panic: kernel diagnostic assertion "cifp != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/route.c", line 1078
Starting stack trace...
panic(ffffffff830e6e76) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff8309ab31,ffffffff83014e07,436,ffffffff8300bcd3) at __assert+0x29
rtrequest(1,ffff8000329998b8,4,ffff800032999960,0) at rtrequest+0xdce sys/net/route.c:1078
rt_ifa_add(ffff800001615400,840100,ffff800001615458,0) at rt_ifa_add+0x22e sys/net/route.c:1273
in_ifinit(ffff8000015b3000,ffff800001615400,ffff800032999bd0,1) at in_ifinit+0x4bd in_insert_prefix sys/netinet/in.c:770 [inline]
in_ifinit(ffff8000015b3000,ffff800001615400,ffff800032999bd0,1) at in_ifinit+0x4bd sys/netinet/in.c:703
in_ioctl_change_ifaddr(8040691a,ffff800032999bc0,ffff8000015b3000) at in_ioctl_change_ifaddr+0x92c sys/netinet/in.c:504
ifioctl(ffff800001587a00,8040691a,ffff800032999bc0,ffff8000ffff42b0) at ifioctl+0x1571 pru_control sys/sys/protosw.h:355 [inline]
ifioctl(ffff800001587a00,8040691a,ffff800032999bc0,ffff8000ffff42b0) at ifioctl+0x1571 sys/net/if.c:2449
sys_ioctl(ffff8000ffff42b0,ffff800032999da0,ffff800032999cf0) at sys_ioctl+0x67c
syscall(ffff800032999da0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff800032999da0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x79fc1d4a4ec0, count: 247
End of stack trace.