[   10.775394][   T11] ==================================================================
[   10.775731][   T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40
[   10.776034][   T11] Read of size 8 at addr ffff8880056180f8 by task kworker/u16:0/11
[   10.776328][   T11] 
[   10.776435][   T11] CPU: 1 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1
[   10.776752][   T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.777011][   T11] Workqueue: netns cleanup_net
[   10.777235][   T11] Call Trace:
[   10.777393][   T11]  <TASK>
[   10.777505][   T11]  dump_stack_lvl+0x82/0xd0
[   10.777716][   T11]  print_address_description.constprop.0+0x2c/0x3b0
[   10.777970][   T11]  ? cleanup_net+0x932/0xa40
[   10.778182][   T11]  print_report+0xb4/0x270
[   10.778396][   T11]  ? kasan_addr_to_slab+0x25/0x80
[   10.778603][   T11]  kasan_report+0xbd/0xf0
[   10.778759][   T11]  ? cleanup_net+0x932/0xa40
[   10.778974][   T11]  cleanup_net+0x932/0xa40
[   10.779181][   T11]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   10.779392][   T11]  ? __pfx_cleanup_net+0x10/0x10
[   10.779593][   T11]  ? trace_lock_acquire+0x148/0x1f0
[   10.779801][   T11]  ? lock_acquire+0x32/0xc0
[   10.780007][   T11]  ? process_one_work+0xe0b/0x16d0
[   10.780222][   T11]  process_one_work+0xe55/0x16d0
[   10.780448][   T11]  ? __pfx___lock_release+0x10/0x10
[   10.780657][   T11]  ? __pfx_process_one_work+0x10/0x10
[   10.780869][   T11]  ? assign_work+0x16c/0x240
[   10.781081][   T11]  worker_thread+0x58c/0xce0
[   10.781297][   T11]  ? __pfx_worker_thread+0x10/0x10
[   10.781499][   T11]  kthread+0x28a/0x350
[   10.781659][   T11]  ? __pfx_kthread+0x10/0x10
[   10.781860][   T11]  ret_from_fork+0x31/0x70
[   10.782065][   T11]  ? __pfx_kthread+0x10/0x10
[   10.782266][   T11]  ret_from_fork_asm+0x1a/0x30
[   10.782483][   T11]  </TASK>
[   10.782642][   T11] 
[   10.782751][   T11] Allocated by task 226:
[   10.782909][   T11]  kasan_save_stack+0x24/0x50
[   10.783121][   T11]  kasan_save_track+0x14/0x30
[   10.783326][   T11]  __kasan_slab_alloc+0x59/0x70
[   10.783529][   T11]  kmem_cache_alloc_noprof+0x10b/0x350
[   10.783743][   T11]  copy_net_ns+0xc6/0x340
[   10.783897][   T11]  create_new_namespaces+0x35f/0x920
[   10.784109][   T11]  unshare_nsproxy_namespaces+0x8d/0x130
[   10.784312][   T11]  ksys_unshare+0x2a9/0x660
[   10.784521][   T11]  __x64_sys_unshare+0x31/0x40
[   10.784729][   T11]  do_syscall_64+0xc1/0x1d0
[   10.784938][   T11]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   10.785188][   T11] 
[   10.785292][   T11] Freed by task 11:
[   10.785436][   T11]  kasan_save_stack+0x24/0x50
[   10.785645][   T11]  kasan_save_track+0x14/0x30
[   10.785872][   T11]  kasan_save_free_info+0x3b/0x60
[   10.786067][   T11]  __kasan_slab_free+0x38/0x50
[   10.786256][   T11]  kmem_cache_free+0xf8/0x330
[   10.786438][   T11]  cleanup_net+0x5a8/0xa40
[   10.786626][   T11]  process_one_work+0xe55/0x16d0
[   10.786822][   T11]  worker_thread+0x58c/0xce0
[   10.787007][   T11]  kthread+0x28a/0x350
[   10.787151][   T11]  ret_from_fork+0x31/0x70
[   10.787337][   T11]  ret_from_fork_asm+0x1a/0x30
[   10.787523][   T11] 
[   10.787620][   T11] The buggy address belongs to the object at ffff888005618040
[   10.787620][   T11]  which belongs to the cache net_namespace of size 5696
[   10.788096][   T11] The buggy address is located 184 bytes inside of
[   10.788096][   T11]  freed 5696-byte region [ffff888005618040, ffff888005619680)
[   10.788550][   T11] 
[   10.788648][   T11] The buggy address belongs to the physical page:
[   10.788882][   T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800561afc0 pfn:0x5618
[   10.789253][   T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   10.789537][   T11] flags: 0x80000000000240(workingset|head|node=0|zone=1)
[   10.789778][   T11] page_type: f5(slab)
[   10.789923][   T11] raw: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   10.790262][   T11] raw: ffff88800561afc0 0000000000050002 00000001f5000000 0000000000000000
[   10.790600][   T11] head: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   10.790940][   T11] head: ffff88800561afc0 0000000000050002 00000001f5000000 0000000000000000
[   10.791270][   T11] head: 0080000000000003 ffffea0000158601 ffffffffffffffff 0000000000000000
[   10.791597][   T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
[   10.791981][   T11] page dumped because: kasan: bad access detected
[   10.792234][   T11] 
[   10.792334][   T11] Memory state around the buggy address:
[   10.792536][   T11]  ffff888005617f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   10.792833][   T11]  ffff888005618000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   10.793114][   T11] >ffff888005618080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.793409][   T11]                                                                 ^
[   10.793694][   T11]  ffff888005618100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.793971][   T11]  ffff888005618180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.794258][   T11] ==================================================================
[   10.794630][   T11] Disabling lock debugging due to kernel taint