Fatal trap 9: general protection fault while in kernel mode
cpuid = 0; apic id = 00
instruction pointer	= 0x20:0xffffffff811d396d
stack pointer	        = 0x0:0xfffffe0022e7c430
frame pointer	        = 0x0:0xfffffe0022e7c460
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags	= resume, IOPL = 0
current process		= 791 (syz-executor.0)
trap number		= 9
panic: general protection fault
cpuid = 0
time = 1569458291
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0022e7c100
vpanic() at vpanic+0x1e0/frame 0xfffffe0022e7c160
panic() at panic+0x43/frame 0xfffffe0022e7c1c0
trap_fatal() at trap_fatal+0x4de/frame 0xfffffe0022e7c240
trap() at trap+0xb8/frame 0xfffffe0022e7c360
calltrap() at calltrap+0x8/frame 0xfffffe0022e7c360
--- trap 0x9, rip = 0xffffffff811d396d, rsp = 0xfffffe0022e7c430, rbp = 0xfffffe0022e7c460 ---
strlen() at strlen+0x1d/frame 0xfffffe0022e7c460
kvprintf() at kvprintf+0xd01/frame 0xfffffe0022e7c5b0
vsnprintf() at vsnprintf+0x43/frame 0xfffffe0022e7c5f0
vpanic() at vpanic+0x113/frame 0xfffffe0022e7c650
panic() at panic+0x43/frame 0xfffffe0022e7c6b0
__mtx_lock_flags() at __mtx_lock_flags+0x1fd/frame 0xfffffe0022e7c710
sctp_endpoint_probe() at sctp_endpoint_probe+0xc2/frame 0xfffffe0022e7c7d0
sctp_inpcb_bind() at sctp_inpcb_bind+0x9d3/frame 0xfffffe0022e7c890
sobind() at sobind+0x7d/frame 0xfffffe0022e7c8d0
kern_bindat() at kern_bindat+0x1bb/frame 0xfffffe0022e7c930
sys_bind() at sys_bind+0xd9/frame 0xfffffe0022e7c970
ia32_syscall() at ia32_syscall+0x46a/frame 0xfffffe0022e7cab0
int0x80_syscall_common() at int0x80_syscall_common+0x9c/frame 0x814250f
KDB: enter: panic
[ thread pid 791 tid 100122 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why