[   10.071797][   T11] ==================================================================
[   10.072043][   T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40
[   10.072250][   T11] Read of size 8 at addr ffff888004f380f8 by task kworker/u16:0/11
[   10.072459][   T11] 
[   10.072533][   T11] CPU: 0 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1
[   10.072756][   T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.072935][   T11] Workqueue: netns cleanup_net
[   10.073083][   T11] Call Trace:
[   10.073191][   T11]  <TASK>
[   10.073265][   T11]  dump_stack_lvl+0x82/0xd0
[   10.073412][   T11]  print_address_description.constprop.0+0x2c/0x3b0
[   10.073589][   T11]  ? cleanup_net+0x932/0xa40
[   10.073795][   T11]  print_report+0xb4/0x270
[   10.073936][   T11]  ? kasan_addr_to_slab+0x25/0x80
[   10.074081][   T11]  kasan_report+0xbd/0xf0
[   10.074190][   T11]  ? cleanup_net+0x932/0xa40
[   10.074332][   T11]  cleanup_net+0x932/0xa40
[   10.074468][   T11]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   10.074607][   T11]  ? __pfx_cleanup_net+0x10/0x10
[   10.074747][   T11]  ? trace_lock_acquire+0x148/0x1f0
[   10.074897][   T11]  ? lock_acquire+0x32/0xc0
[   10.075035][   T11]  ? process_one_work+0xe0b/0x16d0
[   10.075175][   T11]  process_one_work+0xe55/0x16d0
[   10.075316][   T11]  ? __pfx___lock_release+0x10/0x10
[   10.075460][   T11]  ? __pfx_process_one_work+0x10/0x10
[   10.075601][   T11]  ? assign_work+0x16c/0x240
[   10.075740][   T11]  worker_thread+0x58c/0xce0
[   10.075885][   T11]  ? __pfx_worker_thread+0x10/0x10
[   10.076022][   T11]  kthread+0x28a/0x350
[   10.076129][   T11]  ? __pfx_kthread+0x10/0x10
[   10.076267][   T11]  ret_from_fork+0x31/0x70
[   10.076413][   T11]  ? __pfx_kthread+0x10/0x10
[   10.076553][   T11]  ret_from_fork_asm+0x1a/0x30
[   10.076697][   T11]  </TASK>
[   10.076803][   T11] 
[   10.076874][   T11] Allocated by task 227:
[   10.076979][   T11]  kasan_save_stack+0x24/0x50
[   10.077118][   T11]  kasan_save_track+0x14/0x30
[   10.077256][   T11]  __kasan_slab_alloc+0x59/0x70
[   10.077392][   T11]  kmem_cache_alloc_noprof+0x10b/0x350
[   10.077530][   T11]  copy_net_ns+0xc6/0x340
[   10.077637][   T11]  create_new_namespaces+0x35f/0x920
[   10.077777][   T11]  unshare_nsproxy_namespaces+0x8d/0x130
[   10.077915][   T11]  ksys_unshare+0x2a9/0x660
[   10.078055][   T11]  __x64_sys_unshare+0x31/0x40
[   10.078191][   T11]  do_syscall_64+0xc1/0x1d0
[   10.078336][   T11]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   10.078506][   T11] 
[   10.078577][   T11] Freed by task 11:
[   10.078679][   T11]  kasan_save_stack+0x24/0x50
[   10.078820][   T11]  kasan_save_track+0x14/0x30
[   10.079039][   T11]  kasan_save_free_info+0x3b/0x60
[   10.079178][   T11]  __kasan_slab_free+0x38/0x50
[   10.079328][   T11]  kmem_cache_free+0xf8/0x330
[   10.079466][   T11]  cleanup_net+0x5a8/0xa40
[   10.079601][   T11]  process_one_work+0xe55/0x16d0
[   10.079738][   T11]  worker_thread+0x58c/0xce0
[   10.079877][   T11]  kthread+0x28a/0x350
[   10.079979][   T11]  ret_from_fork+0x31/0x70
[   10.080115][   T11]  ret_from_fork_asm+0x1a/0x30
[   10.080251][   T11] 
[   10.080321][   T11] The buggy address belongs to the object at ffff888004f38040
[   10.080321][   T11]  which belongs to the cache net_namespace of size 5696
[   10.080687][   T11] The buggy address is located 184 bytes inside of
[   10.080687][   T11]  freed 5696-byte region [ffff888004f38040, ffff888004f39680)
[   10.081016][   T11] 
[   10.081082][   T11] The buggy address belongs to the physical page:
[   10.081253][   T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888004f3afc0 pfn:0x4f38
[   10.081531][   T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   10.081739][   T11] flags: 0x80000000000240(workingset|head|node=0|zone=1)
[   10.081913][   T11] page_type: f5(slab)
[   10.082023][   T11] raw: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   10.082275][   T11] raw: ffff888004f3afc0 0000000000050002 00000001f5000000 0000000000000000
[   10.082519][   T11] head: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   10.082762][   T11] head: ffff888004f3afc0 0000000000050002 00000001f5000000 0000000000000000
[   10.083004][   T11] head: 0080000000000003 ffffea000013ce01 ffffffffffffffff 0000000000000000
[   10.083245][   T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
[   10.083485][   T11] page dumped because: kasan: bad access detected
[   10.083653][   T11] 
[   10.083722][   T11] Memory state around the buggy address:
[   10.083861][   T11]  ffff888004f37f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   10.084057][   T11]  ffff888004f38000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   10.084258][   T11] >ffff888004f38080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.084453][   T11]                                                                 ^
[   10.084650][   T11]  ffff888004f38100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.084847][   T11]  ffff888004f38180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.085052][   T11] ==================================================================
[   10.085265][   T11] Disabling lock debugging due to kernel taint