[   25.612291][   T11] ==================================================================
[   25.612577][   T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40
[   25.612768][   T11] Read of size 8 at addr ffff8880089300f8 by task kworker/u16:0/11
[   25.612943][   T11] 
[   25.613009][   T11] CPU: 2 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1
[   25.613189][   T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   25.613347][   T11] Workqueue: netns cleanup_net
[   25.613481][   T11] Call Trace:
[   25.613587][   T11]  <TASK>
[   25.613662][   T11]  dump_stack_lvl+0x82/0xd0
[   25.613792][   T11]  print_address_description.constprop.0+0x2c/0x3b0
[   25.613956][   T11]  ? cleanup_net+0x932/0xa40
[   25.614085][   T11]  print_report+0xb4/0x270
[   25.614211][   T11]  ? kasan_addr_to_slab+0x25/0x80
[   25.614337][   T11]  kasan_report+0xbd/0xf0
[   25.614433][   T11]  ? cleanup_net+0x932/0xa40
[   25.614556][   T11]  cleanup_net+0x932/0xa40
[   25.614679][   T11]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   25.614811][   T11]  ? __pfx_cleanup_net+0x10/0x10
[   25.614931][   T11]  ? trace_lock_acquire+0x148/0x1f0
[   25.615058][   T11]  ? lock_acquire+0x32/0xc0
[   25.615182][   T11]  ? process_one_work+0xe0b/0x16d0
[   25.615310][   T11]  process_one_work+0xe55/0x16d0
[   25.615437][   T11]  ? __pfx___lock_release+0x10/0x10
[   25.615560][   T11]  ? __pfx_process_one_work+0x10/0x10
[   25.615687][   T11]  ? assign_work+0x16c/0x240
[   25.615808][   T11]  worker_thread+0x58c/0xce0
[   25.615935][   T11]  ? __pfx_worker_thread+0x10/0x10
[   25.616057][   T11]  kthread+0x28a/0x350
[   25.616151][   T11]  ? __pfx_kthread+0x10/0x10
[   25.616279][   T11]  ret_from_fork+0x31/0x70
[   25.616408][   T11]  ? __pfx_kthread+0x10/0x10
[   25.616529][   T11]  ret_from_fork_asm+0x1a/0x30
[   25.616660][   T11]  </TASK>
[   25.616757][   T11] 
[   25.616822][   T11] Allocated by task 249:
[   25.616924][   T11]  kasan_save_stack+0x24/0x50
[   25.617048][   T11]  kasan_save_track+0x14/0x30
[   25.617171][   T11]  __kasan_slab_alloc+0x59/0x70
[   25.617296][   T11]  kmem_cache_alloc_noprof+0x10b/0x350
[   25.617420][   T11]  copy_net_ns+0xc6/0x340
[   25.617514][   T11]  create_new_namespaces+0x35f/0x920
[   25.617637][   T11]  unshare_nsproxy_namespaces+0x8d/0x130
[   25.617760][   T11]  ksys_unshare+0x2a9/0x660
[   25.617887][   T11]  __x64_sys_unshare+0x31/0x40
[   25.618014][   T11]  do_syscall_64+0xc1/0x1d0
[   25.618143][   T11]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   25.618298][   T11] 
[   25.618361][   T11] Freed by task 11:
[   25.618453][   T11]  kasan_save_stack+0x24/0x50
[   25.618576][   T11]  kasan_save_track+0x14/0x30
[   25.618697][   T11]  kasan_save_free_info+0x3b/0x60
[   25.618823][   T11]  __kasan_slab_free+0x38/0x50
[   25.618943][   T11]  kmem_cache_free+0xf8/0x330
[   25.619064][   T11]  cleanup_net+0x5a8/0xa40
[   25.619188][   T11]  process_one_work+0xe55/0x16d0
[   25.619312][   T11]  worker_thread+0x58c/0xce0
[   25.619431][   T11]  kthread+0x28a/0x350
[   25.619522][   T11]  ret_from_fork+0x31/0x70
[   25.619641][   T11]  ret_from_fork_asm+0x1a/0x30
[   25.619765][   T11] 
[   25.619828][   T11] Last potentially related work creation:
[   25.619943][   T11]  kasan_save_stack+0x24/0x50
[   25.620069][   T11]  __kasan_record_aux_stack+0x8e/0xa0
[   25.620192][   T11]  insert_work+0x34/0x230
[   25.620288][   T11]  __queue_work+0x5fd/0xa40
[   25.620413][   T11]  queue_delayed_work_on+0x8c/0xa0
[   25.620536][   T11]  __inet_insert_ifa+0x751/0xb10
[   25.620661][   T11]  inet_rtm_newaddr+0x833/0xbd0
[   25.620783][   T11]  rtnetlink_rcv_msg+0x712/0xc10
[   25.620911][   T11]  netlink_rcv_skb+0x130/0x360
