TITLE: Fatal trap NUM: general protection fault in sctp_inpcb_bind

Fatal trap 9: general protection fault while in kernel mode
cpuid = 0; apic id = 00
instruction pointer = 0x20:0xffffffff813441d5
stack pointer         = 0x28:0xfffffe001fa6d770
frame pointer         = 0x28:0xfffffe001fa6d820
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  = 79848 (syz-executor.0)
trap number  = 9
panic: general protection fault
cpuid = 0
time = 17
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe001fa6d440
vpanic() at vpanic+0x1e0/frame 0xfffffe001fa6d4a0
panic() at panic+0x43/frame 0xfffffe001fa6d500
trap_fatal() at trap_fatal+0x4c6/frame 0xfffffe001fa6d580
trap() at trap+0xba/frame 0xfffffe001fa6d6a0
calltrap() at calltrap+0x8/frame 0xfffffe001fa6d6a0
--- trap 0x9, rip = 0xffffffff813441d5, rsp = 0xfffffe001fa6d770, rbp = 0xfffffe001fa6d820 ---
sctp_inpcb_bind() at sctp_inpcb_bind+0x3f5/frame 0xfffffe001fa6d820
sctp_connect() at sctp_connect+0x266/frame 0xfffffe001fa6d880
soconnectat() at soconnectat+0x183/frame 0xfffffe001fa6d8e0
kern_connectat() at kern_connectat+0x1ff/frame 0xfffffe001fa6d940
sys_connect() at sys_connect+0xd9/frame 0xfffffe001fa6d980
amd64_syscall() at amd64_syscall+0x436/frame 0xfffffe001fa6dab0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe001fa6dab0
--- syscall (198, FreeBSD ELF64, nosys), rip = 0x412e5a, rsp = 0x7fffdfffdf38, rbp = 0x3 ---
KDB: enter: panic
[ thread pid 79848 tid 101052 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why
db> 
