BUG: scheduling while atomic: kworker/u4:1/10/0x00000002 Modules linked in: Preemption disabled at: [] ida_free+0x177/0x420 lib/idr.c:497 CPU: 1 PID: 10 Comm: kworker/u4:1 Tainted: G W 5.15.148-syzkaller-00718-g993bed180178 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: netns cleanup_net Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106 dump_stack+0x15/0x17 lib/dump_stack.c:113 __schedule_bug+0x195/0x260 kernel/sched/core.c:5707 schedule_debug kernel/sched/core.c:5734 [inline] __schedule+0xd19/0x1590 kernel/sched/core.c:6402 schedule+0x11f/0x1e0 kernel/sched/core.c:6595 synchronize_rcu_expedited+0x49d/0x600 kernel/rcu/tree_exp.h:946 synchronize_rcu+0x88/0x120 kernel/rcu/tree.c:3798 synchronize_net+0x39/0x40 net/core/dev.c:11011 nf_conntrack_cleanup_net_list+0x28/0x2c0 net/netfilter/nf_conntrack_core.c:2569 nf_conntrack_pernet_exit+0x18f/0x1a0 net/netfilter/nf_conntrack_standalone.c:1202 ops_exit_list net/core/net_namespace.c:174 [inline] cleanup_net+0x6ce/0xc00 net/core/net_namespace.c:596 process_one_work+0x6bb/0xc10 kernel/workqueue.c:2325 worker_thread+0xad5/0x12a0 kernel/workqueue.c:2472 kthread+0x421/0x510 kernel/kthread.c:337 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 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 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 device veth1_macvtap left promiscuous mode device veth0_vlan left promiscuous mode device veth1_macvtap left promiscuous mode