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WARNING: CPU: 0 PID: 10 at net/core/dev.c:10876 unregister_netdevice_many_notify+0x123c/0x17b8 net/core/dev.c:10876
Modules linked in:
CPU: 0 PID: 10 Comm: kworker/u4:0 Not tainted 6.5.0-rc6-syzkaller-gc014c37159a1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: netns cleanup_net
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : unregister_netdevice_many_notify+0x123c/0x17b8 net/core/dev.c:10876
lr : unregister_netdevice_many_notify+0x123c/0x17b8 net/core/dev.c:10876
sp : ffff800092a57760
x29: ffff800092a57900 x28: ffff800092a579c0 x27: ffff800092a57880
x26: dfff800000000000 x25: ffff800092a57860 x24: ffff800092a57840
x23: ffff000125bf0000 x22: ffff800092a57848 x21: ffff000125bf0060
x20: ffff0000c85753c0 x19: ffff000125bf00a0 x18: 1fffe0003683adc6
x17: ffff8000890e6d7c x16: ffff800080516cc4 x15: 0000000000000001
x14: 1ffff0001213ba60 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000
x8 : ffff0000c1999bc0 x7 : ffff8000802f2bf0 x6 : 0000000000000000
x5 : ffff800092a57500 x4 : 0000000000000000 x3 : ffff80008030fed8
x2 : 0000000000000000 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 unregister_netdevice_many_notify+0x123c/0x17b8 net/core/dev.c:10876
 unregister_netdevice_many+0x28/0x38 net/core/dev.c:10906
 ip_tunnel_delete_nets+0x2b4/0x308 net/ipv4/ip_tunnel.c:1144
 ipgre_exit_batch_net+0x30/0x40 net/ipv4/ip_gre.c:1027
 ops_exit_list net/core/net_namespace.c:175 [inline]
 cleanup_net+0x5dc/0x8d0 net/core/net_namespace.c:614
 process_one_work+0x800/0x1480 kernel/workqueue.c:2600
 worker_thread+0x8e0/0xfe8 kernel/workqueue.c:2751
 kthread+0x288/0x310 kernel/kthread.c:389
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:853
irq event stamp: 27750292
hardirqs last  enabled at (27750291): [<ffff80008a658c54>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
hardirqs last  enabled at (27750291): [<ffff80008a658c54>] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194
hardirqs last disabled at (27750292): [<ffff80008a56a65c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:436
softirqs last  enabled at (27750272): [<ffff8000887dcb2c>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last  enabled at (27750272): [<ffff8000887dcb2c>] netif_addr_unlock_bh include/linux/netdevice.h:4536 [inline]
softirqs last  enabled at (27750272): [<ffff8000887dcb2c>] dev_mc_flush+0x1b4/0x1f8 net/core/dev_addr_lists.c:1036
softirqs last disabled at (27750262): [<ffff8000887dd064>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---