panic: kernel diagnostic assertion "cifp != NULL" failed: file "/syzkaller/managers/main/kernel/sys/net/route.c", line 1085
Starting stack trace...
panic(ffffffff83403b4e) at panic+0x1ba sys/kern/subr_prf.c:229
__assert(ffffffff833b596d,ffffffff8335967e,43d,ffffffff833163d1) at __assert+0x29
rtrequest(1,ffff80002a8c4ea8,4,ffff80002a8c4f78,0) at rtrequest+0xf4d sys/net/route.c:1085
rt_ifa_add(ffff8000015a2200,840100,ffff8000015a2258,0) at rt_ifa_add+0x38d sys/net/route.c:1280
in_ifinit(ffff800001447000,ffff8000015a2200,ffff8000015a2258,1) at in_ifinit+0x4bd in_insert_prefix sys/netinet/in.c:770 [inline]
in_ifinit(ffff800001447000,ffff8000015a2200,ffff8000015a2258,1) at in_ifinit+0x4bd sys/netinet/in.c:703
in_ioctl_change_ifaddr(8040691a,ffff80002a8c51e0,ffff800001447000) at in_ioctl_change_ifaddr+0x92c sys/netinet/in.c:504
ifioctl(ffff800001483920,8040691a,ffff80002a8c51e0,ffff80003c9a7220) at ifioctl+0x1519 pru_control sys/sys/protosw.h:351 [inline]
ifioctl(ffff800001483920,8040691a,ffff80002a8c51e0,ffff80003c9a7220) at ifioctl+0x1519 sys/net/if.c:2448
sys_ioctl(ffff80003c9a7220,ffff80002a8c53c0,ffff80002a8c5310) at sys_ioctl+0x5bf
syscall(ffff80002a8c53c0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9bf343de6c0, count: 247
End of stack trace.