panic: malformed IPv4 option passed to ip_optcopy
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
 195007  94160      0           0          0    0  syz-executor1
* 43794  94160      0           0  0x4000000    1K syz-executor1
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(35c501af049f9145,ffffff006d6d78b0,ffff800000173290) at ip_fragment+0x625
ip_output(6ed3a5a796aeb267,ffffff006f30c578,ffffff0064d9e900,0,ffffff0064d9e900,ffffff006e725908) at ip_output+0xc8d sys/netinet/ip_output.c:501
udp_output(328c3182712fd3c6,110f,ffffff006e725908,0) at udp_output+0x45a sys/netinet/udp_usrreq.c:1004
sosend(8a6411b86740832b,ffffff007c736270,ffff800021171b68,ffff800021171ca0,12f1,0) at sosend+0x477 sys/kern/uipc_socket.c:513
dofilewritev(5ed14b551758824f,0,5,ffff80002108abd0,ffff800021171ca0) at dofilewritev+0x148 sys/kern/sys_generic.c:364
sys_writev(90d714e839d096a6,790,ffff80002108abd0) at sys_writev+0xdb sys/kern/sys_generic.c:310
syscall(d76f0cc6a2ec793f) at syscall+0x473 mi_syscall sys/sys/syscall_mi.h:99 [inline]
syscall(d76f0cc6a2ec793f) at syscall+0x473 sys/arch/amd64/amd64/trap.c:583
Xsyscall(6,0,d,0,3,e691b72f0d8) at Xsyscall+0x128
end of kernel
end trace frame: 0xe6bca461cd0, count: 5
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