: left promiscuous mode ------------[ cut here ]------------ WARNING: CPU: 1 PID: 12645 at net/core/dev.c:10876 unregister_netdevice_many_notify+0x13bc/0x1890 Modules linked in: CPU: 1 PID: 12645 Comm: kworker/u4:0 Not tainted 6.5.0-rc6-syzkaller-00027-g91aa6c412d7f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 Workqueue: netns cleanup_net RIP: 0010:unregister_netdevice_many_notify+0x13bc/0x1890 net/core/dev.c:10876 Code: fa c7 3a f9 48 8b 4c 24 28 48 8b 09 4c 39 f1 0f 84 18 01 00 00 48 89 cb e8 d1 f5 e1 f8 48 89 d9 e9 8f f5 ff ff e8 c4 f5 e1 f8 <0f> 0b e9 4b ff ff ff e8 b8 f5 e1 f8 0f 0b eb 9b e8 af f5 e1 f8 c6 RSP: 0018:ffffc900065c7880 EFLAGS: 00010293 RAX: ffffffff88a9c26c RBX: ffff8880930360a0 RCX: ffff88802093bb80 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc900065c7a50 R08: ffffffff88a9c171 R09: 1ffffffff1c97694 R10: dffffc0000000000 R11: fffffbfff1c97695 R12: ffff888093036000 R13: ffff88803d870d90 R14: ffffc900065c7ac0 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c000d23f28 CR3: 0000000042e5b000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ip_tunnel_delete_nets+0x2f1/0x340 net/ipv4/ip_tunnel.c:1144 ops_exit_list net/core/net_namespace.c:175 [inline] cleanup_net+0x767/0xb80 net/core/net_namespace.c:614 process_one_work+0x92c/0x12c0 kernel/workqueue.c:2600 worker_thread+0xa63/0x1210 kernel/workqueue.c:2751 kthread+0x2b8/0x350 kernel/kthread.c:389 ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304