[   10.600134][   T11] ==================================================================
[   10.600461][   T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40
[   10.600753][   T11] Read of size 8 at addr ffff888009ae80f8 by task kworker/u16:0/11
[   10.601042][   T11] 
[   10.601154][   T11] CPU: 0 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1
[   10.601455][   T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.601705][   T11] Workqueue: netns cleanup_net
[   10.601923][   T11] Call Trace:
[   10.602081][   T11]  <TASK>
[   10.602199][   T11]  dump_stack_lvl+0x82/0xd0
[   10.602411][   T11]  print_address_description.constprop.0+0x2c/0x3b0
[   10.602667][   T11]  ? cleanup_net+0x932/0xa40
[   10.602886][   T11]  print_report+0xb4/0x270
[   10.603088][   T11]  ? kasan_addr_to_slab+0x25/0x80
[   10.603288][   T11]  kasan_report+0xbd/0xf0
[   10.603449][   T11]  ? cleanup_net+0x932/0xa40
[   10.603654][   T11]  cleanup_net+0x932/0xa40
[   10.603854][   T11]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   10.604065][   T11]  ? __pfx_cleanup_net+0x10/0x10
[   10.604266][   T11]  ? trace_lock_acquire+0x148/0x1f0
[   10.604471][   T11]  ? lock_acquire+0x32/0xc0
[   10.604669][   T11]  ? process_one_work+0xe0b/0x16d0
[   10.604880][   T11]  process_one_work+0xe55/0x16d0
[   10.605082][   T11]  ? __pfx___lock_release+0x10/0x10
[   10.605297][   T11]  ? __pfx_process_one_work+0x10/0x10
[   10.605494][   T11]  ? assign_work+0x16c/0x240
[   10.605687][   T11]  worker_thread+0x58c/0xce0
[   10.605887][   T11]  ? __pfx_worker_thread+0x10/0x10
[   10.606077][   T11]  kthread+0x28a/0x350
[   10.606224][   T11]  ? __pfx_kthread+0x10/0x10
[   10.606410][   T11]  ret_from_fork+0x31/0x70
[   10.606600][   T11]  ? __pfx_kthread+0x10/0x10
[   10.606793][   T11]  ret_from_fork_asm+0x1a/0x30
[   10.606992][   T11]  </TASK>
[   10.607138][   T11] 
[   10.607234][   T11] Allocated by task 227:
[   10.607375][   T11]  kasan_save_stack+0x24/0x50
[   10.607571][   T11]  kasan_save_track+0x14/0x30
[   10.607755][   T11]  __kasan_slab_alloc+0x59/0x70
[   10.607941][   T11]  kmem_cache_alloc_noprof+0x10b/0x350
[   10.608136][   T11]  copy_net_ns+0xc6/0x340
[   10.608280][   T11]  create_new_namespaces+0x35f/0x920
[   10.608471][   T11]  unshare_nsproxy_namespaces+0x8d/0x130
[   10.608685][   T11]  ksys_unshare+0x2a9/0x660
[   10.608878][   T11]  __x64_sys_unshare+0x31/0x40
[   10.609062][   T11]  do_syscall_64+0xc1/0x1d0
[   10.609251][   T11]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   10.609482][   T11] 
[   10.609578][   T11] Freed by task 11:
[   10.609754][   T11]  kasan_save_stack+0x24/0x50
[   10.609988][   T11]  kasan_save_track+0x14/0x30
[   10.610201][   T11]  kasan_save_free_info+0x3b/0x60
[   10.610401][   T11]  __kasan_slab_free+0x38/0x50
[   10.610583][   T11]  kmem_cache_free+0xf8/0x330
[   10.610768][   T11]  cleanup_net+0x5a8/0xa40
[   10.610953][   T11]  process_one_work+0xe55/0x16d0
[   10.611137][   T11]  worker_thread+0x58c/0xce0
[   10.611321][   T11]  kthread+0x28a/0x350
[   10.611462][   T11]  ret_from_fork+0x31/0x70
[   10.611646][   T11]  ret_from_fork_asm+0x1a/0x30
[   10.611854][   T11] 
[   10.611950][   T11] The buggy address belongs to the object at ffff888009ae8040
[   10.611950][   T11]  which belongs to the cache net_namespace of size 5696
[   10.612425][   T11] The buggy address is located 184 bytes inside of
[   10.612425][   T11]  freed 5696-byte region [ffff888009ae8040, ffff888009ae9680)
[   10.612856][   T11] 
[   10.612956][   T11] The buggy address belongs to the physical page:
[   10.613181][   T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888009aeafc0 pfn:0x9ae8
[   10.613548][   T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   10.613834][   T11] flags: 0x80000000000240(workingset|head|node=0|zone=1)
[   10.614118][   T11] page_type: f5(slab)
[   10.614277][   T11] raw: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   10.614635][   T11] raw: ffff888009aeafc0 0000000000050002 00000001f5000000 0000000000000000
[   10.614980][   T11] head: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   10.615335][   T11] head: ffff888009aeafc0 0000000000050002 00000001f5000000 0000000000000000
[   10.615681][   T11] head: 0080000000000003 ffffea000026ba01 ffffffffffffffff 0000000000000000
[   10.616041][   T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
[   10.616389][   T11] page dumped because: kasan: bad access detected
[   10.616630][   T11] 
[   10.616728][   T11] Memory state around the buggy address:
[   10.616916][   T11]  ffff888009ae7f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   10.617207][   T11]  ffff888009ae8000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   10.617484][   T11] >ffff888009ae8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.617767][   T11]                                                                 ^
[   10.618048][   T11]  ffff888009ae8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.618330][   T11]  ffff888009ae8180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.618637][   T11] ==================================================================
[   10.618952][   T11] Disabling lock debugging due to kernel taint