[   10.666819][   T11] ==================================================================
[   10.667170][   T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40
[   10.667465][   T11] Read of size 8 at addr ffff8880122000f8 by task kworker/u16:0/11
[   10.667725][   T11] 
[   10.667835][   T11] CPU: 1 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1
[   10.668140][   T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.668374][   T11] Workqueue: netns cleanup_net
[   10.668588][   T11] Call Trace:
[   10.668766][   T11]  <TASK>
[   10.668876][   T11]  dump_stack_lvl+0x82/0xd0
[   10.669080][   T11]  print_address_description.constprop.0+0x2c/0x3b0
[   10.669340][   T11]  ? cleanup_net+0x932/0xa40
[   10.669546][   T11]  print_report+0xb4/0x270
[   10.669746][   T11]  ? kasan_addr_to_slab+0x25/0x80
[   10.669949][   T11]  kasan_report+0xbd/0xf0
[   10.670105][   T11]  ? cleanup_net+0x932/0xa40
[   10.670316][   T11]  cleanup_net+0x932/0xa40
[   10.670520][   T11]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   10.670730][   T11]  ? __pfx_cleanup_net+0x10/0x10
[   10.670940][   T11]  ? trace_lock_acquire+0x148/0x1f0
[   10.671154][   T11]  ? lock_acquire+0x32/0xc0
[   10.671357][   T11]  ? process_one_work+0xe0b/0x16d0
[   10.671564][   T11]  process_one_work+0xe55/0x16d0
[   10.671773][   T11]  ? __pfx___lock_release+0x10/0x10
[   10.671969][   T11]  ? __pfx_process_one_work+0x10/0x10
[   10.672182][   T11]  ? assign_work+0x16c/0x240
[   10.672381][   T11]  worker_thread+0x58c/0xce0
[   10.672597][   T11]  ? __pfx_worker_thread+0x10/0x10
[   10.672805][   T11]  kthread+0x28a/0x350
[   10.672964][   T11]  ? __pfx_kthread+0x10/0x10
[   10.673181][   T11]  ret_from_fork+0x31/0x70
[   10.673391][   T11]  ? __pfx_kthread+0x10/0x10
[   10.673604][   T11]  ret_from_fork_asm+0x1a/0x30
[   10.673827][   T11]  </TASK>
[   10.673991][   T11] 
[   10.674097][   T11] Allocated by task 226:
[   10.674256][   T11]  kasan_save_stack+0x24/0x50
[   10.674478][   T11]  kasan_save_track+0x14/0x30
[   10.674687][   T11]  __kasan_slab_alloc+0x59/0x70
[   10.674907][   T11]  kmem_cache_alloc_noprof+0x10b/0x350
[   10.675114][   T11]  copy_net_ns+0xc6/0x340
[   10.675260][   T11]  create_new_namespaces+0x35f/0x920
[   10.675460][   T11]  unshare_nsproxy_namespaces+0x8d/0x130
[   10.675667][   T11]  ksys_unshare+0x2a9/0x660
[   10.675875][   T11]  __x64_sys_unshare+0x31/0x40
[   10.676087][   T11]  do_syscall_64+0xc1/0x1d0
[   10.676289][   T11]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   10.676548][   T11] 
[   10.676653][   T11] Freed by task 11:
[   10.676813][   T11]  kasan_save_stack+0x24/0x50
[   10.677044][   T11]  kasan_save_track+0x14/0x30
[   10.677257][   T11]  kasan_save_free_info+0x3b/0x60
[   10.677468][   T11]  __kasan_slab_free+0x38/0x50
[   10.677676][   T11]  kmem_cache_free+0xf8/0x330
[   10.677892][   T11]  cleanup_net+0x5a8/0xa40
[   10.678115][   T11]  process_one_work+0xe55/0x16d0
[   10.678335][   T11]  worker_thread+0x58c/0xce0
[   10.678545][   T11]  kthread+0x28a/0x350
[   10.678718][   T11]  ret_from_fork+0x31/0x70
[   10.678929][   T11]  ret_from_fork_asm+0x1a/0x30
[   10.679140][   T11] 
[   10.679245][   T11] The buggy address belongs to the object at ffff888012200040
[   10.679245][   T11]  which belongs to the cache net_namespace of size 5696
[   10.679790][   T11] The buggy address is located 184 bytes inside of
[   10.679790][   T11]  freed 5696-byte region [ffff888012200040, ffff888012201680)
[   10.680299][   T11] 
[   10.680403][   T11] The buggy address belongs to the physical page:
[   10.680661][   T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888012202fc0 pfn:0x12200
[   10.681086][   T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   10.681405][   T11] flags: 0x80000000000240(workingset|head|node=0|zone=1)
[   10.681682][   T11] page_type: f5(slab)
[   10.681851][   T11] raw: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   10.682221][   T11] raw: ffff888012202fc0 0000000000050002 00000001f5000000 0000000000000000
[   10.682598][   T11] head: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   10.682969][   T11] head: ffff888012202fc0 0000000000050002 00000001f5000000 0000000000000000
[   10.683326][   T11] head: 0080000000000003 ffffea0000488001 ffffffffffffffff 0000000000000000
[   10.683676][   T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
[   10.684039][   T11] page dumped because: kasan: bad access detected
[   10.684293][   T11] 
[   10.684397][   T11] Memory state around the buggy address:
[   10.684601][   T11]  ffff8880121fff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   10.684900][   T11]  ffff888012200000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   10.685189][   T11] >ffff888012200080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.685489][   T11]                                                                 ^
[   10.685790][   T11]  ffff888012200100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.686087][   T11]  ffff888012200180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.686371][   T11] ==================================================================
[   10.686741][   T11] Disabling lock debugging due to kernel taint