------------[ cut here ]------------ WARNING: CPU: 1 PID: 39 at net/core/dev.c:10876 unregister_netdevice_many_notify+0x123c/0x17b8 net/core/dev.c:10876 Modules linked in: CPU: 1 PID: 39 Comm: kworker/u4:2 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 : ffff800092f67760 x29: ffff800092f67900 x28: ffff800092f679c0 x27: ffff800092f67880 x26: dfff800000000000 x25: ffff800092f67860 x24: ffff800092f67840 x23: ffff000121dd0000 x22: ffff800092f67848 x21: ffff000121dd0060 x20: ffff0000d6df7140 x19: ffff000121dd00a0 x18: ffff800092f67360 x17: ffff8000890e6d7c x16: ffff800080516cc4 x15: 0000000000000001 x14: 1ffff0001213ba60 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000 x8 : ffff0000c21d0000 x7 : ffff8000802f2bf0 x6 : 0000000000000000 x5 : ffff800092f67500 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 vti_exit_batch_net+0x30/0x54 net/ipv4/ip_vti.c:515 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: 17579928 hardirqs last enabled at (17579927): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (17579927): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (17579928): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:436 softirqs last enabled at (17579908): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (17579908): [] netif_addr_unlock_bh include/linux/netdevice.h:4536 [inline] softirqs last enabled at (17579908): [] dev_mc_flush+0x1b4/0x1f8 net/core/dev_addr_lists.c:1036 softirqs last disabled at (17579898): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 39 at net/core/dev.c:10876 unregister_netdevice_many_notify+0x123c/0x17b8 net/core/dev.c:10876 Modules linked in: CPU: 1 PID: 39 Comm: kworker/u4:2 Tainted: G W 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 : ffff800092f67760 x29: ffff800092f67900 x28: ffff800092f679c0 x27: ffff800092f67880 x26: dfff800000000000 x25: ffff800092f67860 x24: ffff800092f67840 x23: ffff000121e9a000 x22: ffff800092f67848 x21: ffff000121e9a060 x20: ffff0000d04a2dc0 x19: ffff000121e9a0a0 x18: 1fffe0003683f1c6 x17: ffff80008e09d000 x16: ffff800080516cc4 x15: 0000000000000001 x14: 1ffff0001213ba60 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000 x8 : ffff0000c21d0000 x7 : ffff8000802f2bf0 x6 : 0000000000000000 x5 : ffff800092f67500 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 vti_exit_batch_net+0x30/0x54 net/ipv4/ip_vti.c:515 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: 17583820 hardirqs last enabled at (17583819): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (17583819): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (17583820): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:436 softirqs last enabled at (17583800): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (17583800): [] netif_addr_unlock_bh include/linux/netdevice.h:4536 [inline] softirqs last enabled at (17583800): [] dev_mc_flush+0x1b4/0x1f8 net/core/dev_addr_lists.c:1036 softirqs last disabled at (17583792): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 39 at net/core/dev.c:10876 unregister_netdevice_many_notify+0x123c/0x17b8 net/core/dev.c:10876 Modules linked in: CPU: 1 PID: 39 Comm: kworker/u4:2 Tainted: G W 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 : ffff800092f67760 x29: ffff800092f67900 x28: ffff800092f679c0 x27: ffff800092f67880 x26: dfff800000000000 x25: ffff800092f67860 x24: ffff800092f67840 x23: ffff0000d8b50000 x22: ffff800092f67848 x21: ffff0000d8b50060 x20: ffff0000cc1ce8c0 x19: ffff0000d8b500a0 x18: 1fffe0003683f1c6 x17: ffff80008e09d000 x16: ffff800080516cc4 x15: 0000000000000001 x14: 1ffff0001213ba60 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000 x8 : ffff0000c21d0000 x7 : ffff8000802f2bf0 x6 : 0000000000000000 x5 : ffff800092f67500 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 vti_exit_batch_net+0x30/0x54 net/ipv4/ip_vti.c:515 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: 17586588 hardirqs last enabled at (17586587): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (17586587): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (17586588): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:436 softirqs last enabled at (17586568): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (17586568): [] netif_addr_unlock_bh include/linux/netdevice.h:4536 [inline] softirqs last enabled at (17586568): [] dev_mc_flush+0x1b4/0x1f8 net/core/dev_addr_lists.c:1036 softirqs last disabled at (17586560): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]---