[   10.154772][   T11] ==================================================================
[   10.154993][   T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40
[   10.155185][   T11] Read of size 8 at addr ffff8880111680f8 by task kworker/u16:0/11
[   10.155364][   T11] 
[   10.155437][   T11] CPU: 1 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1
[   10.155625][   T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.155782][   T11] Workqueue: netns cleanup_net
[   10.155913][   T11] Call Trace:
[   10.156016][   T11]  <TASK>
[   10.156084][   T11]  dump_stack_lvl+0x82/0xd0
[   10.156212][   T11]  print_address_description.constprop.0+0x2c/0x3b0
[   10.156383][   T11]  ? cleanup_net+0x932/0xa40
[   10.156522][   T11]  print_report+0xb4/0x270
[   10.156647][   T11]  ? kasan_addr_to_slab+0x25/0x80
[   10.156772][   T11]  kasan_report+0xbd/0xf0
[   10.156867][   T11]  ? cleanup_net+0x932/0xa40
[   10.156991][   T11]  cleanup_net+0x932/0xa40
[   10.157146][   T11]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   10.157274][   T11]  ? __pfx_cleanup_net+0x10/0x10
[   10.157404][   T11]  ? trace_lock_acquire+0x148/0x1f0
[   10.157535][   T11]  ? lock_acquire+0x32/0xc0
[   10.157665][   T11]  ? process_one_work+0xe0b/0x16d0
[   10.157792][   T11]  process_one_work+0xe55/0x16d0
[   10.157917][   T11]  ? __pfx___lock_release+0x10/0x10
[   10.158039][   T11]  ? __pfx_process_one_work+0x10/0x10
[   10.158166][   T11]  ? assign_work+0x16c/0x240
[   10.158292][   T11]  worker_thread+0x58c/0xce0
[   10.158425][   T11]  ? __pfx_worker_thread+0x10/0x10
[   10.158551][   T11]  kthread+0x28a/0x350
[   10.158652][   T11]  ? __pfx_kthread+0x10/0x10
[   10.158777][   T11]  ret_from_fork+0x31/0x70
[   10.158905][   T11]  ? __pfx_kthread+0x10/0x10
[   10.159028][   T11]  ret_from_fork_asm+0x1a/0x30
[   10.159156][   T11]  </TASK>
[   10.159251][   T11] 
[   10.159317][   T11] Allocated by task 227:
[   10.159416][   T11]  kasan_save_stack+0x24/0x50
[   10.159545][   T11]  kasan_save_track+0x14/0x30
[   10.159678][   T11]  __kasan_slab_alloc+0x59/0x70
[   10.159803][   T11]  kmem_cache_alloc_noprof+0x10b/0x350
[   10.159932][   T11]  copy_net_ns+0xc6/0x340
[   10.160026][   T11]  create_new_namespaces+0x35f/0x920
[   10.160154][   T11]  unshare_nsproxy_namespaces+0x8d/0x130
[   10.160280][   T11]  ksys_unshare+0x2a9/0x660
[   10.160413][   T11]  __x64_sys_unshare+0x31/0x40
[   10.160547][   T11]  do_syscall_64+0xc1/0x1d0
[   10.160672][   T11]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   10.160826][   T11] 
[   10.160897][   T11] Freed by task 11:
[   10.160990][   T11]  kasan_save_stack+0x24/0x50
[   10.161144][   T11]  kasan_save_track+0x14/0x30
[   10.161286][   T11]  kasan_save_free_info+0x3b/0x60
[   10.161442][   T11]  __kasan_slab_free+0x38/0x50
[   10.161571][   T11]  kmem_cache_free+0xf8/0x330
[   10.161704][   T11]  cleanup_net+0x5a8/0xa40
[   10.161830][   T11]  process_one_work+0xe55/0x16d0
[   10.161953][   T11]  worker_thread+0x58c/0xce0
[   10.162075][   T11]  kthread+0x28a/0x350
[   10.162169][   T11]  ret_from_fork+0x31/0x70
[   10.162294][   T11]  ret_from_fork_asm+0x1a/0x30
[   10.162429][   T11] 
[   10.162495][   T11] The buggy address belongs to the object at ffff888011168040
[   10.162495][   T11]  which belongs to the cache net_namespace of size 5696
[   10.162835][   T11] The buggy address is located 184 bytes inside of
[   10.162835][   T11]  freed 5696-byte region [ffff888011168040, ffff888011169680)
[   10.163141][   T11] 
[   10.163207][   T11] The buggy address belongs to the physical page:
[   10.163357][   T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88801116afc0 pfn:0x11168
[   10.163612][   T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   10.163803][   T11] flags: 0x80000000000240(workingset|head|node=0|zone=1)
[   10.163962][   T11] page_type: f5(slab)
[   10.164061][   T11] raw: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   10.164287][   T11] raw: ffff88801116afc0 0000000000050002 00000001f5000000 0000000000000000
[   10.164517][   T11] head: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   10.164737][   T11] head: ffff88801116afc0 0000000000050002 00000001f5000000 0000000000000000
[   10.164954][   T11] head: 0080000000000003 ffffea0000445a01 ffffffffffffffff 0000000000000000
[   10.165197][   T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
[   10.165423][   T11] page dumped because: kasan: bad access detected
[   10.165574][   T11] 
[   10.165636][   T11] Memory state around the buggy address:
[   10.165756][   T11]  ffff888011167f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   10.165935][   T11]  ffff888011168000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   10.166128][   T11] >ffff888011168080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.166306][   T11]                                                                 ^
[   10.166488][   T11]  ffff888011168100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.166667][   T11]  ffff888011168180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.166845][   T11] ==================================================================
[   10.167214][   T11] Disabling lock debugging due to kernel taint