[   12.930453][  T287] eth0: renamed from r1h0
[   13.525945][  T294] eth1: renamed from r1h1
[   14.118612][  T301] eth2: renamed from r1h2
[   14.724024][  T308] eth3: renamed from r1h3
[   26.125583][   T68] ==================================================================
[   26.125916][   T68] BUG: KASAN: slab-use-after-free in cleanup_net+0xa5d/0xb90
[   26.126132][   T68] Read of size 8 at addr ffff88800a5f80f8 by task kworker/u16:1/68
[   26.126328][   T68] 
[   26.126415][   T68] CPU: 2 UID: 0 PID: 68 Comm: kworker/u16:1 Not tainted 6.12.0-virtme #1
[   26.126625][   T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   26.126796][   T68] Workqueue: netns cleanup_net
[   26.126947][   T68] Call Trace:
[   26.127060][   T68]  <TASK>
[   26.127136][   T68]  dump_stack_lvl+0x82/0xd0
[   26.127280][   T68]  print_address_description.constprop.0+0x2c/0x3b0
[   26.127462][   T68]  ? cleanup_net+0xa5d/0xb90
[   26.127612][   T68]  print_report+0xb4/0x270
[   26.127749][   T68]  ? kasan_addr_to_slab+0x25/0x80
[   26.127885][   T68]  kasan_report+0xbd/0xf0
[   26.127989][   T68]  ? cleanup_net+0xa5d/0xb90
[   26.128130][   T68]  cleanup_net+0xa5d/0xb90
[   26.128266][   T68]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   26.128405][   T68]  ? __pfx_cleanup_net+0x10/0x10
[   26.128547][   T68]  ? trace_lock_acquire+0x148/0x1f0
[   26.128685][   T68]  ? lock_acquire+0x32/0xc0
[   26.128826][   T68]  ? process_one_work+0xe0b/0x16d0
[   26.128965][   T68]  process_one_work+0xe55/0x16d0
[   26.129106][   T68]  ? __pfx___lock_release+0x10/0x10
[   26.129243][   T68]  ? __pfx_process_one_work+0x10/0x10
[   26.129384][   T68]  ? assign_work+0x16c/0x240
[   26.129526][   T68]  worker_thread+0x58c/0xce0
[   26.129667][   T68]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[   26.129842][   T68]  ? __pfx_worker_thread+0x10/0x10
[   26.129978][   T68]  ? __pfx_worker_thread+0x10/0x10
[   26.130118][   T68]  kthread+0x28a/0x350
[   26.130229][   T68]  ? __pfx_kthread+0x10/0x10
[   26.130368][   T68]  ret_from_fork+0x31/0x70
[   26.130519][   T68]  ? __pfx_kthread+0x10/0x10
[   26.130661][   T68]  ret_from_fork_asm+0x1a/0x30
[   26.130808][   T68]  </TASK>
[   26.130928][   T68] 
[   26.131001][   T68] Allocated by task 258:
[   26.131112][   T68]  kasan_save_stack+0x24/0x50
[   26.131257][   T68]  kasan_save_track+0x14/0x30
[   26.131397][   T68]  __kasan_slab_alloc+0x59/0x70
[   26.131534][   T68]  kmem_cache_alloc_noprof+0x10b/0x350
[   26.131676][   T68]  copy_net_ns+0xc6/0x540
[   26.131784][   T68]  create_new_namespaces+0x35f/0x920
[   26.131924][   T68]  unshare_nsproxy_namespaces+0x8a/0x1b0
[   26.132063][   T68]  ksys_unshare+0x2c4/0x6e0
[   26.132202][   T68]  __x64_sys_unshare+0x31/0x40
[   26.132345][   T68]  do_syscall_64+0xc1/0x1d0
[   26.132487][   T68]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   26.132668][   T68] 
[   26.132740][   T68] Freed by task 68:
[   26.132845][   T68]  kasan_save_stack+0x24/0x50
[   26.132994][   T68]  kasan_save_track+0x14/0x30
[   26.133134][   T68]  kasan_save_free_info+0x3b/0x60
[   26.133281][   T68]  __kasan_slab_free+0x38/0x50
[   26.133422][   T68]  kmem_cache_free+0xf8/0x330
[   26.133562][   T68]  cleanup_net+0x5a8/0xb90
[   26.133697][   T68]  process_one_work+0xe55/0x16d0
[   26.133833][   T68]  worker_thread+0x58c/0xce0
[   26.133973][   T68]  kthread+0x28a/0x350
[   26.134081][   T68]  ret_from_fork+0x31/0x70
[   26.134220][   T68]  ret_from_fork_asm+0x1a/0x30
[   26.134354][   T68] 
[   26.134429][   T68] Last potentially related work creation:
[   26.134572][   T68]  kasan_save_stack+0x24/0x50
[   26.134719][   T68]  __kasan_record_aux_stack+0x8e/0xa0
[   26.134860][   T68]  insert_work+0x34/0x230
[   26.134969][   T68]  __queue_work+0x5fd/0xa40
[   26.135111][   T68]  queue_delayed_work_on+0x8c/0xa0
[   26.135253][   T68]  __inet_insert_ifa+0x751/0xb10
