device bridge_slave_1 left promiscuous mode
bridge0: port 2(bridge_slave_1) entered disabled state
device bridge_slave_0 left promiscuous mode
bridge0: port 1(bridge_slave_0) entered disabled state
======================================================
WARNING: possible circular locking dependency detected
5.8.0-rc2-syzkaller #0 Not tainted
------------------------------------------------------
kworker/u4:13/19485 is trying to acquire lock:
ffff888048bba280 (&macvlan_netdev_addr_lock_key/1){+...}-{2:2}, at: netif_addr_lock_nested include/linux/netdevice.h:4243 [inline]
ffff888048bba280 (&macvlan_netdev_addr_lock_key/1){+...}-{2:2}, at: dev_uc_sync_multiple+0xdc/0x190 net/core/dev_addr_lists.c:670

but task is already holding lock:
ffff88805ec00280 (&dev_addr_list_lock_key/2){+...}-{2:2}, at: netif_addr_lock_nested include/linux/netdevice.h:4243 [inline]
ffff88805ec00280 (&dev_addr_list_lock_key/2){+...}-{2:2}, at: dev_mc_unsync net/core/dev_addr_lists.c:915 [inline]
ffff88805ec00280 (&dev_addr_list_lock_key/2){+...}-{2:2}, at: dev_mc_unsync+0xf4/0x190 net/core/dev_addr_lists.c:909

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (&dev_addr_list_lock_key/2){+...}-{2:2}:
       _raw_spin_lock_nested+0x30/0x40 kernel/locking/spinlock.c:361
       netif_addr_lock_nested include/linux/netdevice.h:4243 [inline]
       dev_uc_sync+0xdc/0x190 net/core/dev_addr_lists.c:640
       macvlan_set_mac_lists+0x55/0x110 drivers/net/macvlan.c:802
       __dev_set_rx_mode+0x1ea/0x300 net/core/dev.c:8207
       dev_set_rx_mode net/core/dev.c:8213 [inline]
       __dev_open+0x321/0x470 net/core/dev.c:1529
       dev_open net/core/dev.c:1557 [inline]
       dev_open+0xe8/0x150 net/core/dev.c:1550
       bond_enslave+0x927/0x48a0 drivers/net/bonding/bond_main.c:1716
       do_set_master+0x1c8/0x220 net/core/rtnetlink.c:2476
       __rtnl_newlink+0x132f/0x1730 net/core/rtnetlink.c:3366
       rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3397
       rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5460
       netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2469
       netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
       netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1329
       netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1918
       sock_sendmsg_nosec net/socket.c:652 [inline]
       sock_sendmsg+0xcf/0x120 net/socket.c:672
       ____sys_sendmsg+0x6e8/0x810 net/socket.c:2352
       ___sys_sendmsg+0xf3/0x170 net/socket.c:2406
       __sys_sendmsg+0xe5/0x1b0 net/socket.c:2439
       do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359
       entry_SYSCALL_64_after_hwframe+0x44/0xa9

-> #0 (&macvlan_netdev_addr_lock_key/1){+...}-{2:2}:
       check_prev_add kernel/locking/lockdep.c:2496 [inline]
       check_prevs_add kernel/locking/lockdep.c:2601 [inline]
       validate_chain kernel/locking/lockdep.c:3218 [inline]
       __lock_acquire+0x2acb/0x56e0 kernel/locking/lockdep.c:4380
       lock_acquire+0x1f1/0xad0 kernel/locking/lockdep.c:4959
       _raw_spin_lock_nested+0x30/0x40 kernel/locking/spinlock.c:361
       netif_addr_lock_nested include/linux/netdevice.h:4243 [inline]
       dev_uc_sync_multiple+0xdc/0x190 net/core/dev_addr_lists.c:670
       bond_set_rx_mode+0x1ae/0x480 drivers/net/bonding/bond_main.c:3848
       __dev_set_rx_mode+0x1ea/0x300 net/core/dev.c:8207
       dev_mc_unsync net/core/dev_addr_lists.c:917 [inline]
       dev_mc_unsync+0x139/0x190 net/core/dev_addr_lists.c:909
       vlan_dev_stop+0x51/0x350 net/8021q/vlan_dev.c:315
       __dev_close_many+0x1b3/0x2e0 net/core/dev.c:1605
       dev_close_many+0x238/0x650 net/core/dev.c:1630
       rollback_registered_many+0x3af/0xf60 net/core/dev.c:8953
       unregister_netdevice_many.part.0+0x1a/0x2f0 net/core/dev.c:10121
       unregister_netdevice_many net/core/dev.c:10120 [inline]
       default_device_exit_batch+0x30c/0x3d0 net/core/dev.c:10604
       ops_exit_list+0x10d/0x160 net/core/net_namespace.c:189
       cleanup_net+0x4ea/0xa00 net/core/net_namespace.c:603
       process_one_work+0x94c/0x1670 kernel/workqueue.c:2269
       worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
       kthread+0x3b5/0x4a0 kernel/kthread.c:291
       ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293

other info that might help us debug this:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&dev_addr_list_lock_key/2);
                               lock(&macvlan_netdev_addr_lock_key/1);
                               lock(&dev_addr_list_lock_key/2);
  lock(&macvlan_netdev_addr_lock_key/1);

