panic: kernel diagnostic assertion "cifp != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/route.c", line 1089
Starting stack trace...
panic(ffffffff833b58bb) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff833f2a4a,ffffffff83371f4d,441,ffffffff8341c73a) at __assert+0x29 sys/kern/subr_prf.c:-1
rt_hash(1,ffff80002a2f9c58,4) at rt_hash
rt_ifa_add(ffff800000c4ac00,840100,ffff800000c4ac68,0) at rt_ifa_add+0x22e sys/net/route.c:1284
in_ifinit(ffff8000015af000,ffff800000c4ac00,ffff80002a2f9f70,1) at in_ifinit+0x4bb in_insert_prefix sys/netinet/in.c:789 [inline]
in_ifinit(ffff8000015af000,ffff800000c4ac00,ffff80002a2f9f70,1) at in_ifinit+0x4bb sys/netinet/in.c:722
in_ioctl_change_ifaddr(8040691a,ffff80002a2f9f60,ffff8000015af000) at in_ioctl_change_ifaddr+0x91c sys/netinet/in.c:523
ifioctl(ffff800010fdfa80,8040691a,ffff80002a2f9f60,ffff80003c408fc0) at ifioctl+0x1714 pru_control sys/sys/protosw.h:353 [inline]
ifioctl(ffff800010fdfa80,8040691a,ffff80002a2f9f60,ffff80003c408fc0) at ifioctl+0x1714 sys/net/if.c:2553
sys_ioctl(ffff80003c408fc0,ffff80002a2fa140,ffff80002a2fa090) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1
syscall(ffff80002a2fa140) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a2fa140) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7c1db51f4d70, count: 247
End of stack trace.