[   11.035037][   T11] ==================================================================
[   11.035283][   T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40
[   11.035499][   T11] Read of size 8 at addr ffff88800ab400f8 by task kworker/u16:0/11
[   11.035699][   T11] 
[   11.035771][   T11] CPU: 3 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1
[   11.035978][   T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.036152][   T11] Workqueue: netns cleanup_net
[   11.036301][   T11] Call Trace:
[   11.036407][   T11]  <TASK>
[   11.036484][   T11]  dump_stack_lvl+0x82/0xd0
[   11.036655][   T11]  print_address_description.constprop.0+0x2c/0x3b0
[   11.036895][   T11]  ? cleanup_net+0x932/0xa40
[   11.037103][   T11]  print_report+0xb4/0x270
[   11.037299][   T11]  ? kasan_addr_to_slab+0x25/0x80
[   11.037505][   T11]  kasan_report+0xbd/0xf0
[   11.037666][   T11]  ? cleanup_net+0x932/0xa40
[   11.037877][   T11]  cleanup_net+0x932/0xa40
[   11.038084][   T11]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   11.038290][   T11]  ? __pfx_cleanup_net+0x10/0x10
[   11.038497][   T11]  ? trace_lock_acquire+0x148/0x1f0
[   11.038703][   T11]  ? lock_acquire+0x32/0xc0
[   11.038908][   T11]  ? process_one_work+0xe0b/0x16d0
[   11.039126][   T11]  process_one_work+0xe55/0x16d0
[   11.039337][   T11]  ? __pfx___lock_release+0x10/0x10
[   11.039554][   T11]  ? __pfx_process_one_work+0x10/0x10
[   11.039764][   T11]  ? assign_work+0x16c/0x240
[   11.039970][   T11]  worker_thread+0x58c/0xce0
[   11.040181][   T11]  ? __pfx_worker_thread+0x10/0x10
[   11.040386][   T11]  kthread+0x28a/0x350
[   11.040545][   T11]  ? __pfx_kthread+0x10/0x10
[   11.040746][   T11]  ret_from_fork+0x31/0x70
[   11.040951][   T11]  ? __pfx_kthread+0x10/0x10
[   11.041157][   T11]  ret_from_fork_asm+0x1a/0x30
[   11.041371][   T11]  </TASK>
[   11.041514][   T11] 
[   11.041621][   T11] Allocated by task 227:
[   11.041764][   T11]  kasan_save_stack+0x24/0x50
[   11.041968][   T11]  kasan_save_track+0x14/0x30
[   11.042159][   T11]  __kasan_slab_alloc+0x59/0x70
[   11.042361][   T11]  kmem_cache_alloc_noprof+0x10b/0x350
[   11.042564][   T11]  copy_net_ns+0xc6/0x340
[   11.042718][   T11]  create_new_namespaces+0x35f/0x920
[   11.042915][   T11]  unshare_nsproxy_namespaces+0x8d/0x130
[   11.043116][   T11]  ksys_unshare+0x2a9/0x660
[   11.043324][   T11]  __x64_sys_unshare+0x31/0x40
[   11.043525][   T11]  do_syscall_64+0xc1/0x1d0
[   11.043737][   T11]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   11.043990][   T11] 
[   11.044096][   T11] Freed by task 11:
[   11.044246][   T11]  kasan_save_stack+0x24/0x50
[   11.044448][   T11]  kasan_save_track+0x14/0x30
[   11.044656][   T11]  kasan_save_free_info+0x3b/0x60
[   11.044859][   T11]  __kasan_slab_free+0x38/0x50
[   11.045060][   T11]  kmem_cache_free+0xf8/0x330
[   11.045269][   T11]  cleanup_net+0x5a8/0xa40
[   11.045449][   T11]  process_one_work+0xe55/0x16d0
[   11.045651][   T11]  worker_thread+0x58c/0xce0
[   11.045840][   T11]  kthread+0x28a/0x350
[   11.045980][   T11]  ret_from_fork+0x31/0x70
[   11.046183][   T11]  ret_from_fork_asm+0x1a/0x30
[   11.046374][   T11] 
[   11.046478][   T11] The buggy address belongs to the object at ffff88800ab40040
[   11.046478][   T11]  which belongs to the cache net_namespace of size 5696
[   11.046986][   T11] The buggy address is located 184 bytes inside of
[   11.046986][   T11]  freed 5696-byte region [ffff88800ab40040, ffff88800ab41680)
[   11.047464][   T11] 
[   11.047560][   T11] The buggy address belongs to the physical page:
[   11.047733][   T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800ab42fc0 pfn:0xab40
[   11.048015][   T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   11.048230][   T11] flags: 0x80000000000240(workingset|head|node=0|zone=1)
[   11.048394][   T11] page_type: f5(slab)
[   11.048501][   T11] raw: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   11.048737][   T11] raw: ffff88800ab42fc0 0000000000050002 00000001f5000000 0000000000000000
[   11.048966][   T11] head: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   11.049186][   T11] head: ffff88800ab42fc0 0000000000050002 00000001f5000000 0000000000000000
[   11.049479][   T11] head: 0080000000000003 ffffea00002ad001 ffffffffffffffff 0000000000000000
[   11.049764][   T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
[   11.050051][   T11] page dumped because: kasan: bad access detected
[   11.050255][   T11] 
[   11.050335][   T11] Memory state around the buggy address:
[   11.050491][   T11]  ffff88800ab3ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   11.050721][   T11]  ffff88800ab40000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   11.050960][   T11] >ffff88800ab40080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   11.051192][   T11]                                                                 ^
[   11.051427][   T11]  ffff88800ab40100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   11.051663][   T11]  ffff88800ab40180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   11.051896][   T11] ==================================================================
[   11.052216][   T11] Disabling lock debugging due to kernel taint