 *** DEADLOCK ***

7 locks held by kworker/u4:13/19485:
 #0: ffff8880a97ad138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880a97ad138 ((wq_completion)netns){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
 #0: ffff8880a97ad138 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
 #0: ffff8880a97ad138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
 #0: ffff8880a97ad138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
 #0: ffff8880a97ad138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x82b/0x1670 kernel/workqueue.c:2240
 #1: ffffc90001a67da8 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x85f/0x1670 kernel/workqueue.c:2244
 #2: ffffffff8a7a3270 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9b/0xa00 net/core/net_namespace.c:565
 #3: ffffffff8a7b00e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock_unregistering net/core/dev.c:10557 [inline]
 #3: ffffffff8a7b00e8 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0xea/0x3d0 net/core/dev.c:10595
 #4: ffff88803d9ec280 (&vlan_netdev_addr_lock_key/1){+...}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:358 [inline]
 #4: ffff88803d9ec280 (&vlan_netdev_addr_lock_key/1){+...}-{2:2}, at: netif_addr_lock_bh include/linux/netdevice.h:4248 [inline]
 #4: ffff88803d9ec280 (&vlan_netdev_addr_lock_key/1){+...}-{2:2}, at: dev_mc_unsync net/core/dev_addr_lists.c:914 [inline]
 #4: ffff88803d9ec280 (&vlan_netdev_addr_lock_key/1){+...}-{2:2}, at: dev_mc_unsync+0xb0/0x190 net/core/dev_addr_lists.c:909
 #5: ffff88805ec00280 (&dev_addr_list_lock_key/2){+...}-{2:2}, at: netif_addr_lock_nested include/linux/netdevice.h:4243 [inline]
 #5: ffff88805ec00280 (&dev_addr_list_lock_key/2){+...}-{2:2}, at: dev_mc_unsync net/core/dev_addr_lists.c:915 [inline]
 #5: ffff88805ec00280 (&dev_addr_list_lock_key/2){+...}-{2:2}, at: dev_mc_unsync+0xf4/0x190 net/core/dev_addr_lists.c:909
 #6: ffffffff89bbe640 (rcu_read_lock){....}-{1:2}, at: bond_set_rx_mode+0x0/0x480 drivers/net/bonding/bond_main.c:927

