[   10.876075][   T65] ==================================================================
[   10.876407][   T65] BUG: KASAN: slab-use-after-free in cleanup_net+0xa5d/0xb90
[   10.876702][   T65] Read of size 8 at addr ffff88800ce100f8 by task kworker/u16:1/65
[   10.876977][   T65] 
[   10.877084][   T65] CPU: 2 UID: 0 PID: 65 Comm: kworker/u16:1 Not tainted 6.12.0-virtme #1
[   10.877298][   T65] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.877470][   T65] Workqueue: netns cleanup_net
[   10.877613][   T65] Call Trace:
[   10.877720][   T65]  <TASK>
[   10.877795][   T65]  dump_stack_lvl+0x82/0xd0
[   10.877939][   T65]  print_address_description.constprop.0+0x2c/0x3b0
[   10.878112][   T65]  ? cleanup_net+0xa5d/0xb90
[   10.878251][   T65]  print_report+0xb4/0x270
[   10.878388][   T65]  ? kasan_addr_to_slab+0x25/0x80
[   10.878524][   T65]  kasan_report+0xbd/0xf0
[   10.878630][   T65]  ? cleanup_net+0xa5d/0xb90
[   10.878770][   T65]  cleanup_net+0xa5d/0xb90
[   10.878907][   T65]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   10.879048][   T65]  ? __pfx_cleanup_net+0x10/0x10
[   10.879188][   T65]  ? trace_lock_acquire+0x148/0x1f0
[   10.879326][   T65]  ? lock_acquire+0x32/0xc0
[   10.879468][   T65]  ? process_one_work+0xe0b/0x16d0
[   10.879612][   T65]  process_one_work+0xe55/0x16d0
[   10.879753][   T65]  ? __pfx___lock_release+0x10/0x10
[   10.879891][   T65]  ? __pfx_process_one_work+0x10/0x10
[   10.880030][   T65]  ? assign_work+0x16c/0x240
[   10.880166][   T65]  worker_thread+0x58c/0xce0
[   10.880305][   T65]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[   10.880477][   T65]  ? __pfx_worker_thread+0x10/0x10
[   10.880613][   T65]  ? __pfx_worker_thread+0x10/0x10
[   10.880748][   T65]  kthread+0x28a/0x350
[   10.880853][   T65]  ? __pfx_kthread+0x10/0x10
[   10.880993][   T65]  ret_from_fork+0x31/0x70
[   10.881129][   T65]  ? __pfx_kthread+0x10/0x10
[   10.881264][   T65]  ret_from_fork_asm+0x1a/0x30
[   10.881405][   T65]  </TASK>
[   10.881510][   T65] 
[   10.881581][   T65] Allocated by task 260:
[   10.881685][   T65]  kasan_save_stack+0x24/0x50
[   10.881822][   T65]  kasan_save_track+0x14/0x30
[   10.881955][   T65]  __kasan_slab_alloc+0x59/0x70
[   10.882096][   T65]  kmem_cache_alloc_noprof+0x10b/0x350
[   10.882232][   T65]  copy_net_ns+0xc6/0x540
[   10.882335][   T65]  create_new_namespaces+0x35f/0x920
[   10.882472][   T65]  unshare_nsproxy_namespaces+0x8a/0x1b0
[   10.882609][   T65]  ksys_unshare+0x2c4/0x6e0
[   10.882746][   T65]  __x64_sys_unshare+0x31/0x40
[   10.882881][   T65]  do_syscall_64+0xc1/0x1d0
[   10.883017][   T65]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   10.883186][   T65] 
[   10.883254][   T65] Freed by task 65:
[   10.883357][   T65]  kasan_save_stack+0x24/0x50
[   10.883492][   T65]  kasan_save_track+0x14/0x30
[   10.883626][   T65]  kasan_save_free_info+0x3b/0x60
[   10.883762][   T65]  __kasan_slab_free+0x38/0x50
[   10.883895][   T65]  kmem_cache_free+0xf8/0x330
[   10.884030][   T65]  cleanup_net+0x5a8/0xb90
[   10.884165][   T65]  process_one_work+0xe55/0x16d0
[   10.884299][   T65]  worker_thread+0x58c/0xce0
[   10.884451][   T65]  kthread+0x28a/0x350
[   10.884553][   T65]  ret_from_fork+0x31/0x70
[   10.884689][   T65]  ret_from_fork_asm+0x1a/0x30
[   10.884824][   T65] 
[   10.884895][   T65] The buggy address belongs to the object at ffff88800ce10040
[   10.884895][   T65]  which belongs to the cache net_namespace of size 6528
[   10.885251][   T65] The buggy address is located 184 bytes inside of
[   10.885251][   T65]  freed 6528-byte region [ffff88800ce10040, ffff88800ce119c0)
[   10.885576][   T65] 
[   10.885645][   T65] The buggy address belongs to the physical page:
[   10.885813][   T65] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800ce13640 pfn:0xce10
[   10.886085][   T65] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   10.886297][   T65] flags: 0x80000000000240(workingset|head|node=0|zone=1)
[   10.886472][   T65] page_type: f5(slab)
[   10.886581][   T65] raw: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088
[   10.886829][   T65] raw: ffff88800ce13640 0000000000040002 00000001f5000000 0000000000000000
[   10.887072][   T65] head: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088
[   10.887313][   T65] head: ffff88800ce13640 0000000000040002 00000001f5000000 0000000000000000
[   10.887558][   T65] head: 0080000000000003 ffffea0000338401 ffffffffffffffff 0000000000000000
[   10.887802][   T65] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
[   10.888048][   T65] page dumped because: kasan: bad access detected
[   10.888219][   T65] 
[   10.888290][   T65] Memory state around the buggy address:
[   10.888421][   T65]  ffff88800ce0ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   10.888625][   T65]  ffff88800ce10000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   10.888821][   T65] >ffff88800ce10080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.889021][   T65]                                                                 ^
[   10.889221][   T65]  ffff88800ce10100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.889423][   T65]  ffff88800ce10180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.889625][   T65] ==================================================================
[   10.889883][   T65] Disabling lock debugging due to kernel taint