ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
---[ end trace 0000000000000000 ]---
=====================================================
BUG: KMSAN: uninit-value in __list_add_valid include/linux/list.h:83 [inline]
BUG: KMSAN: uninit-value in __list_add include/linux/list.h:150 [inline]
BUG: KMSAN: uninit-value in list_add_tail include/linux/list.h:183 [inline]
BUG: KMSAN: uninit-value in list_move_tail include/linux/list.h:311 [inline]
BUG: KMSAN: uninit-value in ref_tracker_free+0x8c7/0xec0 lib/ref_tracker.c:262
 __list_add_valid include/linux/list.h:83 [inline]
 __list_add include/linux/list.h:150 [inline]
 list_add_tail include/linux/list.h:183 [inline]
 list_move_tail include/linux/list.h:311 [inline]
 ref_tracker_free+0x8c7/0xec0 lib/ref_tracker.c:262
 netdev_tracker_free include/linux/netdevice.h:4295 [inline]
 netdev_put include/linux/netdevice.h:4312 [inline]
 neigh_parms_release+0x212/0x3d0 net/core/neighbour.c:1711
 addrconf_ifdown+0x2f4a/0x3240 net/ipv6/addrconf.c:4003
 addrconf_notify+0x18f/0x1c40 net/ipv6/addrconf.c:3772
 notifier_call_chain kernel/notifier.c:85 [inline]
 raw_notifier_call_chain+0xe8/0x440 kernel/notifier.c:453
 call_netdevice_notifiers_info+0x1be/0x2b0 net/core/dev.c:2141
 call_netdevice_notifiers_extack net/core/dev.c:2179 [inline]
 call_netdevice_notifiers net/core/dev.c:2193 [inline]
 unregister_netdevice_many_notify+0x1fbf/0x3e30 net/core/dev.c:11809
 unregister_netdevice_many net/core/dev.c:11875 [inline]
 unregister_netdevice_queue+0x598/0x5f0 net/core/dev.c:11741
 unregister_netdevice include/linux/netdevice.h:3329 [inline]
 nsim_destroy+0x143/0x6f0 drivers/net/netdevsim/netdev.c:1021
 __nsim_dev_port_del+0x1e9/0x320 drivers/net/netdevsim/dev.c:1428
 nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1440 [inline]
 nsim_dev_reload_destroy+0x464/0x7b0 drivers/net/netdevsim/dev.c:1661
 nsim_dev_reload_down+0x114/0x150 drivers/net/netdevsim/dev.c:968
 devlink_reload+0xdc/0xa50 net/devlink/dev.c:461
 devlink_pernet_pre_exit+0x18f/0x520 net/devlink/core.c:509
 ops_pre_exit_list net/core/net_namespace.c:162 [inline]
 cleanup_net+0xcc9/0x1d20 net/core/net_namespace.c:632
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3317
 worker_thread+0xea7/0x14f0 kernel/workqueue.c:3398
 kthread+0x6b9/0xef0 kernel/kthread.c:464
 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:4121 [inline]
 slab_alloc_node mm/slub.c:4164 [inline]
 __kmalloc_cache_noprof+0x8e3/0xdf0 mm/slub.c:4320
 kmalloc_noprof include/linux/slab.h:901 [inline]
 batadv_forw_packet_alloc+0x1c8/0x530 net/batman-adv/send.c:519
 batadv_iv_ogm_aggregate_new net/batman-adv/bat_iv_ogm.c:562 [inline]
 batadv_iv_ogm_queue_add+0x114e/0x18a0 net/batman-adv/bat_iv_ogm.c:670
 batadv_iv_ogm_schedule_buff net/batman-adv/bat_iv_ogm.c:833 [inline]
 batadv_iv_ogm_schedule+0xce8/0x1510 net/batman-adv/bat_iv_ogm.c:868
 batadv_iv_send_outstanding_bat_ogm_packet+0xcda/0xe50 net/batman-adv/bat_iv_ogm.c:1712
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3317
 worker_thread+0xea7/0x14f0 kernel/workqueue.c:3398
 kthread+0x6b9/0xef0 kernel/kthread.c:464
 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

CPU: 1 UID: 0 PID: 8885 Comm: kworker/u8:0 Tainted: G        W          6.13.0-syzkaller-09338-g05dbaf8dd8bf #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: netns cleanup_net
=====================================================