[   25.621042][   T11]  netlink_unicast+0x44b/0x710
[   25.621168][   T11]  netlink_sendmsg+0x723/0xbe0
[   25.621293][   T11]  ____sys_sendmsg+0x7ac/0xa10
[   25.621416][   T11]  ___sys_sendmsg+0xee/0x170
[   25.621535][   T11]  __sys_sendmsg+0x109/0x1a0
[   25.621656][   T11]  do_syscall_64+0xc1/0x1d0
[   25.621780][   T11]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   25.621932][   T11] 
[   25.621999][   T11] Second to last potentially related work creation:
[   25.622145][   T11]  kasan_save_stack+0x24/0x50
[   25.622270][   T11]  __kasan_record_aux_stack+0x8e/0xa0
[   25.622399][   T11]  insert_work+0x34/0x230
[   25.622492][   T11]  __queue_work+0x5fd/0xa40
[   25.622616][   T11]  queue_delayed_work_on+0x8c/0xa0
[   25.622740][   T11]  __inet_insert_ifa+0x751/0xb10
[   25.622865][   T11]  inetdev_event+0xb18/0xcf0
[   25.622987][   T11]  notifier_call_chain+0xcd/0x150
[   25.623113][   T11]  __dev_notify_flags+0xe6/0x250
[   25.623239][   T11]  dev_change_flags+0xec/0x160
[   25.623363][   T11]  do_setlink.constprop.0+0x79d/0x2300
[   25.623484][   T11]  rtnl_newlink+0x6de/0xa80
[   25.623614][   T11]  rtnetlink_rcv_msg+0x712/0xc10
[   25.623741][   T11]  netlink_rcv_skb+0x130/0x360
[   25.623866][   T11]  netlink_unicast+0x44b/0x710
[   25.623988][   T11]  netlink_sendmsg+0x723/0xbe0
[   25.624112][   T11]  ____sys_sendmsg+0x7ac/0xa10
[   25.624237][   T11]  ___sys_sendmsg+0xee/0x170
[   25.624370][   T11]  __sys_sendmsg+0x109/0x1a0
[   25.624493][   T11]  do_syscall_64+0xc1/0x1d0
[   25.624615][   T11]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   25.624769][   T11] 
[   25.624833][   T11] The buggy address belongs to the object at ffff888008930040
[   25.624833][   T11]  which belongs to the cache net_namespace of size 6592
[   25.625154][   T11] The buggy address is located 184 bytes inside of
[   25.625154][   T11]  freed 6592-byte region [ffff888008930040, ffff888008931a00)
[   25.625446][   T11] 
[   25.625506][   T11] The buggy address belongs to the physical page:
[   25.625658][   T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x8930
[   25.625870][   T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   25.626053][   T11] flags: 0x80000000000040(head|node=0|zone=1)
[   25.626210][   T11] page_type: f5(slab)
[   25.626306][   T11] raw: 0080000000000040 ffff888001963240 ffff8880019680a8 ffff8880019680a8
[   25.626525][   T11] raw: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000
[   25.626736][   T11] head: 0080000000000040 ffff888001963240 ffff8880019680a8 ffff8880019680a8
[   25.626952][   T11] head: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000
[   25.627168][   T11] head: 0080000000000003 ffffea0000224c01 ffffffffffffffff 0000000000000000
[   25.627384][   T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
[   25.627594][   T11] page dumped because: kasan: bad access detected
[   25.627746][   T11] 
[   25.627809][   T11] Memory state around the buggy address:
[   25.627929][   T11]  ffff88800892ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   25.628109][   T11]  ffff888008930000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   25.628283][   T11] >ffff888008930080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   25.628459][   T11]                                                                 ^
[   25.628642][   T11]  ffff888008930100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   25.628816][   T11]  ffff888008930180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   25.628994][   T11] ==================================================================
[   25.629230][   T11] Disabling lock debugging due to kernel taint