[   11.537608][   T66] ==================================================================
[   11.537870][   T66] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40
[   11.538097][   T66] Read of size 8 at addr ffff88800a1000f8 by task kworker/u16:1/66
[   11.538322][   T66] 
[   11.538388][   T66] CPU: 2 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.12.0-virtme #1
[   11.538576][   T66] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.538730][   T66] Workqueue: netns cleanup_net
[   11.538865][   T66] Call Trace:
[   11.538963][   T66]  <TASK>
[   11.539030][   T66]  dump_stack_lvl+0x82/0xd0
[   11.539160][   T66]  print_address_description.constprop.0+0x2c/0x3b0
[   11.539319][   T66]  ? cleanup_net+0x932/0xa40
[   11.539448][   T66]  print_report+0xb4/0x270
[   11.539571][   T66]  ? kasan_addr_to_slab+0x25/0x80
[   11.539696][   T66]  kasan_report+0xbd/0xf0
[   11.539792][   T66]  ? cleanup_net+0x932/0xa40
[   11.539917][   T66]  cleanup_net+0x932/0xa40
[   11.540040][   T66]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   11.540168][   T66]  ? __pfx_cleanup_net+0x10/0x10
[   11.540291][   T66]  ? trace_lock_acquire+0x148/0x1f0
[   11.540416][   T66]  ? lock_acquire+0x32/0xc0
[   11.540537][   T66]  ? process_one_work+0xe0b/0x16d0
[   11.540676][   T66]  process_one_work+0xe55/0x16d0
[   11.540808][   T66]  ? __pfx___lock_release+0x10/0x10
[   11.540974][   T66]  ? __pfx_process_one_work+0x10/0x10
[   11.541167][   T66]  ? assign_work+0x16c/0x240
[   11.541321][   T66]  worker_thread+0x58c/0xce0
[   11.541474][   T66]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[   11.541693][   T66]  ? __pfx_worker_thread+0x10/0x10
[   11.541827][   T66]  ? __pfx_worker_thread+0x10/0x10
[   11.541968][   T66]  kthread+0x28a/0x350
[   11.542075][   T66]  ? __pfx_kthread+0x10/0x10
[   11.542245][   T66]  ret_from_fork+0x31/0x70
[   11.542387][   T66]  ? __pfx_kthread+0x10/0x10
[   11.542528][   T66]  ret_from_fork_asm+0x1a/0x30
[   11.542670][   T66]  </TASK>
[   11.542765][   T66] 
[   11.542829][   T66] Allocated by task 226:
[   11.542935][   T66]  kasan_save_stack+0x24/0x50
[   11.543105][   T66]  kasan_save_track+0x14/0x30
[   11.543245][   T66]  __kasan_slab_alloc+0x59/0x70
[   11.543380][   T66]  kmem_cache_alloc_noprof+0x10b/0x350
[   11.543526][   T66]  copy_net_ns+0xc6/0x340
[   11.543628][   T66]  create_new_namespaces+0x35f/0x920
[   11.543769][   T66]  unshare_nsproxy_namespaces+0x8d/0x130
[   11.543906][   T66]  ksys_unshare+0x2a9/0x660
[   11.544046][   T66]  __x64_sys_unshare+0x31/0x40
[   11.544180][   T66]  do_syscall_64+0xc1/0x1d0
[   11.544319][   T66]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   11.544492][   T66] 
[   11.544562][   T66] Freed by task 66:
[   11.544667][   T66]  kasan_save_stack+0x24/0x50
[   11.544810][   T66]  kasan_save_track+0x14/0x30
[   11.544946][   T66]  kasan_save_free_info+0x3b/0x60
[   11.545082][   T66]  __kasan_slab_free+0x38/0x50
[   11.545220][   T66]  kmem_cache_free+0xf8/0x330
[   11.545357][   T66]  cleanup_net+0x5a8/0xa40
[   11.545496][   T66]  process_one_work+0xe55/0x16d0
[   11.545630][   T66]  worker_thread+0x58c/0xce0
[   11.545768][   T66]  kthread+0x28a/0x350
[   11.545870][   T66]  ret_from_fork+0x31/0x70
[   11.546014][   T66]  ret_from_fork_asm+0x1a/0x30
[   11.546149][   T66] 
[   11.546237][   T66] The buggy address belongs to the object at ffff88800a100040
[   11.546237][   T66]  which belongs to the cache net_namespace of size 5696
[   11.546607][   T66] The buggy address is located 184 bytes inside of
[   11.546607][   T66]  freed 5696-byte region [ffff88800a100040, ffff88800a101680)
[   11.546938][   T66] 
[   11.547007][   T66] The buggy address belongs to the physical page:
[   11.547178][   T66] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800a102fc0 pfn:0xa100
[   11.547457][   T66] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   11.547699][   T66] flags: 0x80000000000240(workingset|head|node=0|zone=1)
[   11.547929][   T66] page_type: f5(slab)
[   11.548068][   T66] raw: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   11.548369][   T66] raw: ffff88800a102fc0 0000000000050002 00000001f5000000 0000000000000000
[   11.548627][   T66] head: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   11.548909][   T66] head: ffff88800a102fc0 0000000000050002 00000001f5000000 0000000000000000
[   11.549170][   T66] head: 0080000000000003 ffffea0000284001 ffffffffffffffff 0000000000000000
[   11.549448][   T66] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
[   11.549726][   T66] page dumped because: kasan: bad access detected
[   11.549920][   T66] 
[   11.550003][   T66] Memory state around the buggy address:
[   11.550161][   T66]  ffff88800a0fff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   11.550392][   T66]  ffff88800a100000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   11.550589][   T66] >ffff88800a100080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   11.550820][   T66]                                                                 ^
[   11.551043][   T66]  ffff88800a100100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   11.551266][   T66]  ffff88800a100180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   11.551486][   T66] ==================================================================
[   11.551770][   T66] Disabling lock debugging due to kernel taint