panic: kernel diagnostic assertion "info->rti_ifa->ifa_ifp != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/route.c", line 993
Starting stack trace...
panic(ffffffff83389b4a) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff833c52c9,ffffffff8334af9d,3e1,ffffffff832fc4e0) at __assert+0x29 sys/kern/subr_prf.c:-1
rtrequest(1,ffff8000377e4268,38,ffff8000377e41d0,0) at rtrequest+0xe63 sys/net/route.c:1089
rtm_output(ffff80000153ef00,ffff8000377e4308,ffff8000377e4268,38,0) at 
rtm_output+0x93d
route_output(fffffd805bd98e00,ffff800001557208) at route_output+0x9ef sys/net/rtsock.c:858
route_send(ffff800001557208,fffffd805bd98e00,0,0) at route_send+0xd7 sys/net/rtsock.c:322
sosend(ffff800001557208,0,ffff8000377e44b8,0,0,0) at sosend+0x804 sys/kern/uipc_socket.c:-1
sendit(ffff80002a2702b0,7,ffff8000377e45b0,0,ffff8000377e4660) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785
sys_sendto(ffff80002a2702b0,ffff8000377e4710,ffff8000377e4660) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563
syscall(ffff8000377e4710) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff8000377e4710) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xc5ab3d0a010, count: 246
End of stack trace.