panic: kernel diagnostic assertion "cifp != NULL" failed: file "/syzkaller/managers/main/kernel/sys/net/route.c", line 1078
Starting stack trace...
panic(ffffffff830ae8ce) at panic+0x1ba sys/kern/subr_prf.c:229
__assert(ffffffff8306727f,ffffffff830178a7,436,ffffffff82fdb620) at __assert+0x29
rtrequest(1,ffff80002a5239f8,4,ffff80002a523ac8,0) at rtrequest+0xf4d sys/net/route.c:1078
rt_ifa_add(ffff800001600700,840100,ffff800001600758,0) at rt_ifa_add+0x38d sys/net/route.c:1273
in_ifinit(ffff80000155e000,ffff800001600700,ffff80002a523d40,1) at in_ifinit+0x4bd in_insert_prefix sys/netinet/in.c:770 [inline]
in_ifinit(ffff80000155e000,ffff800001600700,ffff80002a523d40,1) at in_ifinit+0x4bd sys/netinet/in.c:703
in_ioctl_change_ifaddr(8040691a,ffff80002a523d30,ffff80000155e000) at in_ioctl_change_ifaddr+0x92c sys/netinet/in.c:504
ifioctl(fffffd806da46600,8040691a,ffff80002a523d30,ffff80002a4e2ce0) at ifioctl+0x1519 pru_control sys/sys/protosw.h:355 [inline]
ifioctl(fffffd806da46600,8040691a,ffff80002a523d30,ffff80002a4e2ce0) at ifioctl+0x1519 sys/net/if.c:2449
sys_ioctl(ffff80002a4e2ce0,ffff80002a523f10,ffff80002a523e60) at sys_ioctl+0x678
syscall(ffff80002a523f10) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7c23c6f52080, count: 247
End of stack trace.