panic: kernel diagnostic assertion "cifp != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/route.c", line 1078
Starting stack trace...
panic(ffffffff830e28f3) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff8309aac0,ffffffff83015c9a,436,ffffffff8300c9ec) at __assert+0x29
rtrequest(1,ffff80002a154148,4,ffff80002a1541f0,0) at rtrequest+0xdce sys/net/route.c:1078
rt_ifa_add(ffff80000161a900,840100,ffff80000161a958,0) at rt_ifa_add+0x22e sys/net/route.c:1273
in_ifinit(ffff800001597000,ffff80000161a900,ffff80002a154460,1) at in_ifinit+0x4bd in_insert_prefix sys/netinet/in.c:770 [inline]
in_ifinit(ffff800001597000,ffff80000161a900,ffff80002a154460,1) at in_ifinit+0x4bd sys/netinet/in.c:703
in_ioctl_change_ifaddr(8040691a,ffff80002a154450,ffff800001597000) at in_ioctl_change_ifaddr+0x92c sys/netinet/in.c:504
ifioctl(ffff800001589a00,8040691a,ffff80002a154450,ffff80002a0507b0) at ifioctl+0x1571 pru_control sys/sys/protosw.h:355 [inline]
ifioctl(ffff800001589a00,8040691a,ffff80002a154450,ffff80002a0507b0) at ifioctl+0x1571 sys/net/if.c:2449
sys_ioctl(ffff80002a0507b0,ffff80002a154630,ffff80002a154580) at sys_ioctl+0x67c
syscall(ffff80002a154630) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a154630) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x794a2f6d6830, count: 247
End of stack trace.