IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE
IPv6: NLM_F_CREATE should be set when creating new route
IPv6: NLM_F_CREATE should be set when creating new route
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4956 at drivers/net/netdevsim/fib.c:831 nsim_fib6_event_init drivers/net/netdevsim/fib.c:831 [inline]
WARNING: CPU: 0 PID: 4956 at drivers/net/netdevsim/fib.c:831 nsim_fib6_prepare_event drivers/net/netdevsim/fib.c:947 [inline]
WARNING: CPU: 0 PID: 4956 at drivers/net/netdevsim/fib.c:831 nsim_fib_event_schedule_work drivers/net/netdevsim/fib.c:1003 [inline]
WARNING: CPU: 0 PID: 4956 at drivers/net/netdevsim/fib.c:831 nsim_fib_event_nb+0x3a4/0x474 drivers/net/netdevsim/fib.c:1043
Modules linked in:
CPU: 0 UID: 0 PID: 4956 Comm: syz.0.11462 Not tainted syzkaller #0 PREEMPT 
Hardware name: linux,dummy-virt (DT)
pstate: 61402009 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
pc : nsim_fib6_event_init drivers/net/netdevsim/fib.c:831 [inline]
pc : nsim_fib6_prepare_event drivers/net/netdevsim/fib.c:947 [inline]
pc : nsim_fib_event_schedule_work drivers/net/netdevsim/fib.c:1003 [inline]
pc : nsim_fib_event_nb+0x3a4/0x474 drivers/net/netdevsim/fib.c:1043
lr : kmalloc_noprof include/linux/slab.h:909 [inline]
lr : kmalloc_array_noprof include/linux/slab.h:948 [inline]
lr : nsim_fib6_event_init drivers/net/netdevsim/fib.c:810 [inline]
lr : nsim_fib6_prepare_event drivers/net/netdevsim/fib.c:947 [inline]
lr : nsim_fib_event_schedule_work drivers/net/netdevsim/fib.c:1003 [inline]
lr : nsim_fib_event_nb+0x118/0x474 drivers/net/netdevsim/fib.c:1043
sp : ffff800088b63560
x29: ffff800088b63560 x28: faf0000015571000 x27: 0000000000000001
x26: f8f000001552ff20 x25: fdf0000015571200 x24: 0000000000000000
x23: f6f000000656ac00 x22: f9f000001a91f000 x21: fdf0000015571200
x20: ffff800088b63658 x19: 0000000000000001 x18: 0000000000000001
x17: 0000000000000000 x16: 0000000000000000 x15: fff000007f8d4980
x14: f5f000000ff4b800 x13: 0000000000000001 x12: 0000000000000000
x11: 0000000000000000 x10: ffffffffffffffff x9 : 0000000000000920
x8 : 00000000ffff8000 x7 : dead000000000100 x6 : 000000000000001c
x5 : 0000000000000002 x4 : 0000000000000cc0 x3 : 0000000000000000
x2 : 0000000000000003 x1 : 0000000000000001 x0 : fdf000001557122c
Call trace:
 nsim_fib6_event_init drivers/net/netdevsim/fib.c:831 [inline] (P)
 nsim_fib6_prepare_event drivers/net/netdevsim/fib.c:947 [inline] (P)
 nsim_fib_event_schedule_work drivers/net/netdevsim/fib.c:1003 [inline] (P)
 nsim_fib_event_nb+0x3a4/0x474 drivers/net/netdevsim/fib.c:1043 (P)
 notifier_call_chain kernel/notifier.c:85 [inline]
 atomic_notifier_call_chain+0x60/0x90 kernel/notifier.c:223
 call_fib_notifiers+0x48/0x70 net/core/fib_notifier.c:35
 call_fib6_notifiers+0x18/0x24 net/ipv6/fib6_notifier.c:22
 call_fib6_multipath_entry_notifiers+0x48/0x70 net/ipv6/ip6_fib.c:425
 ip6_route_multipath_add+0x56c/0x7d0 net/ipv6/route.c:5527
 inet6_rtm_newroute+0x74/0xd8 net/ipv6/route.c:5649
 rtnetlink_rcv_msg+0x304/0x398 net/core/rtnetlink.c:6946
 netlink_rcv_skb+0x5c/0x128 net/netlink/af_netlink.c:2552
 rtnetlink_rcv+0x18/0x24 net/core/rtnetlink.c:6973
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x1e4/0x314 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x194/0x3fc net/netlink/af_netlink.c:1896
 sock_sendmsg_nosec net/socket.c:714 [inline]
 __sock_sendmsg+0x54/0x60 net/socket.c:729
 ____sys_sendmsg+0x234/0x29c net/socket.c:2614
 ___sys_sendmsg+0xac/0x100 net/socket.c:2668
 __sys_sendmsg+0x98/0xf8 net/socket.c:2700
 __do_sys_sendmsg net/socket.c:2705 [inline]
 __se_sys_sendmsg net/socket.c:2703 [inline]
 __arm64_sys_sendmsg+0x24/0x30 net/socket.c:2703
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x48/0x110 arch/arm64/kernel/syscall.c:49
 el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x1c/0x28 arch/arm64/kernel/syscall.c:151
 el0_svc+0x34/0x10c arch/arm64/kernel/entry-common.c:879
 el0t_64_sync_handler+0xa0/0xe4 arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x1a4/0x1a8 arch/arm64/kernel/entry.S:596
---[ end trace 0000000000000000 ]---