team0: left allmulticast mode C: left allmulticast mode team_slave_1: left allmulticast mode bond0: left allmulticast mode bond_slave_0: left allmulticast mode bond_slave_1: left allmulticast mode BUG: sleeping function called from invalid context at kernel/locking/mutex.c:578 in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 747, name: kworker/u8:5 preempt_count: 0, expected: 0 RCU nest depth: 1, expected: 0 5 locks held by kworker/u8:5/747: #0: ffff88801aef6148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline] #0: ffff88801aef6148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x9b1/0x17a0 kernel/workqueue.c:3319 #1: ffffc9000311fc60 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline] #1: ffffc9000311fc60 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x9ec/0x17a0 kernel/workqueue.c:3319 #2: ffffffff8f2e62d0 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x145/0xbd0 net/core/net_namespace.c:608 #3: ffffffff8f2f2e08 (rtnl_mutex){+.+.}-{4:4}, at: cleanup_net+0x611/0xbd0 net/core/net_namespace.c:644 #4: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #4: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #4: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: team_change_rx_flags+0x29/0x330 drivers/net/team/team_core.c:1781 CPU: 0 UID: 0 PID: 747 Comm: kworker/u8:5 Not tainted 6.15.0-rc3-syzkaller-gf2858f308131 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 Workqueue: netns cleanup_net Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 __might_resched+0x495/0x610 kernel/sched/core.c:8818 __mutex_lock_common kernel/locking/mutex.c:578 [inline] __mutex_lock+0x106/0xe80 kernel/locking/mutex.c:746 netdev_lock include/linux/netdevice.h:2751 [inline] netdev_lock_ops include/net/netdev_lock.h:42 [inline] dev_set_allmulti+0x10e/0x260 net/core/dev_api.c:288 bond_set_allmulti drivers/net/bonding/bond_main.c:945 [inline] bond_change_rx_flags+0x4cd/0x690 drivers/net/bonding/bond_main.c:4736 dev_change_rx_flags net/core/dev.c:9145 [inline] netif_set_allmulti+0x20f/0x380 net/core/dev.c:9247 dev_set_allmulti+0x12b/0x260 net/core/dev_api.c:289 team_change_rx_flags+0x20f/0x330 drivers/net/team/team_core.c:1789 dev_change_rx_flags net/core/dev.c:9145 [inline] netif_set_allmulti+0x20f/0x380 net/core/dev.c:9247 dev_set_allmulti+0x12b/0x260 net/core/dev_api.c:289 nbp_delete_promisc net/bridge/br_if.c:252 [inline] del_nbp+0xae/0xa60 net/bridge/br_if.c:340 br_dev_delete+0x6e/0x100 net/bridge/br_if.c:386 br_net_exit_batch_rtnl+0xfc/0x1a0 net/bridge/br.c:376 cleanup_net+0x664/0xbd0 net/core/net_namespace.c:647 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 ============================= [ BUG: Invalid wait context ] 6.15.0-rc3-syzkaller-gf2858f308131 #0 Tainted: G W ----------------------------- kworker/u8:5/747 is trying to lock: ffff88805b14cd30 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2751 [inline] ffff88805b14cd30 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock_ops include/net/netdev_lock.h:42 [inline] ffff88805b14cd30 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: dev_set_allmulti+0x10e/0x260 net/core/dev_api.c:288 other info that might help us debug this: context-{5:5} 5 locks held by kworker/u8:5/747: #0: ffff88801aef6148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline] #0: ffff88801aef6148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x9b1/0x17a0 kernel/workqueue.c:3319 #1: ffffc9000311fc60 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline] #1: ffffc9000311fc60 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x9ec/0x17a0 kernel/workqueue.c:3319 #2: ffffffff8f2e62d0 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x145/0xbd0 net/core/net_namespace.c:608 #3: ffffffff8f2f2e08 (rtnl_mutex){+.+.}-{4:4}, at: cleanup_net+0x611/0xbd0 net/core/net_namespace.c:644 #4: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #4: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #4: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: team_change_rx_flags+0x29/0x330 drivers/net/team/team_core.c:1781 stack backtrace: CPU: 0 UID: 0 PID: 747 Comm: kworker/u8:5 Tainted: G W 6.15.0-rc3-syzkaller-gf2858f308131 #0 PREEMPT(full) Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 Workqueue: netns cleanup_net Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_lock_invalid_wait_context kernel/locking/lockdep.c:4831 [inline] check_wait_context kernel/locking/lockdep.c:4903 [inline] __lock_acquire+0xbcf/0xd20 