[   10.670739][   T65] ==================================================================
[   10.671028][   T65] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40
[   10.671260][   T65] Read of size 8 at addr ffff8880051180f8 by task kworker/u16:1/65
[   10.671485][   T65] 
[   10.671560][   T65] CPU: 0 UID: 0 PID: 65 Comm: kworker/u16:1 Not tainted 6.12.0-virtme #1
[   10.671779][   T65] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.671956][   T65] Workqueue: netns cleanup_net
[   10.672106][   T65] Call Trace:
[   10.672213][   T65]  <TASK>
[   10.672286][   T65]  dump_stack_lvl+0x82/0xd0
[   10.672435][   T65]  print_address_description.constprop.0+0x2c/0x3b0
[   10.672616][   T65]  ? cleanup_net+0x932/0xa40
[   10.672758][   T65]  print_report+0xb4/0x270
[   10.672893][   T65]  ? kasan_addr_to_slab+0x25/0x80
[   10.673030][   T65]  kasan_report+0xbd/0xf0
[   10.673140][   T65]  ? cleanup_net+0x932/0xa40
[   10.673285][   T65]  cleanup_net+0x932/0xa40
[   10.673433][   T65]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   10.673574][   T65]  ? __pfx_cleanup_net+0x10/0x10
[   10.673713][   T65]  ? trace_lock_acquire+0x148/0x1f0
[   10.673863][   T65]  ? lock_acquire+0x32/0xc0
[   10.674008][   T65]  ? process_one_work+0xe0b/0x16d0
[   10.674160][   T65]  process_one_work+0xe55/0x16d0
[   10.674307][   T65]  ? __pfx___lock_release+0x10/0x10
[   10.674453][   T65]  ? __pfx_process_one_work+0x10/0x10
[   10.674597][   T65]  ? assign_work+0x16c/0x240
[   10.674733][   T65]  worker_thread+0x58c/0xce0
[   10.674874][   T65]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[   10.675063][   T65]  ? __pfx_worker_thread+0x10/0x10
[   10.675205][   T65]  ? __pfx_worker_thread+0x10/0x10
[   10.675346][   T65]  kthread+0x28a/0x350
[   10.675466][   T65]  ? __pfx_kthread+0x10/0x10
[   10.675606][   T65]  ret_from_fork+0x31/0x70
[   10.675750][   T65]  ? __pfx_kthread+0x10/0x10
[   10.675887][   T65]  ret_from_fork_asm+0x1a/0x30
[   10.676031][   T65]  </TASK>
[   10.676145][   T65] 
[   10.676222][   T65] Allocated by task 226:
[   10.676341][   T65]  kasan_save_stack+0x24/0x50
[   10.676486][   T65]  kasan_save_track+0x14/0x30
[   10.676634][   T65]  __kasan_slab_alloc+0x59/0x70
[   10.676780][   T65]  kmem_cache_alloc_noprof+0x10b/0x350
[   10.676922][   T65]  copy_net_ns+0xc6/0x340
[   10.677031][   T65]  create_new_namespaces+0x35f/0x920
[   10.677179][   T65]  unshare_nsproxy_namespaces+0x8d/0x130
[   10.677322][   T65]  ksys_unshare+0x2a9/0x660
[   10.677472][   T65]  __x64_sys_unshare+0x31/0x40
[   10.677627][   T65]  do_syscall_64+0xc1/0x1d0
[   10.677777][   T65]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   10.677967][   T65] 
[   10.678043][   T65] Freed by task 65:
[   10.678154][   T65]  kasan_save_stack+0x24/0x50
[   10.678308][   T65]  kasan_save_track+0x14/0x30
[   10.678450][   T65]  kasan_save_free_info+0x3b/0x60
[   10.678594][   T65]  __kasan_slab_free+0x38/0x50
[   10.678732][   T65]  kmem_cache_free+0xf8/0x330
[   10.678867][   T65]  cleanup_net+0x5a8/0xa40
[   10.679004][   T65]  process_one_work+0xe55/0x16d0
[   10.679156][   T65]  worker_thread+0x58c/0xce0
[   10.679301][   T65]  kthread+0x28a/0x350
[   10.679411][   T65]  ret_from_fork+0x31/0x70
[   10.679562][   T65]  ret_from_fork_asm+0x1a/0x30
[   10.679713][   T65] 
[   10.679789][   T65] The buggy address belongs to the object at ffff888005118040
[   10.679789][   T65]  which belongs to the cache net_namespace of size 5696
[   10.680170][   T65] The buggy address is located 184 bytes inside of
[   10.680170][   T65]  freed 5696-byte region [ffff888005118040, ffff888005119680)
[   10.680532][   T65] 
[   10.680610][   T65] The buggy address belongs to the physical page:
[   10.680791][   T65] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800511afc0 pfn:0x5118
[   10.681095][   T65] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   10.681325][   T65] flags: 0x80000000000240(workingset|head|node=0|zone=1)
[   10.681542][   T65] page_type: f5(slab)
[   10.681665][   T65] raw: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   10.681929][   T65] raw: ffff88800511afc0 0000000000050002 00000001f5000000 0000000000000000
[   10.682186][   T65] head: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   10.682455][   T65] head: ffff88800511afc0 0000000000050002 00000001f5000000 0000000000000000
[   10.682726][   T65] head: 0080000000000003 ffffea0000144601 ffffffffffffffff 0000000000000000
[   10.682985][   T65] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
[   10.683242][   T65] page dumped because: kasan: bad access detected
[   10.683429][   T65] 
[   10.683505][   T65] Memory state around the buggy address:
[   10.683672][   T65]  ffff888005117f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   10.683891][   T65]  ffff888005118000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   10.684114][   T65] >ffff888005118080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.684336][   T65]                                                                 ^
[   10.684556][   T65]  ffff888005118100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.684778][   T65]  ffff888005118180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.684996][   T65] ==================================================================
[   10.685251][   T65] Disabling lock debugging due to kernel taint
[   59.871725][  T224] perl (224) used greatest stack depth: 24360 bytes left