=====================================================
BUG: KMSAN: uninit-value in __flush_smp_call_function_queue+0x343/0x1810 kernel/smp.c:549
 __flush_smp_call_function_queue+0x343/0x1810 kernel/smp.c:549
 generic_smp_call_function_single_interrupt+0x1c/0x30 kernel/smp.c:477
 __sysvec_call_function_single+0x48/0x350 arch/x86/kernel/smp.c:272
 instr_sysvec_call_function_single arch/x86/kernel/smp.c:267 [inline]
 sysvec_call_function_single+0x7c/0x90 arch/x86/kernel/smp.c:267
 asm_sysvec_call_function_single+0x1f/0x30 arch/x86/include/asm/idtentry.h:704
 console_flush_one_record arch/x86/include/asm/irqflags.h:-1 [inline]
 console_flush_all+0xe48/0x1270 kernel/printk/printk.c:3343
 __console_flush_and_unlock kernel/printk/printk.c:3373 [inline]
 console_unlock+0xeb/0x460 kernel/printk/printk.c:3413
 vprintk_emit+0x850/0xba0 kernel/printk/printk.c:2479
 vprintk_default+0x3f/0x50 kernel/printk/printk.c:2494
 vprintk+0x36/0x50 kernel/printk/printk_safe.c:82
 _printk+0x17e/0x1b0 kernel/printk/printk.c:2504
 __netdev_printk+0x80f/0x950 net/core/dev.c:12949
 netdev_info+0x1b4/0x1d0 net/core/dev.c:12996
 team_port_del+0x210b/0x23a0 drivers/net/team/team_core.c:1466
 team_del_slave_on_unregister drivers/net/team/team_core.c:2129 [inline]
 team_device_event+0x2fd/0x8c0 drivers/net/team/team_core.c:3190
 notifier_call_chain kernel/notifier.c:85 [inline]
 raw_notifier_call_chain+0xe6/0x450 kernel/notifier.c:453
 call_netdevice_notifiers_info net/core/dev.c:2249 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2287 [inline]
 call_netdevice_notifiers net/core/dev.c:2301 [inline]
 unregister_netdevice_many_notify+0x2ec6/0x4a60 net/core/dev.c:12421
 unregister_netdevice_many net/core/dev.c:12484 [inline]
 default_device_exit_batch+0x1061/0x1120 net/core/dev.c:13076
 ops_exit_list net/core/net_namespace.c:205 [inline]
 ops_undo_list+0x7e0/0xb80 net/core/net_namespace.c:252
 cleanup_net+0xc24/0x1680 net/core/net_namespace.c:702
 process_one_work kernel/workqueue.c:3314 [inline]
 process_scheduled_works+0xb65/0x1e40 kernel/workqueue.c:3397
 worker_thread+0xee4/0x1590 kernel/workqueue.c:3478
 kthread+0x53a/0x5f0 kernel/kthread.c:436
 ret_from_fork+0x20f/0x8d0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Local variable rf created at:
 __schedule+0x3a/0x8750 kernel/sched/core.c:7028
 preempt_schedule_irq+0x50/0xa0 kernel/sched/core.c:7513

CPU: 1 UID: 0 PID: 72 Comm: kworker/u8:5 Tainted: G             L      syzkaller #0 PREEMPT(lazy) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: netns cleanup_net
=====================================================