------------[ cut here ]------------
WARNING: CPU: 1 PID: 1124 at kernel/sched/fair.c:5337 place_entity+0x463/0x520 kernel/sched/fair.c:5337
Modules linked in:
CPU: 1 UID: 0 PID: 1124 Comm: kworker/u8:5 Not tainted 6.11.0-rc4-next-20240820-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue:  cleanup_net
RIP: 0010:place_entity+0x463/0x520 kernel/sched/fair.c:5337
Code: 27 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 48 8b 3c 24 4c 89 fe e8 77 14 00 00 48 89 04 24 e9 e0 fd ff ff 90 <0f> 0b 90 41 bd 01 00 00 00 e9 22 ff ff ff 89 d9 80 e1 07 38 c1 0f
RSP: 0018:ffffc90000a18a10 EFLAGS: 00010046
RAX: 0000000043e3e400 RBX: 000000000010f8f9 RCX: 0000000000100000
RDX: 0000000000000400 RSI: ffff88801f5f3c80 RDI: ffff88801f5f3d00
RBP: dffffc0000000000 R08: ffff888074290487 R09: 1ffff1100e852090
R10: dffffc0000000000 R11: ffffed100e852091 R12: 00000000115f509e
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88801f5f3c80
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020096000 CR3: 000000001fc7c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 enqueue_entity+0x271/0x1920 kernel/sched/fair.c:5409
 enqueue_task_fair+0x206/0xe30 kernel/sched/fair.c:6985
 enqueue_task+0x1a5/0x300 kernel/sched/core.c:2014
 activate_task kernel/sched/core.c:2056 [inline]
 ttwu_do_activate+0x1d1/0x7e0 kernel/sched/core.c:3665
 ttwu_queue kernel/sched/core.c:3940 [inline]
 try_to_wake_up+0x8bc/0x1480 kernel/sched/core.c:4266
 hrtimer_wakeup+0x62/0x80 kernel/time/hrtimer.c:1927
 __run_hrtimer kernel/time/hrtimer.c:1691 [inline]
 __hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1755
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1817
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1026 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1043
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1037
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0xaad/0xfd0 kernel/printk/printk.c:3055
Code: ff ff e8 26 b0 1f 00 90 0f 0b 90 e9 d8 f8 ff ff e8 18 b0 1f 00 e8 f3 4e 47 0a 4d 85 f6 74 b6 e8 09 b0 1f 00 fb 48 8b 44 24 70 <42> 0f b6 04 38 84 c0 48 8b 7c 24 30 0f 85 22 02 00 00 0f b6 1f 31
RSP: 0018:ffffc90004416980 EFLAGS: 00000293
RAX: 1ffff92000882d7c RBX: 0000000000000000 RCX: ffff888022f1bc00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90004416b30 R08: ffffffff81741044 R09: 1ffffffff26ebd00
R10: dffffc0000000000 R11: fffffbfff26ebd01 R12: ffffffff8f13d138
R13: ffffffff8f13d0e0 R14: 0000000000000200 R15: dffffc0000000000
 console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3118
 vprintk_emit+0x5dc/0x7c0 kernel/printk/printk.c:2348
 dev_vprintk_emit+0x2ae/0x330 drivers/base/core.c:4921
 dev_printk_emit+0xdd/0x120 drivers/base/core.c:4932
 __netdev_printk+0x3e0/0x4d0 net/core/dev.c:11762
 netdev_info+0x122/0x170 net/core/dev.c:11817
 nsim_udp_tunnel_unset_port+0x2f3/0x590 drivers/net/netdevsim/udp_tunnels.c:64
 udp_tunnel_nic_device_sync_by_port net/ipv4/udp_tunnel_nic.c:246 [inline]
 __udp_tunnel_nic_device_sync+0xa1f/0x1380 net/ipv4/udp_tunnel_nic.c:289
 udp_tunnel_nic_flush+0x4e5/0xa00 net/ipv4/udp_tunnel_nic.c:670
 udp_tunnel_nic_unregister net/ipv4/udp_tunnel_nic.c:864 [inline]
 udp_tunnel_nic_netdevice_event+0xafb/0x12f0 net/ipv4/udp_tunnel_nic.c:904
 notifier_call_chain+0x19f/0x3e0 kernel/notifier.c:93
 call_netdevice_notifiers_extack net/core/dev.c:2032 [inline]
 call_netdevice_notifiers net/core/dev.c:2046 [inline]
 unregister_netdevice_many_notify+0xd81/0x1c40 net/core/dev.c:11352
 unregister_netdevice_many net/core/dev.c:11414 [inline]
 unregister_netdevice_queue+0x303/0x370 net/core/dev.c:11289
 unregister_netdevice include/linux/netdevice.h:3097 [inline]
 nsim_destroy+0x180/0x5c0 drivers/net/netdevsim/netdev.c:778
 __nsim_dev_port_del+0x14b/0x1b0 drivers/net/netdevsim/dev.c:1425
 nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1437 [inline]
 nsim_dev_reload_destroy+0x28a/0x490 drivers/net/netdevsim/dev.c:1658
 nsim_dev_reload_down+0x98/0xd0 drivers/net/netdevsim/dev.c:965
 devlink_reload+0x18b/0x870 net/devlink/dev.c:461
 devlink_pernet_pre_exit+0x1f3/0x440 net/devlink/core.c:509
 ops_pre_exit_list net/core/net_namespace.c:163 [inline]
 cleanup_net+0x615/0xcc0 net/core/net_namespace.c:606
 process_one_work kernel/workqueue.c:3232 [inline]
 process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3313
 worker_thread+0x86d/0xd10 kernel/workqueue.c:3390
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	e8 26 b0 1f 00       	call   0x1fb02b
   5:	90                   	nop
   6:	0f 0b                	ud2
   8:	90                   	nop
   9:	e9 d8 f8 ff ff       	jmp    0xfffff8e6
   e:	e8 18 b0 1f 00       	call   0x1fb02b
  13:	e8 f3 4e 47 0a       	call   0xa474f0b
  18:	4d 85 f6             	test   %r14,%r14
  1b:	74 b6                	je     0xffffffd3
  1d:	e8 09 b0 1f 00       	call   0x1fb02b
  22:	fb                   	sti
  23:	48 8b 44 24 70       	mov    0x70(%rsp),%rax
* 28:	42 0f b6 04 38       	movzbl (%rax,%r15,1),%eax <-- trapping instruction
  2d:	84 c0                	test   %al,%al
  2f:	48 8b 7c 24 30       	mov    0x30(%rsp),%rdi
  34:	0f 85 22 02 00 00    	jne    0x25c
  3a:	0f b6 1f             	movzbl (%rdi),%ebx
  3d:	31                   	.byte 0x31