panic: kernel diagnostic assertion "cifp != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/route.c", line 1078
Starting stack trace...
panic(ffffffff830e1ebe) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff8309b1f0,ffffffff830104f3,436,ffffffff83007c05) at __assert+0x29
rtrequest(1,ffff80002a6f6748,4,ffff80002a6f67f0,0) at rtrequest+0xdce sys/net/route.c:1078
rt_ifa_add(ffff800001621400,840100,ffff800001621458,0) at rt_ifa_add+0x22e sys/net/route.c:1273
in_ifinit(ffff8000015a4000,ffff800001621400,ffff80002a6f6a60,1) at in_ifinit+0x4bd in_insert_prefix sys/netinet/in.c:770 [inline]
in_ifinit(ffff8000015a4000,ffff800001621400,ffff80002a6f6a60,1) at in_ifinit+0x4bd sys/netinet/in.c:703
in_ioctl_change_ifaddr(8040691a,ffff80002a6f6a50,ffff8000015a4000) at in_ioctl_change_ifaddr+0x92c sys/netinet/in.c:504
ifioctl(ffff800001688d60,8040691a,ffff80002a6f6a50,ffff800031be9728) at ifioctl+0x1571 pru_control sys/sys/protosw.h:355 [inline]
ifioctl(ffff800001688d60,8040691a,ffff80002a6f6a50,ffff800031be9728) at ifioctl+0x1571 sys/net/if.c:2449
sys_ioctl(ffff800031be9728,ffff80002a6f6c30,ffff80002a6f6b80) at sys_ioctl+0x67c
syscall(ffff80002a6f6c30) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a6f6c30) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7825381285b0, count: 247
End of stack trace.