[   11.597426][   T11] ==================================================================
[   11.597733][   T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40
[   11.598053][   T11] Read of size 8 at addr ffff8880092700f8 by task kworker/u16:0/11
[   11.598365][   T11] 
[   11.598455][   T11] CPU: 3 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1
[   11.598724][   T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.598947][   T11] Workqueue: netns cleanup_net
[   11.599137][   T11] Call Trace:
[   11.599277][   T11]  <TASK>
[   11.599376][   T11]  dump_stack_lvl+0x82/0xd0
[   11.599566][   T11]  print_address_description.constprop.0+0x2c/0x3b0
[   11.599791][   T11]  ? cleanup_net+0x932/0xa40
[   11.599983][   T11]  print_report+0xb4/0x270
[   11.600165][   T11]  ? kasan_addr_to_slab+0x25/0x80
[   11.600347][   T11]  kasan_report+0xbd/0xf0
[   11.600488][   T11]  ? cleanup_net+0x932/0xa40
[   11.600693][   T11]  cleanup_net+0x932/0xa40
[   11.600884][   T11]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   11.601086][   T11]  ? __pfx_cleanup_net+0x10/0x10
[   11.601288][   T11]  ? trace_lock_acquire+0x148/0x1f0
[   11.601484][   T11]  ? lock_acquire+0x32/0xc0
[   11.601678][   T11]  ? process_one_work+0xe0b/0x16d0
[   11.601881][   T11]  process_one_work+0xe55/0x16d0
[   11.602092][   T11]  ? __pfx___lock_release+0x10/0x10
[   11.602276][   T11]  ? __pfx_process_one_work+0x10/0x10
[   11.602464][   T11]  ? assign_work+0x16c/0x240
[   11.602650][   T11]  worker_thread+0x58c/0xce0
[   11.602909][   T11]  ? __pfx_worker_thread+0x10/0x10
[   11.603116][   T11]  kthread+0x28a/0x350
[   11.603268][   T11]  ? __pfx_kthread+0x10/0x10
[   11.603455][   T11]  ret_from_fork+0x31/0x70
[   11.603638][   T11]  ? __pfx_kthread+0x10/0x10
[   11.603818][   T11]  ret_from_fork_asm+0x1a/0x30
[   11.604026][   T11]  </TASK>
[   11.604169][   T11] 
[   11.604260][   T11] Allocated by task 226:
[   11.604401][   T11]  kasan_save_stack+0x24/0x50
[   11.604591][   T11]  kasan_save_track+0x14/0x30
[   11.604773][   T11]  __kasan_slab_alloc+0x59/0x70
[   11.604965][   T11]  kmem_cache_alloc_noprof+0x10b/0x350
[   11.605152][   T11]  copy_net_ns+0xc6/0x340
[   11.605288][   T11]  create_new_namespaces+0x35f/0x920
[   11.605475][   T11]  unshare_nsproxy_namespaces+0x8d/0x130
[   11.605664][   T11]  ksys_unshare+0x2a9/0x660
[   11.605850][   T11]  __x64_sys_unshare+0x31/0x40
[   11.606031][   T11]  do_syscall_64+0xc1/0x1d0
[   11.606213][   T11]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   11.606450][   T11] 
[   11.606539][   T11] Freed by task 11:
[   11.606683][   T11]  kasan_save_stack+0x24/0x50
[   11.606863][   T11]  kasan_save_track+0x14/0x30
[   11.607057][   T11]  kasan_save_free_info+0x3b/0x60
[   11.607236][   T11]  __kasan_slab_free+0x38/0x50
[   11.607437][   T11]  kmem_cache_free+0xf8/0x330
[   11.607620][   T11]  cleanup_net+0x5a8/0xa40
[   11.607811][   T11]  process_one_work+0xe55/0x16d0
[   11.607994][   T11]  worker_thread+0x58c/0xce0
[   11.608174][   T11]  kthread+0x28a/0x350
[   11.608333][   T11]  ret_from_fork+0x31/0x70
[   11.608525][   T11]  ret_from_fork_asm+0x1a/0x30
[   11.608708][   T11] 
[   11.608804][   T11] The buggy address belongs to the object at ffff888009270040
[   11.608804][   T11]  which belongs to the cache net_namespace of size 5696
[   11.609302][   T11] The buggy address is located 184 bytes inside of
[   11.609302][   T11]  freed 5696-byte region [ffff888009270040, ffff888009271680)
[   11.609782][   T11] 
[   11.609879][   T11] The buggy address belongs to the physical page:
[   11.610111][   T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888009272fc0 pfn:0x9270
[   11.610532][   T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   11.610869][   T11] flags: 0x80000000000240(workingset|head|node=0|zone=1)
[   11.611100][   T11] page_type: f5(slab)
[   11.611248][   T11] raw: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   11.611587][   T11] raw: ffff888009272fc0 0000000000050002 00000001f5000000 0000000000000000
[   11.611899][   T11] head: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   11.612214][   T11] head: ffff888009272fc0 0000000000050002 00000001f5000000 0000000000000000
[   11.612528][   T11] head: 0080000000000003 ffffea0000249c01 ffffffffffffffff 0000000000000000
[   11.612859][   T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
[   11.613176][   T11] page dumped because: kasan: bad access detected
[   11.613414][   T11] 
[   11.613510][   T11] Memory state around the buggy address:
[   11.613687][   T11]  ffff88800926ff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   11.613957][   T11]  ffff888009270000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   11.614222][   T11] >ffff888009270080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   11.614499][   T11]                                                                 ^
[   11.614759][   T11]  ffff888009270100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   11.615022][   T11]  ffff888009270180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   11.615280][   T11] ==================================================================
[   11.615562][   T11] Disabling lock debugging due to kernel taint