=====================================================
BUG: KMSAN: uninit-value in __list_del_entry_valid+0x390/0x490 lib/list_debug.c:62
 __list_del_entry_valid+0x390/0x490 lib/list_debug.c:62
 __list_del_entry include/linux/list.h:134 [inline]
 list_del_init include/linux/list.h:206 [inline]
 process_one_work+0x6aa/0x1410 kernel/workqueue.c:2334
 worker_thread+0x107e/0x1d60 kernel/workqueue.c:2537
 kthread+0x31f/0x430 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

Uninit was created at:
 slab_post_alloc_hook+0x12d/0xb60 mm/slab.h:774
 slab_alloc_node mm/slub.c:3452 [inline]
 __kmem_cache_alloc_node+0x518/0x920 mm/slub.c:3491
 __do_kmalloc_node mm/slab_common.c:966 [inline]
 __kmalloc_node_track_caller+0x118/0x3c0 mm/slab_common.c:987
 kmemdup+0x48/0xc0 mm/util.c:130
 __devinet_sysctl_register+0x7e/0x620 net/ipv4/devinet.c:2575
 devinet_sysctl_register+0x2e9/0x3e0 net/ipv4/devinet.c:2627
 inetdev_init+0x535/0x890 net/ipv4/devinet.c:286
 inetdev_event+0xbe5/0x1f40 net/ipv4/devinet.c:1535
 notifier_call_chain kernel/notifier.c:87 [inline]
 raw_notifier_call_chain+0xc0/0x240 kernel/notifier.c:455
 call_netdevice_notifiers_info net/core/dev.c:1937 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:1975 [inline]
 call_netdevice_notifiers+0x1fb/0x2f0 net/core/dev.c:1989
 register_netdevice+0x1f8d/0x2200 net/core/dev.c:10080
 register_netdev+0xa5/0xe0 net/core/dev.c:10175
 sit_init_net+0x4af/0x9e0 net/ipv6/sit.c:1858
 ops_init+0x301/0x880 net/core/net_namespace.c:135
 setup_net+0x4fb/0x1320 net/core/net_namespace.c:338
 copy_net_ns+0x69f/0xd40 net/core/net_namespace.c:490
 create_new_namespaces+0x717/0xdb0 kernel/nsproxy.c:110
 unshare_nsproxy_namespaces+0x17a/0x2b0 kernel/nsproxy.c:228
 ksys_unshare+0x867/0x1250 kernel/fork.c:3203
 __do_sys_unshare kernel/fork.c:3274 [inline]
 __se_sys_unshare kernel/fork.c:3272 [inline]
 __x64_sys_unshare+0x48/0x70 kernel/fork.c:3272
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

CPU: 1 PID: 26588 Comm: kworker/1:7 Not tainted 6.3.0-rc7-syzkaller-g0255004d2a8e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Workqueue: events_freezable update_balloon_stats_func
=====================================================