panic: malformed IPv4 option passed to ip_optcopy
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*332257  16545      0           0  0x4000000    0  syz-executor0
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:399
panic() at panic+0x147 sys/kern/subr_prf.c:208
ip_fragment(3895427413aee436,ffffff0034c83100,ffff800000171290) at ip_fragment+0x551
ip_output(8f84c1e945569fe3,ffffff0034c83d00,ffffff0034c83d00,0,ffffff0036f22af0,ffffff003634ca88) at ip_output+0xc06 sys/netinet/ip_output.c:501
udp_output(55372bdb161664af,e7b,ffffff003634ca88,0) at udp_output+0x444 sys/netinet/udp_usrreq.c:1004
sosend(c1552e97a18a1d94,ffffff0030a31e98,ffff800014a82668,ffff800014a827a0,1585,0) at sosend+0x46c sys/kern/uipc_socket.c:513
dofilewritev(7f71275bac9e4f78,0,9,ffff8000ffff8bc0,ffff800014a827a0) at dofilewritev+0x148 sys/kern/sys_generic.c:364
sys_writev(c3cdc5c801f9a1e8,ffff800014a82840,ffff8000ffff8bc0) at sys_writev+0xdb sys/kern/sys_generic.c:310
syscall(989b5ebf6428faf5) at syscall+0x3de
Xsyscall(6,0,d,0,3,aa2db1ca010) at Xsyscall+0x128
end of kernel
end trace frame: 0xaa4e5d92e50, count: 5
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