[   26.135400][   T68]  inet_rtm_newaddr+0x833/0xbd0
[   26.135547][   T68]  rtnetlink_rcv_msg+0x712/0xc10
[   26.135694][   T68]  netlink_rcv_skb+0x130/0x360
[   26.135840][   T68]  netlink_unicast+0x44b/0x710
[   26.135984][   T68]  netlink_sendmsg+0x723/0xbe0
[   26.136125][   T68]  ____sys_sendmsg+0x7ac/0xa10
[   26.136269][   T68]  ___sys_sendmsg+0xee/0x170
[   26.136413][   T68]  __sys_sendmsg+0x109/0x1a0
[   26.136559][   T68]  do_syscall_64+0xc1/0x1d0
[   26.136700][   T68]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   26.136877][   T68] 
[   26.136949][   T68] Second to last potentially related work creation:
[   26.137124][   T68]  kasan_save_stack+0x24/0x50
[   26.137268][   T68]  __kasan_record_aux_stack+0x8e/0xa0
[   26.137408][   T68]  insert_work+0x34/0x230
[   26.137524][   T68]  __queue_work+0x5fd/0xa40
[   26.137667][   T68]  queue_delayed_work_on+0x8c/0xa0
[   26.137810][   T68]  __inet_insert_ifa+0x751/0xb10
[   26.137952][   T68]  inetdev_event+0xb18/0xcf0
[   26.138092][   T68]  notifier_call_chain+0xcd/0x150
[   26.138235][   T68]  __dev_notify_flags+0xe6/0x250
[   26.138378][   T68]  dev_change_flags+0xec/0x160
[   26.138517][   T68]  do_setlink.constprop.0+0x79d/0x2300
[   26.138663][   T68]  rtnl_newlink+0x6de/0xa80
[   26.138801][   T68]  rtnetlink_rcv_msg+0x712/0xc10
[   26.138940][   T68]  netlink_rcv_skb+0x130/0x360
[   26.139079][   T68]  netlink_unicast+0x44b/0x710
[   26.139219][   T68]  netlink_sendmsg+0x723/0xbe0
[   26.139367][   T68]  ____sys_sendmsg+0x7ac/0xa10
[   26.139507][   T68]  ___sys_sendmsg+0xee/0x170
[   26.139650][   T68]  __sys_sendmsg+0x109/0x1a0
[   26.139795][   T68]  do_syscall_64+0xc1/0x1d0
[   26.139938][   T68]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   26.140118][   T68] 
[   26.140193][   T68] The buggy address belongs to the object at ffff88800a5f8040
[   26.140193][   T68]  which belongs to the cache net_namespace of size 6528
[   26.140562][   T68] The buggy address is located 184 bytes inside of
[   26.140562][   T68]  freed 6528-byte region [ffff88800a5f8040, ffff88800a5f99c0)
[   26.140902][   T68] 
[   26.140978][   T68] The buggy address belongs to the physical page:
[   26.141144][   T68] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xa5f8
[   26.141381][   T68] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   26.141587][   T68] flags: 0x80000000000040(head|node=0|zone=1)
[   26.141763][   T68] page_type: f5(slab)
[   26.141871][   T68] raw: 0080000000000040 ffff888001975240 ffff88800197a0a8 ffff88800197a0a8
[   26.142111][   T68] raw: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000
[   26.142348][   T68] head: 0080000000000040 ffff888001975240 ffff88800197a0a8 ffff88800197a0a8
[   26.142595][   T68] head: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000
[   26.142846][   T68] head: 0080000000000003 ffffea0000297e01 ffffffffffffffff 0000000000000000
[   26.143091][   T68] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
[   26.143335][   T68] page dumped because: kasan: bad access detected
[   26.143507][   T68] 
[   26.143578][   T68] Memory state around the buggy address:
[   26.143719][   T68]  ffff88800a5f7f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   26.143924][   T68]  ffff88800a5f8000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   26.144121][   T68] >ffff88800a5f8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   26.144326][   T68]                                                                 ^
[   26.144529][   T68]  ffff88800a5f8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   26.144730][   T68]  ffff88800a5f8180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   26.144930][   T68] ==================================================================
[   26.145204][   T68] Disabling lock debugging due to kernel taint