stack backtrace:
CPU: 1 PID: 19485 Comm: kworker/u4:13 Not tainted 5.8.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x18f/0x20d lib/dump_stack.c:118
 check_noncircular+0x324/0x3e0 kernel/locking/lockdep.c:1827
 check_prev_add kernel/locking/lockdep.c:2496 [inline]
 check_prevs_add kernel/locking/lockdep.c:2601 [inline]
 validate_chain kernel/locking/lockdep.c:3218 [inline]
 __lock_acquire+0x2acb/0x56e0 kernel/locking/lockdep.c:4380
 lock_acquire+0x1f1/0xad0 kernel/locking/lockdep.c:4959
 _raw_spin_lock_nested+0x30/0x40 kernel/locking/spinlock.c:361
 netif_addr_lock_nested include/linux/netdevice.h:4243 [inline]
 dev_uc_sync_multiple+0xdc/0x190 net/core/dev_addr_lists.c:670
 bond_set_rx_mode+0x1ae/0x480 drivers/net/bonding/bond_main.c:3848
 __dev_set_rx_mode+0x1ea/0x300 net/core/dev.c:8207
 dev_mc_unsync net/core/dev_addr_lists.c:917 [inline]
 dev_mc_unsync+0x139/0x190 net/core/dev_addr_lists.c:909
 vlan_dev_stop+0x51/0x350 net/8021q/vlan_dev.c:315
 __dev_close_many+0x1b3/0x2e0 net/core/dev.c:1605
 dev_close_many+0x238/0x650 net/core/dev.c:1630
 rollback_registered_many+0x3af/0xf60 net/core/dev.c:8953
 unregister_netdevice_many.part.0+0x1a/0x2f0 net/core/dev.c:10121
 unregister_netdevice_many net/core/dev.c:10120 [inline]
 default_device_exit_batch+0x30c/0x3d0 net/core/dev.c:10604
 ops_exit_list+0x10d/0x160 net/core/net_namespace.c:189
 cleanup_net+0x4ea/0xa00 net/core/net_namespace.c:603
 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
 kthread+0x3b5/0x4a0 kernel/kthread.c:291
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293
device veth1_macvtap left promiscuous mode
device veth0_macvtap left promiscuous mode
device veth1_vlan left promiscuous mode
device veth0_vlan left promiscuous mode
bond14 (unregistering): Released all slaves
bond13 (unregistering): Released all slaves
bond12 (unregistering): (slave bridge31): Releasing backup interface
bond12 (unregistering): Released all slaves
bond11 (unregistering): (slave bridge26): Releasing backup interface
bond11 (unregistering): Released all slaves
bond10 (unregistering): Released all slaves
bond9 (unregistering): (slave bridge22): Releasing active interface
device bridge22 left promiscuous mode
bond9 (unregistering): Released all slaves
bond8 (unregistering): Released all slaves
bond7 (unregistering): (slave veth43): Releasing backup interface
device veth43 left promiscuous mode
bond7 (unregistering): Released all slaves
bond0 (unregistering): (slave macvlan2): Releasing backup interface
bond6 (unregistering): Released all slaves
team0 (unregistering): Port device veth33 removed
team0 (unregistering): Port device veth31 removed
bond5 (unregistering): Released all slaves
bond4 (unregistering): (slave wireguard1): Releasing backup interface
bond4 (unregistering): (slave wireguard0): Releasing backup interface
device wireguard0 left promiscuous mode
bond4 (unregistering): Destroying bond
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 19485 Comm: kworker/u4:13 Not tainted 5.8.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:rollback_registered_many+0x2be/0xf60 net/core/dev.c:8947
Code: 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 0f 85 91 0c 00 00 48 b8 22 01 00 00 00 00 ad de 48 89 43 70 e9 b9 fe ff ff e8 f2 39 3e fb <0f> 0b 4c 8d 7b 68 4c 8d 6b 70 eb a5 e8 e1 39 3e fb 48 8b 74 24 10
RSP: 0018:ffffc90001a676b0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888049454000 RCX: ffffffff86351508
RDX: ffff88804f1b62c0 RSI: ffffffff8635165e RDI: 0000000000000001
RBP: ffffc90001a67770 R08: 0000000000000000 R09: ffffffff8a7b0087
R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff888049454068 R14: ffffc90001a67718 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdc3da07000 CR3: 00000000a6d96000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 rollback_registered net/core/dev.c:9021 [inline]
 unregister_netdevice_queue+0x2dd/0x570 net/core/dev.c:10102
 unregister_netdevice include/linux/netdevice.h:2754 [inline]
 bond_release_and_destroy drivers/net/bonding/bond_main.c:2203 [inline]
 bond_slave_netdev_event drivers/net/bonding/bond_main.c:3276 [inline]
 bond_netdev_event.cold+0xc1/0x10e drivers/net/bonding/bond_main.c:3389
 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83
 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2033
 call_netdevice_notifiers_extack net/core/dev.c:2045 [inline]
 call_netdevice_notifiers net/core/dev.c:2059 [inline]
 rollback_registered_many+0x665/0xf60 net/core/dev.c:8976
 unregister_netdevice_many.part.0+0x1a/0x2f0 net/core/dev.c:10121
 unregister_netdevice_many net/core/dev.c:10120 [inline]
 default_device_exit_batch+0x30c/0x3d0 net/core/dev.c:10604
 ops_exit_list+0x10d/0x160 net/core/net_namespace.c:189
 cleanup_net+0x4ea/0xa00 net/core/net_namespace.c:603
 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
 kthread+0x3b5/0x4a0 kernel/kthread.c:291
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293
Modules linked in:
---[ end trace f2b12f3748d9446b ]---
RIP: 0010:rollback_registered_many+0x2be/0xf60 net/core/dev.c:8947
Code: 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 0f 85 91 0c 00 00 48 b8 22 01 00 00 00 00 ad de 48 89 43 70 e9 b9 fe ff ff e8 f2 39 3e fb <0f> 0b 4c 8d 7b 68 4c 8d 6b 70 eb a5 e8 e1 39 3e fb 48 8b 74 24 10
RSP: 0018:ffffc90001a676b0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888049454000 RCX: ffffffff86351508
RDX: ffff88804f1b62c0 RSI: ffffffff8635165e RDI: 0000000000000001
RBP: ffffc90001a67770 R08: 0000000000000000 R09: ffffffff8a7b0087
R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff888049454068 R14: ffffc90001a67718 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdc3da07000 CR3: 00000000a6d96000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400