panic: kernel diagnostic assertion "cifp != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/route.c", line 1078
Starting stack trace...
panic(ffffffff830e2e84) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff8309aa2a,ffffffff8300e31a,436,ffffffff830057b7) at __assert+0x29
rtrequest(1,ffff8000371b71b8,4,ffff8000371b7260,0) at rtrequest+0xdce sys/net/route.c:1078
rt_ifa_add(ffff8000013f4600,840100,ffff8000013f4658,0) at rt_ifa_add+0x22e sys/net/route.c:1273
in_ifinit(ffff80000128e000,ffff8000013f4600,ffff8000371b74d0,1) at in_ifinit+0x4bd in_insert_prefix sys/netinet/in.c:770 [inline]
in_ifinit(ffff80000128e000,ffff8000013f4600,ffff8000371b74d0,1) at in_ifinit+0x4bd sys/netinet/in.c:703
in_ioctl_change_ifaddr(8040691a,ffff8000371b74c0,ffff80000128e000) at in_ioctl_change_ifaddr+0x92c sys/netinet/in.c:504
ifioctl(ffff8000012db798,8040691a,ffff8000371b74c0,ffff8000ffff2a40) at ifioctl+0x1571 pru_control sys/sys/protosw.h:355 [inline]
ifioctl(ffff8000012db798,8040691a,ffff8000371b74c0,ffff8000ffff2a40) at ifioctl+0x1571 sys/net/if.c:2449
sys_ioctl(ffff8000ffff2a40,ffff8000371b76a0,ffff8000371b75f0) at sys_ioctl+0x67c
syscall(ffff8000371b76a0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff8000371b76a0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f01a1990690, count: 247
End of stack trace.