syzbot

panic: unhandled af 18
Starting stack trace...
panic(ffffffff833b23dd) at panic+0x1d0 sys/kern/subr_prf.c:229
unhandled_af(12) at unhandled_af+0x1a sys/net/if.c:-1
if_output_tso(ffff800000031858,ffff80002a29ddf0,ffff80000002b5e0,fffffd8071e0abb0,5dc) at if_output_tso+0x22b
ip_output(fffffd806cf77100,0,fffffd806f2c8070,800,0,fffffd806f2c8108,b467c7eddc421d23) at ip_output+0x1231 sys/netinet/ip_output.c:437
tcp_output(ffff8000014358a0) at tcp_output+0x36e3 sys/netinet/tcp_output.c:1087
tcp_send(ffff800010fd0bd0,fffffd806cfcf900,0,0) at tcp_send+0x191 sys/netinet/tcp_usrreq.c:857
sosend(ffff800010fd0bd0,0,ffff80002a29e238,0,0,80) at sosend+0x804 sys/kern/uipc_socket.c:-1
dofilewritev(ffff80002a272540,3,ffff80002a29e238,0,ffff80002a29e2f0) at dofilewritev+0x242 sys/kern/sys_generic.c:380
sys_write(ffff80002a272540,ffff80002a29e3a0,ffff80002a29e2f0) at sys_write+0xa2 sys/kern/sys_generic.c:300
syscall(ffff80002a29e3a0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a29e3a0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x73f0b4eb25e0, count: 246
End of stack trace.