------------[ cut here ]------------
WARNING: CPU: 1 PID: 29615 at drivers/net/netdevsim/fib.c:448 nsim_fib6_rt_nh_find drivers/net/netdevsim/fib.c:417 [inline]
WARNING: CPU: 1 PID: 29615 at drivers/net/netdevsim/fib.c:448 nsim_fib6_rt_nh_del+0x149/0x280 drivers/net/netdevsim/fib.c:447
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 29615 Comm: syz-executor.5 Not tainted 5.7.0-rc2-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+0x1e9/0x30e lib/dump_stack.c:118
 panic+0x264/0x7a0 kernel/panic.c:221
 __warn+0x209/0x210 kernel/panic.c:582
 report_bug+0x1ac/0x2d0 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:175 [inline]
 do_error_trap+0xca/0x1c0 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+0x149/0x280 drivers/net/netdevsim/fib.c:417
Code: 05 e8 6b 70 91 fc 4d 89 65 08 4c 89 e0 48 c1 e8 03 80 3c 28 00 74 08 4c 89 e7 e8 52 70 91 fc 4d 89 2c 24 eb 1b e8 67 91 53 fc <0f> 0b 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 51 91 53 fc
RSP: 0018:ffffc9000601ea18 EFLAGS: 00010246
RAX: ffffffff851fd029 RBX: ffff8880902e8538 RCX: 0000000000040000
RDX: ffffc9001442b000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: dffffc0000000000 R08: ffffffff851f6837 R09: fffffbfff12d776d
R10: fffffbfff12d776d R11: 0000000000000000 R12: ffff8880990f1200
R13: ffff8880902e8538 R14: 1ffff1101515d932 R15: ffff8880a8aec990
 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+0x18b3/0x3600 drivers/net/netdevsim/fib.c:772
 notifier_call_chain kernel/notifier.c:83 [inline]
 __atomic_notifier_call_chain+0x18e/0x2e0 kernel/notifier.c:173
 call_fib_notifiers+0x2d/0x60 net/core/fib_notifier.c:35
 fib6_del_route net/ipv6/ip6_fib.c:399 [inline]
 fib6_del+0xf6a/0x13a0 net/ipv6/ip6_fib.c:2017
 fib6_clean_node+0x2ba/0x520 net/ipv6/ip6_fib.c:2179
 fib6_walk_continue+0x65c/0x8e0 net/ipv6/ip6_fib.c:2101
 fib6_walk net/ipv6/ip6_fib.c:2149 [inline]
 fib6_clean_tree net/ipv6/ip6_fib.c:2229 [inline]
 __fib6_clean_all+0x477/0x830 net/ipv6/ip6_fib.c:2245
 rt6_sync_down_dev net/ipv6/route.c:4749 [inline]
 rt6_disable_ip+0x10a/0x5c0 net/ipv6/route.c:4754
 addrconf_ifdown+0xad/0x1690 net/ipv6/addrconf.c:3718
 addrconf_notify+0x407/0x3ad0 net/ipv6/addrconf.c:3643
 notifier_call_chain kernel/notifier.c:83 [inline]
 __raw_notifier_call_chain kernel/notifier.c:361 [inline]
 raw_notifier_call_chain+0xd4/0x170 kernel/notifier.c:368
 __dev_notify_flags+0x253/0x4d0 net/core/dev.c:1948
 dev_change_flags+0xe3/0x190 net/core/dev.c:8220
 do_setlink+0xb17/0x3900 net/core/rtnetlink.c:2598
 rtnl_group_changelink net/core/rtnetlink.c:3117 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3271 [inline]
 rtnl_newlink+0x10b2/0x1c00 net/core/rtnetlink.c:3391
 rtnetlink_rcv_msg+0x889/0xd40 net/core/rtnetlink.c:5454
 netlink_rcv_skb+0x190/0x3a0 net/netlink/af_netlink.c:2469
 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
 netlink_unicast+0x786/0x940 net/netlink/af_netlink.c:1329
 netlink_sendmsg+0xa57/0xd70 net/netlink/af_netlink.c:1918
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg net/socket.c:672 [inline]
 ____sys_sendmsg+0x4f9/0x7c0 net/socket.c:2362
 ___sys_sendmsg net/socket.c:2416 [inline]
 __sys_sendmsg+0x2a6/0x360 net/socket.c:2449
 do_syscall_64+0xf3/0x1b0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x45c829
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:00007f135346bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000500a40 RCX: 000000000045c829
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000009fe R14: 00000000004ccb57 R15: 00007f135346c6d4
Kernel Offset: disabled
Rebooting in 86400 seconds..