------------[ cut here ]------------
WARNING: CPU: 1 PID: 31156 at drivers/net/netdevsim/fib.c:448 nsim_fib6_rt_nh_find drivers/net/netdevsim/fib.c:417 [inline]
WARNING: CPU: 1 PID: 31156 at drivers/net/netdevsim/fib.c:448 nsim_fib6_rt_nh_del+0x154/0x290 drivers/net/netdevsim/fib.c:447
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 31156 Comm: syz-executor.4 Not tainted 5.9.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1f0/0x31e lib/dump_stack.c:118
 panic+0x264/0x7a0 kernel/panic.c:231
 __warn+0x227/0x250 kernel/panic.c:600
 report_bug+0x1b1/0x2e0 lib/bug.c:198
 handle_bug+0x42/0x80 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
RIP: 0010:nsim_fib6_rt_nh_del+0x154/0x290 drivers/net/netdevsim/fib.c:417
Code: 87 fc 4d 89 2c 24 4c 89 e8 48 c1 e8 03 80 3c 28 00 74 08 4c 89 ef e8 5b 41 87 fc 48 8b 04 24 49 89 45 00 eb 1b e8 bc 68 47 fc <0f> 0b 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 a6 68 47 fc
RSP: 0018:ffffc900053b6a38 EFLAGS: 00010246
RAX: ffffffff852d8f64 RBX: ffff88809de20038 RCX: 0000000000040000
RDX: ffffc900117d1000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: dffffc0000000000 R08: ffffffff852d26d7 R09: fffffbfff131e1f6
R10: fffffbfff131e1f6 R11: 0000000000000000 R12: ffff88809567da00
R13: ffff88809de20038 R14: 1ffff11014f3eb3a R15: ffff8880a79f59d0
 nsim_fib6_rt_remove drivers/net/netdevsim/fib.c:688 [inline]
 nsim_fib6_event drivers/net/netdevsim/fib.c:725 [inline]
 nsim_fib_event drivers/net/netdevsim/fib.c:744 [inline]
 nsim_fib_event_nb+0x18b1/0x3680 drivers/net/netdevsim/fib.c:772
 notifier_call_chain kernel/notifier.c:83 [inline]
 __atomic_notifier_call_chain+0x17f/0x2c0 kernel/notifier.c:173
 call_fib_notifiers+0x2d/0x60 net/core/fib_notifier.c:35
 fib6_del_route net/ipv6/ip6_fib.c:400 [inline]
 fib6_del+0xf24/0x1360 net/ipv6/ip6_fib.c:2018
 fib6_clean_node+0x2ba/0x520 net/ipv6/ip6_fib.c:2180
 fib6_walk_continue+0x65c/0x8e0 net/ipv6/ip6_fib.c:2102
 fib6_walk net/ipv6/ip6_fib.c:2150 [inline]
 fib6_clean_tree net/ipv6/ip6_fib.c:2230 [inline]
 __fib6_clean_all+0x3f3/0x730 net/ipv6/ip6_fib.c:2246
 rt6_sync_down_dev net/ipv6/route.c:4779 [inline]
 rt6_disable_ip+0x10a/0x5c0 net/ipv6/route.c:4784
 addrconf_ifdown+0x9f/0x1670 net/ipv6/addrconf.c:3716
 addrconf_notify+0x3f9/0x3a60 net/ipv6/addrconf.c:3641
 notifier_call_chain kernel/notifier.c:83 [inline]
 __raw_notifier_call_chain kernel/notifier.c:361 [inline]
 raw_notifier_call_chain+0xe7/0x170 kernel/notifier.c:368
 __dev_notify_flags+0x253/0x4d0 net/core/dev.c:2033
 dev_change_flags+0xe3/0x190 net/core/dev.c:8360
 do_setlink+0xb0c/0x3be0 net/core/rtnetlink.c:2706
 rtnl_group_changelink net/core/rtnetlink.c:3225 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3379 [inline]
 rtnl_newlink+0x10b2/0x1c10 net/core/rtnetlink.c:3500
 rtnetlink_rcv_msg+0x889/0xd40 net/core/rtnetlink.c:5563
 netlink_rcv_skb+0x190/0x3a0 net/netlink/af_netlink.c:2470
 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
 netlink_unicast+0x786/0x940 net/netlink/af_netlink.c:1330
 netlink_sendmsg+0xa57/0xd70 net/netlink/af_netlink.c:1919
 sock_sendmsg_nosec net/socket.c:651 [inline]
 sock_sendmsg net/socket.c:671 [inline]
 ____sys_sendmsg+0x519/0x800 net/socket.c:2353
 ___sys_sendmsg net/socket.c:2407 [inline]
 __sys_sendmsg+0x2b1/0x360 net/socket.c:2440
 do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45d4d9
Code: 5d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f5acd76dc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000002cd80 RCX: 000000000045d4d9
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000004
RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c
R13: 00007ffc81fece8f R14: 00007f5acd76e9c0 R15: 000000000118cf4c
Kernel Offset: disabled
Rebooting in 86400 seconds..