f0
trap() at trap+0x44a/frame 0xfffffe0022b19620
calltrap() at calltrap+0x8/frame 0xfffffe0022b19620
--- trap 0xc, rip = 0xffffffff81003017, rsp = 0xfffffe0022b196f0, rbp = 0xfffffe0022b19790 ---
__mtx_lock_sleep() at __mtx_lock_sleep+0x127/frame 0xfffffe0022b19790
__mtx_lock_flags() at __mtx_lock_flags+0x155/frame 0xfffffe0022b197f0
soo_stat() at soo_stat+0x9c/frame 0xfffffe0022b19830
kern_fstat() at kern_fstat+0xed/frame 0xfffffe0022b19880
sys_fstat() at sys_fstat+0x2b/frame 0xfffffe0022b19980
amd64_syscall() at amd64_syscall+0x473/frame 0xfffffe0022b19ab0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe0022b19ab0
--- syscall (198, FreeBSD ELF64, nosys), rip = 0x4132aa, rsp = 0x7fffdff9af38, rbp = 0x2 ---
KDB: enter: panic
[ thread pid 990 tid 100666 ]
Stopped at      kdb_enter+0x67: movq    $0,0x14772a6(%rip)
db>