kernel/locking/lockdep.c:5185 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5866 __mutex_lock_common kernel/locking/mutex.c:601 [inline] __mutex_lock+0x182/0xe80 kernel/locking/mutex.c:746 netdev_lock include/linux/netdevice.h:2751 [inline] netdev_lock_ops include/net/netdev_lock.h:42 [inline] dev_set_allmulti+0x10e/0x260 net/core/dev_api.c:288 bond_set_allmulti drivers/net/bonding/bond_main.c:945 [inline] bond_change_rx_flags+0x4cd/0x690 drivers/net/bonding/bond_main.c:4736 dev_change_rx_flags net/core/dev.c:9145 [inline] netif_set_allmulti+0x20f/0x380 net/core/dev.c:9247 dev_set_allmulti+0x12b/0x260 net/core/dev_api.c:289 team_change_rx_flags+0x20f/0x330 drivers/net/team/team_core.c:1789 dev_change_rx_flags net/core/dev.c:9145 [inline] netif_set_allmulti+0x20f/0x380 net/core/dev.c:9247 dev_set_allmulti+0x12b/0x260 net/core/dev_api.c:289 nbp_delete_promisc net/bridge/br_if.c:252 [inline] del_nbp+0xae/0xa60 net/bridge/br_if.c:340 br_dev_delete+0x6e/0x100 net/bridge/br_if.c:386 br_net_exit_batch_rtnl+0xfc/0x1a0 net/bridge/br.c:376 cleanup_net+0x664/0xbd0 net/core/net_namespace.c:647 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 dummy0: left allmulticast mode team0: left promiscuous mode C: left promiscuous mode team_slave_1: left promiscuous mode bond0: left promiscuous mode bond_slave_0: left promiscuous mode bond_slave_1: left promiscuous mode dummy0: left promiscuous mode bridge0: port 4(team0) entered disabled state bridge_slave_1: left allmulticast mode bridge_slave_1: left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state team0: Port device bond0 removed bond0 (unregistering): (slave bond_slave_0): Releasing backup interface bond0 (unregistering): (slave bond_slave_1): Releasing backup interface bond0 (unregistering): (slave dummy0): Releasing backup interface bond0 (unregistering): Released all slaves hsr_slave_0: left promiscuous mode hsr_slave_1: left promiscuous mode batman_adv: batadv0: Interface deactivated: batadv_slave_0 batman_adv: batadv0: Removing interface: batadv_slave_0 batman_adv: batadv0: Interface deactivated: batadv_slave_1 batman_adv: batadv0: Removing interface: batadv_slave_1 veth1_macvtap: left promiscuous mode veth0_macvtap: left promiscuous mode veth1_vlan: left promiscuous mode veth0_vlan: left promiscuous mode team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device C removed netdevsim netdevsim1 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim1 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim1 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim1 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim7 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim7 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim7 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim7 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 bridge_slave_1: left allmulticast mode bridge_slave_1: left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state bond0 (unregistering): (slave bond_slave_0): Releasing backup interface bond0 (unregistering): (slave bond_slave_1): Releasing backup interface bond0 (unregistering): (slave batadv_slave_0): Releasing backup interface bond0 (unregistering): Released all slaves bond0 (unregistering): (slave bond_slave_0): Releasing backup interface bond0 (unregistering): (slave bond_slave_1): Releasing backup interface bond0 (unregistering): (slave dummy0): Releasing backup interface bond0 (unregistering): Released all slaves hsr_slave_0: left promiscuous mode hsr_slave_1: left promiscuous mode batman_adv: batadv0: Interface deactivated: batadv_slave_1 batman_adv: batadv0: Removing interface: batadv_slave_1 hsr_slave_1: left promiscuous mode batman_adv: batadv0: Interface deactivated: batadv_slave_0 batman_adv: batadv0: Removing interface: batadv_slave_0 batman_adv: batadv0: Interface deactivated: batadv_slave_1 batman_adv: batadv0: Removing interface: batadv_slave_1 veth1_macvtap: left promiscuous mode veth0_macvtap: left promiscuous mode veth1_vlan: left promiscuous mode veth0_vlan: left promiscuous mode veth1_macvtap: left promiscuous mode veth0_macvtap: left promiscuous mode veth1_vlan: left promiscuous mode veth0_vlan: left promiscuous mode team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device team_slave_0 removed team0 (unregistering): Port device vlan0 removed team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device team_slave_0 removed