Fatal trap 9: general protection fault while in kernel mode
cpuid = 1; apic id = 01
instruction pointer	= 0x20:0xffffffff812c1d3c
stack pointer	        = 0x0:0xfffffe0020ecc770
frame pointer	        = 0x0:0xfffffe0020ecc7b0
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		= 854 (syz-executor.0)
trap number		= 9
panic: general protection fault
cpuid = 1
time = 1559852775
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0020ecc440
vpanic() at vpanic+0x1e0/frame 0xfffffe0020ecc4a0
panic() at panic+0x43/frame 0xfffffe0020ecc500
trap_fatal() at trap_fatal+0x4c6/frame 0xfffffe0020ecc580
trap() at trap+0xba/frame 0xfffffe0020ecc6a0
calltrap() at calltrap+0x8/frame 0xfffffe0020ecc6a0
--- trap 0x9, rip = 0xffffffff812c1d3c, rsp = 0xfffffe0020ecc770, rbp = 0xfffffe0020ecc7b0 ---
sctp_copy_skeylist() at sctp_copy_skeylist+0x8c/frame 0xfffffe0020ecc7b0
sctp_initialize_auth_params() at sctp_initialize_auth_params+0x319/frame 0xfffffe0020ecc810
sctp_connect() at sctp_connect+0x4a6/frame 0xfffffe0020ecc870
soconnectat() at soconnectat+0x183/frame 0xfffffe0020ecc8d0
kern_connectat() at kern_connectat+0x1ff/frame 0xfffffe0020ecc930
sys_connect() at sys_connect+0xd9/frame 0xfffffe0020ecc970
ia32_syscall() at ia32_syscall+0x452/frame 0xfffffe0020eccab0
int0x80_syscall_common() at int0x80_syscall_common+0x9c/frame 0x814247f
KDB: enter: panic
[ thread pid 854 tid 100147 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why