[   10.354054][   T11] ==================================================================
[   10.354397][   T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40
[   10.354633][   T11] Read of size 8 at addr ffff8880093800f8 by task kworker/u16:0/11
[   10.354827][   T11] 
[   10.354896][   T11] CPU: 0 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1
[   10.355099][   T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.355262][   T11] Workqueue: netns cleanup_net
[   10.355398][   T11] Call Trace:
[   10.355498][   T11]  <TASK>
[   10.355565][   T11]  dump_stack_lvl+0x82/0xd0
[   10.355710][   T11]  print_address_description.constprop.0+0x2c/0x3b0
[   10.355889][   T11]  ? cleanup_net+0x932/0xa40
[   10.356033][   T11]  print_report+0xb4/0x270
[   10.356177][   T11]  ? kasan_addr_to_slab+0x25/0x80
[   10.356308][   T11]  kasan_report+0xbd/0xf0
[   10.356403][   T11]  ? cleanup_net+0x932/0xa40
[   10.356531][   T11]  cleanup_net+0x932/0xa40
[   10.356661][   T11]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   10.356796][   T11]  ? __pfx_cleanup_net+0x10/0x10
[   10.356928][   T11]  ? trace_lock_acquire+0x148/0x1f0
[   10.357072][   T11]  ? lock_acquire+0x32/0xc0
[   10.357195][   T11]  ? process_one_work+0xe0b/0x16d0
[   10.357324][   T11]  process_one_work+0xe55/0x16d0
[   10.357463][   T11]  ? __pfx___lock_release+0x10/0x10
[   10.357594][   T11]  ? __pfx_process_one_work+0x10/0x10
[   10.357724][   T11]  ? assign_work+0x16c/0x240
[   10.357855][   T11]  worker_thread+0x58c/0xce0
[   10.357991][   T11]  ? __pfx_worker_thread+0x10/0x10
[   10.358116][   T11]  kthread+0x28a/0x350
[   10.358213][   T11]  ? __pfx_kthread+0x10/0x10
[   10.358343][   T11]  ret_from_fork+0x31/0x70
[   10.358473][   T11]  ? __pfx_kthread+0x10/0x10
[   10.358626][   T11]  ret_from_fork_asm+0x1a/0x30
[   10.358762][   T11]  </TASK>
[   10.358862][   T11] 
[   10.358927][   T11] Allocated by task 225:
[   10.359027][   T11]  kasan_save_stack+0x24/0x50
[   10.359155][   T11]  kasan_save_track+0x14/0x30
[   10.359279][   T11]  __kasan_slab_alloc+0x59/0x70
[   10.359410][   T11]  kmem_cache_alloc_noprof+0x10b/0x350
[   10.359538][   T11]  copy_net_ns+0xc6/0x340
[   10.359638][   T11]  create_new_namespaces+0x35f/0x920
[   10.359784][   T11]  unshare_nsproxy_namespaces+0x8d/0x130
[   10.359929][   T11]  ksys_unshare+0x2a9/0x660
[   10.360064][   T11]  __x64_sys_unshare+0x31/0x40
[   10.360187][   T11]  do_syscall_64+0xc1/0x1d0
[   10.360322][   T11]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   10.360495][   T11] 
[   10.360564][   T11] Freed by task 11:
[   10.360659][   T11]  kasan_save_stack+0x24/0x50
[   10.360810][   T11]  kasan_save_track+0x14/0x30
[   10.360934][   T11]  kasan_save_free_info+0x3b/0x60
[   10.361087][   T11]  __kasan_slab_free+0x38/0x50
[   10.361229][   T11]  kmem_cache_free+0xf8/0x330
[   10.361356][   T11]  cleanup_net+0x5a8/0xa40
[   10.361497][   T11]  process_one_work+0xe55/0x16d0
[   10.361649][   T11]  worker_thread+0x58c/0xce0
[   10.361799][   T11]  kthread+0x28a/0x350
[   10.361911][   T11]  ret_from_fork+0x31/0x70
[   10.362053][   T11]  ret_from_fork_asm+0x1a/0x30
[   10.362204][   T11] 
[   10.362268][   T11] The buggy address belongs to the object at ffff888009380040
[   10.362268][   T11]  which belongs to the cache net_namespace of size 5696
[   10.362616][   T11] The buggy address is located 184 bytes inside of
[   10.362616][   T11]  freed 5696-byte region [ffff888009380040, ffff888009381680)
[   10.362940][   T11] 
[   10.363008][   T11] The buggy address belongs to the physical page:
[   10.363190][   T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888009382fc0 pfn:0x9380
[   10.363470][   T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   10.363662][   T11] flags: 0x80000000000240(workingset|head|node=0|zone=1)
[   10.363845][   T11] page_type: f5(slab)
[   10.363968][   T11] raw: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   10.364203][   T11] raw: ffff888009382fc0 0000000000050002 00000001f5000000 0000000000000000
[   10.364429][   T11] head: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   10.364704][   T11] head: ffff888009382fc0 0000000000050002 00000001f5000000 0000000000000000
[   10.364983][   T11] head: 0080000000000003 ffffea000024e001 ffffffffffffffff 0000000000000000
[   10.365208][   T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
[   10.365427][   T11] page dumped because: kasan: bad access detected
[   10.365585][   T11] 
[   10.365648][   T11] Memory state around the buggy address:
[   10.365780][   T11]  ffff88800937ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   10.365965][   T11]  ffff888009380000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   10.366159][   T11] >ffff888009380080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.366341][   T11]                                                                 ^
[   10.366540][   T11]  ffff888009380100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.366737][   T11]  ffff888009380180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.366956][   T11] ==================================================================
[   10.367188][   T11] Disabling lock debugging due to kernel taint