[   11.636169][   T11] ==================================================================
[   11.636426][   T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40
[   11.636646][   T11] Read of size 8 at addr ffff888004dd00f8 by task kworker/u16:0/11
[   11.636854][   T11] 
[   11.636928][   T11] CPU: 0 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1
[   11.637135][   T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.637322][   T11] Workqueue: netns cleanup_net
[   11.637468][   T11] Call Trace:
[   11.637587][   T11]  <TASK>
[   11.637665][   T11]  dump_stack_lvl+0x82/0xd0
[   11.637821][   T11]  print_address_description.constprop.0+0x2c/0x3b0
[   11.638006][   T11]  ? cleanup_net+0x932/0xa40
[   11.638150][   T11]  print_report+0xb4/0x270
[   11.638288][   T11]  ? kasan_addr_to_slab+0x25/0x80
[   11.638429][   T11]  kasan_report+0xbd/0xf0
[   11.638537][   T11]  ? cleanup_net+0x932/0xa40
[   11.638692][   T11]  cleanup_net+0x932/0xa40
[   11.638828][   T11]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   11.638972][   T11]  ? __pfx_cleanup_net+0x10/0x10
[   11.639112][   T11]  ? trace_lock_acquire+0x148/0x1f0
[   11.639268][   T11]  ? lock_acquire+0x32/0xc0
[   11.639407][   T11]  ? process_one_work+0xe0b/0x16d0
[   11.639553][   T11]  process_one_work+0xe55/0x16d0
[   11.639696][   T11]  ? __pfx___lock_release+0x10/0x10
[   11.639838][   T11]  ? __pfx_process_one_work+0x10/0x10
[   11.639980][   T11]  ? assign_work+0x16c/0x240
[   11.640128][   T11]  worker_thread+0x58c/0xce0
[   11.640275][   T11]  ? __pfx_worker_thread+0x10/0x10
[   11.640420][   T11]  kthread+0x28a/0x350
[   11.640530][   T11]  ? __pfx_kthread+0x10/0x10
[   11.640675][   T11]  ret_from_fork+0x31/0x70
[   11.640820][   T11]  ? __pfx_kthread+0x10/0x10
[   11.640967][   T11]  ret_from_fork_asm+0x1a/0x30
[   11.641111][   T11]  </TASK>
[   11.641224][   T11] 
[   11.641300][   T11] Allocated by task 227:
[   11.641416][   T11]  kasan_save_stack+0x24/0x50
[   11.641558][   T11]  kasan_save_track+0x14/0x30
[   11.641701][   T11]  __kasan_slab_alloc+0x59/0x70
[   11.641841][   T11]  kmem_cache_alloc_noprof+0x10b/0x350
[   11.641987][   T11]  copy_net_ns+0xc6/0x340
[   11.642093][   T11]  create_new_namespaces+0x35f/0x920
[   11.642238][   T11]  unshare_nsproxy_namespaces+0x8d/0x130
[   11.642383][   T11]  ksys_unshare+0x2a9/0x660
[   11.642525][   T11]  __x64_sys_unshare+0x31/0x40
[   11.642666][   T11]  do_syscall_64+0xc1/0x1d0
[   11.642808][   T11]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   11.642984][   T11] 
[   11.643062][   T11] Freed by task 11:
[   11.643171][   T11]  kasan_save_stack+0x24/0x50
[   11.643318][   T11]  kasan_save_track+0x14/0x30
[   11.643454][   T11]  kasan_save_free_info+0x3b/0x60
[   11.643595][   T11]  __kasan_slab_free+0x38/0x50
[   11.643727][   T11]  kmem_cache_free+0xf8/0x330
[   11.643870][   T11]  cleanup_net+0x5a8/0xa40
[   11.644005][   T11]  process_one_work+0xe55/0x16d0
[   11.644144][   T11]  worker_thread+0x58c/0xce0
[   11.644285][   T11]  kthread+0x28a/0x350
[   11.644392][   T11]  ret_from_fork+0x31/0x70
[   11.644532][   T11]  ret_from_fork_asm+0x1a/0x30
[   11.644671][   T11] 
[   11.644751][   T11] The buggy address belongs to the object at ffff888004dd0040
[   11.644751][   T11]  which belongs to the cache net_namespace of size 5696
[   11.645133][   T11] The buggy address is located 184 bytes inside of
[   11.645133][   T11]  freed 5696-byte region [ffff888004dd0040, ffff888004dd1680)
[   11.645462][   T11] 
[   11.645533][   T11] The buggy address belongs to the physical page:
[   11.645704][   T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888004dd2fc0 pfn:0x4dd0
[   11.645983][   T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   11.646195][   T11] flags: 0x80000000000240(workingset|head|node=0|zone=1)
[   11.646374][   T11] page_type: f5(slab)
[   11.646485][   T11] raw: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   11.646734][   T11] raw: ffff888004dd2fc0 0000000000050002 00000001f5000000 0000000000000000
[   11.646992][   T11] head: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   11.647247][   T11] head: ffff888004dd2fc0 0000000000050002 00000001f5000000 0000000000000000
[   11.647494][   T11] head: 0080000000000003 ffffea0000137401 ffffffffffffffff 0000000000000000
[   11.647736][   T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
[   11.647976][   T11] page dumped because: kasan: bad access detected
[   11.648150][   T11] 
[   11.648223][   T11] Memory state around the buggy address:
[   11.648358][   T11]  ffff888004dcff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   11.648564][   T11]  ffff888004dd0000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   11.648765][   T11] >ffff888004dd0080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   11.648978][   T11]                                                                 ^
[   11.649183][   T11]  ffff888004dd0100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   11.649397][   T11]  ffff888004dd0180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   11.649614][   T11] ==================================================================
[   11.649856][   T11] Disabling lock debugging due to kernel taint
[   16.049891][    C2] TCP: TCP-AO: the keyid 100 from SYN packet is not present - not sending SYNACK