[   10.799740][   T11] ==================================================================
[   10.800000][   T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40
[   10.800208][   T11] Read of size 8 at addr ffff88800bf580f8 by task kworker/u16:0/11
[   10.800404][   T11] 
[   10.800473][   T11] CPU: 0 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1
[   10.800682][   T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.800850][   T11] Workqueue: netns cleanup_net
[   10.800999][   T11] Call Trace:
[   10.801099][   T11]  <TASK>
[   10.801168][   T11]  dump_stack_lvl+0x82/0xd0
[   10.801305][   T11]  print_address_description.constprop.0+0x2c/0x3b0
[   10.801486][   T11]  ? cleanup_net+0x932/0xa40
[   10.801625][   T11]  print_report+0xb4/0x270
[   10.801759][   T11]  ? kasan_addr_to_slab+0x25/0x80
[   10.801890][   T11]  kasan_report+0xbd/0xf0
[   10.801989][   T11]  ? cleanup_net+0x932/0xa40
[   10.802125][   T11]  cleanup_net+0x932/0xa40
[   10.802259][   T11]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   10.802398][   T11]  ? __pfx_cleanup_net+0x10/0x10
[   10.802530][   T11]  ? trace_lock_acquire+0x148/0x1f0
[   10.802665][   T11]  ? lock_acquire+0x32/0xc0
[   10.802795][   T11]  ? process_one_work+0xe0b/0x16d0
[   10.802930][   T11]  process_one_work+0xe55/0x16d0
[   10.803063][   T11]  ? __pfx___lock_release+0x10/0x10
[   10.803233][   T11]  ? __pfx_process_one_work+0x10/0x10
[   10.803383][   T11]  ? assign_work+0x16c/0x240
[   10.803525][   T11]  worker_thread+0x58c/0xce0
[   10.803698][   T11]  ? __pfx_worker_thread+0x10/0x10
[   10.803838][   T11]  kthread+0x28a/0x350
[   10.803954][   T11]  ? __pfx_kthread+0x10/0x10
[   10.804098][   T11]  ret_from_fork+0x31/0x70
[   10.804237][   T11]  ? __pfx_kthread+0x10/0x10
[   10.804375][   T11]  ret_from_fork_asm+0x1a/0x30
[   10.804522][   T11]  </TASK>
[   10.804631][   T11] 
[   10.804771][   T11] Allocated by task 225:
[   10.804877][   T11]  kasan_save_stack+0x24/0x50
[   10.805021][   T11]  kasan_save_track+0x14/0x30
[   10.805158][   T11]  __kasan_slab_alloc+0x59/0x70
[   10.805301][   T11]  kmem_cache_alloc_noprof+0x10b/0x350
[   10.805445][   T11]  copy_net_ns+0xc6/0x340
[   10.805551][   T11]  create_new_namespaces+0x35f/0x920
[   10.805685][   T11]  unshare_nsproxy_namespaces+0x8d/0x130
[   10.805823][   T11]  ksys_unshare+0x2a9/0x660
[   10.805958][   T11]  __x64_sys_unshare+0x31/0x40
[   10.806081][   T11]  do_syscall_64+0xc1/0x1d0
[   10.806211][   T11]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   10.806368][   T11] 
[   10.806434][   T11] Freed by task 11:
[   10.806536][   T11]  kasan_save_stack+0x24/0x50
[   10.806661][   T11]  kasan_save_track+0x14/0x30
[   10.806805][   T11]  kasan_save_free_info+0x3b/0x60
[   10.806936][   T11]  __kasan_slab_free+0x38/0x50
[   10.807061][   T11]  kmem_cache_free+0xf8/0x330
[   10.807211][   T11]  cleanup_net+0x5a8/0xa40
[   10.807358][   T11]  process_one_work+0xe55/0x16d0
[   10.807491][   T11]  worker_thread+0x58c/0xce0
[   10.807642][   T11]  kthread+0x28a/0x350
[   10.807748][   T11]  ret_from_fork+0x31/0x70
[   10.807877][   T11]  ret_from_fork_asm+0x1a/0x30
[   10.808021][   T11] 
[   10.808089][   T11] The buggy address belongs to the object at ffff88800bf58040
[   10.808089][   T11]  which belongs to the cache net_namespace of size 5696
[   10.808432][   T11] The buggy address is located 184 bytes inside of
[   10.808432][   T11]  freed 5696-byte region [ffff88800bf58040, ffff88800bf59680)
[   10.808738][   T11] 
[   10.808814][   T11] The buggy address belongs to the physical page:
[   10.808978][   T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800bf5afc0 pfn:0xbf58
[   10.809241][   T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   10.809439][   T11] flags: 0x80000000000240(workingset|head|node=0|zone=1)
[   10.809613][   T11] page_type: f5(slab)
[   10.809724][   T11] raw: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   10.809962][   T11] raw: ffff88800bf5afc0 0000000000050002 00000001f5000000 0000000000000000
[   10.810190][   T11] head: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   10.810419][   T11] head: ffff88800bf5afc0 0000000000050002 00000001f5000000 0000000000000000
[   10.810665][   T11] head: 0080000000000003 ffffea00002fd601 ffffffffffffffff 0000000000000000
[   10.810894][   T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
[   10.811124][   T11] page dumped because: kasan: bad access detected
[   10.811288][   T11] 
[   10.811356][   T11] Memory state around the buggy address:
[   10.811488][   T11]  ffff88800bf57f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   10.811701][   T11]  ffff88800bf58000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   10.811889][   T11] >ffff88800bf58080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.812077][   T11]                                                                 ^
[   10.812271][   T11]  ffff88800bf58100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.812460][   T11]  ffff88800bf58180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.812649][   T11] ==================================================================
[   10.812854][   T11] Disabling lock debugging due to kernel taint