------------[ cut here ]------------
WARNING: CPU: 1 PID: 23985 at drivers/net/netdevsim/fib.c:448 nsim_fib6_rt_nh_del+0x267/0x330 drivers/net/netdevsim/fib.c:448
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 23985 Comm: syz-executor.0 Not tainted 5.7.0-rc5-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+0x188/0x20d lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x35 kernel/panic.c:582
 report_bug+0x27b/0x2f0 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:175 [inline]
 fixup_bug arch/x86/kernel/traps.c:170 [inline]
 do_error_trap+0x12b/0x220 arch/x86/kernel/traps.c:267
 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:nsim_fib6_rt_nh_del+0x267/0x330 drivers/net/netdevsim/fib.c:448
Code: e8 7e 26 79 fc 85 db 74 32 e8 05 25 79 fc 48 89 ef e8 2d 27 b7 fc 5b 5d 41 5c 41 5d 41 5e 41 5f e9 ee 24 79 fc e8 e9 24 79 fc <0f> 0b 5b 5d 41 5c 41 5d 41 5e 41 5f e9 d8 24 79 fc e8 d3 24 79 fc
RSP: 0018:ffffc900019a6488 EFLAGS: 00010246
RAX: 0000000000040000 RBX: dffffc0000000000 RCX: ffffc9000232a000
RDX: 0000000000040000 RSI: ffffffff84fa0dc7 RDI: ffff88805c460500
RBP: ffff88805c460538 R08: ffff88805ef32440 R09: fffffbfff15146f1
R10: ffffc900019a64c0 R11: fffffbfff15146f0 R12: ffff88809fd905d0
R13: ffff88809b4ba000 R14: ffff88805c460538 R15: ffff88805c460500
 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+0x14bb/0x24e0 drivers/net/netdevsim/fib.c:772
 notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
 __atomic_notifier_call_chain+0x95/0x180 kernel/notifier.c:173
 call_fib_notifiers+0x166/0x290 net/core/fib_notifier.c:35
 call_fib6_entry_notifiers+0xfb/0x150 net/ipv6/ip6_fib.c:399
 fib6_del_route net/ipv6/ip6_fib.c:1981 [inline]
 fib6_del+0xe63/0x14c0 net/ipv6/ip6_fib.c:2017
 fib6_clean_node+0x39b/0x570 net/ipv6/ip6_fib.c:2179
 fib6_walk_continue+0x4aa/0x8e0 net/ipv6/ip6_fib.c:2101
 fib6_walk+0x91/0xf0 net/ipv6/ip6_fib.c:2149
 fib6_clean_tree+0xdb/0x120 net/ipv6/ip6_fib.c:2229
 __fib6_clean_all+0x118/0x2a0 net/ipv6/ip6_fib.c:2245
 rt6_sync_down_dev+0x12a/0x150 net/ipv6/route.c:4782
 rt6_disable_ip+0x24/0x460 net/ipv6/route.c:4787
 addrconf_ifdown+0x9d/0x12f0 net/ipv6/addrconf.c:3692
 addrconf_notify+0x5a6/0x2270 net/ipv6/addrconf.c:3617
 notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
 call_netdevice_notifiers_info net/core/dev.c:2016 [inline]
 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2001
 call_netdevice_notifiers_extack net/core/dev.c:2028 [inline]
 call_netdevice_notifiers net/core/dev.c:2042 [inline]
 __dev_notify_flags+0x1e9/0x2c0 net/core/dev.c:8283
 dev_change_flags+0x100/0x160 net/core/dev.c:8319
 do_setlink+0xa1c/0x3680 net/core/rtnetlink.c:2605
 __rtnl_newlink+0xad5/0x1590 net/core/rtnetlink.c:3273
 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3398
 rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5461
 netlink_rcv_skb+0x15a/0x410 net/netlink/af_netlink.c:2469
 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
 netlink_unicast+0x537/0x740 net/netlink/af_netlink.c:1329
 netlink_sendmsg+0x882/0xe10 net/netlink/af_netlink.c:1918
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:672
 ____sys_sendmsg+0x6e6/0x810 net/socket.c:2352
 ___sys_sendmsg+0x100/0x170 net/socket.c:2406
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2439
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x45ca29
Code: 0d b7 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 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f0566ca4c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000500d80 RCX: 000000000045ca29
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000007
RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000009fd R14: 00000000004ccd59 R15: 00007f0566ca56d4
Kernel Offset: disabled
Rebooting in 86400 seconds..