[   11.342488][   T65] ==================================================================
[   11.342740][   T65] BUG: KASAN: slab-use-after-free in cleanup_net+0xa5d/0xb90
[   11.342958][   T65] Read of size 8 at addr ffff888005a480f8 by task kworker/u16:1/65
[   11.343165][   T65] 
[   11.343240][   T65] CPU: 0 UID: 0 PID: 65 Comm: kworker/u16:1 Not tainted 6.12.0-virtme #1
[   11.343449][   T65] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.343630][   T65] Workqueue: netns cleanup_net
[   11.343784][   T65] Call Trace:
[   11.343891][   T65]  <TASK>
[   11.343965][   T65]  dump_stack_lvl+0x82/0xd0
[   11.344115][   T65]  print_address_description.constprop.0+0x2c/0x3b0
[   11.344307][   T65]  ? cleanup_net+0xa5d/0xb90
[   11.344456][   T65]  print_report+0xb4/0x270
[   11.344594][   T65]  ? kasan_addr_to_slab+0x25/0x80
[   11.344736][   T65]  kasan_report+0xbd/0xf0
[   11.344844][   T65]  ? cleanup_net+0xa5d/0xb90
[   11.344988][   T65]  cleanup_net+0xa5d/0xb90
[   11.345128][   T65]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   11.345271][   T65]  ? __pfx_cleanup_net+0x10/0x10
[   11.345408][   T65]  ? trace_lock_acquire+0x148/0x1f0
[   11.345546][   T65]  ? lock_acquire+0x32/0xc0
[   11.345690][   T65]  ? process_one_work+0xe0b/0x16d0
[   11.345834][   T65]  process_one_work+0xe55/0x16d0
[   11.345976][   T65]  ? __pfx___lock_release+0x10/0x10
[   11.346113][   T65]  ? __pfx_process_one_work+0x10/0x10
[   11.346255][   T65]  ? assign_work+0x16c/0x240
[   11.346396][   T65]  worker_thread+0x58c/0xce0
[   11.346540][   T65]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[   11.346719][   T65]  ? __pfx_worker_thread+0x10/0x10
[   11.346859][   T65]  ? __pfx_worker_thread+0x10/0x10
[   11.346998][   T65]  kthread+0x28a/0x350
[   11.347109][   T65]  ? __pfx_kthread+0x10/0x10
[   11.347247][   T65]  ret_from_fork+0x31/0x70
[   11.347387][   T65]  ? __pfx_kthread+0x10/0x10
[   11.347529][   T65]  ret_from_fork_asm+0x1a/0x30
[   11.347681][   T65]  </TASK>
[   11.347787][   T65] 
[   11.347862][   T65] Allocated by task 260:
[   11.347972][   T65]  kasan_save_stack+0x24/0x50
[   11.348113][   T65]  kasan_save_track+0x14/0x30
[   11.348258][   T65]  __kasan_slab_alloc+0x59/0x70
[   11.348401][   T65]  kmem_cache_alloc_noprof+0x10b/0x350
[   11.348542][   T65]  copy_net_ns+0xc6/0x540
[   11.348653][   T65]  create_new_namespaces+0x35f/0x920
[   11.348804][   T65]  unshare_nsproxy_namespaces+0x8a/0x1b0
[   11.348951][   T65]  ksys_unshare+0x2c4/0x6e0
[   11.349093][   T65]  __x64_sys_unshare+0x31/0x40
[   11.349231][   T65]  do_syscall_64+0xc1/0x1d0
[   11.349380][   T65]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   11.349560][   T65] 
[   11.349630][   T65] Freed by task 65:
[   11.349732][   T65]  kasan_save_stack+0x24/0x50
[   11.349869][   T65]  kasan_save_track+0x14/0x30
[   11.350011][   T65]  kasan_save_free_info+0x3b/0x60
[   11.350153][   T65]  __kasan_slab_free+0x38/0x50
[   11.350293][   T65]  kmem_cache_free+0xf8/0x330
[   11.350429][   T65]  cleanup_net+0x5a8/0xb90
[   11.350567][   T65]  process_one_work+0xe55/0x16d0
[   11.350709][   T65]  worker_thread+0x58c/0xce0
[   11.350849][   T65]  kthread+0x28a/0x350
[   11.350954][   T65]  ret_from_fork+0x31/0x70
[   11.351093][   T65]  ret_from_fork_asm+0x1a/0x30
[   11.351236][   T65] 
[   11.351309][   T65] The buggy address belongs to the object at ffff888005a48040
[   11.351309][   T65]  which belongs to the cache net_namespace of size 6528
[   11.351678][   T65] The buggy address is located 184 bytes inside of
[   11.351678][   T65]  freed 6528-byte region [ffff888005a48040, ffff888005a499c0)
[   11.352024][   T65] 
[   11.352097][   T65] The buggy address belongs to the physical page:
[   11.352266][   T65] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888005a4b640 pfn:0x5a48
[   11.352555][   T65] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   11.352769][   T65] flags: 0x80000000000240(workingset|head|node=0|zone=1)
[   11.352951][   T65] page_type: f5(slab)
[   11.353062][   T65] raw: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088
[   11.353311][   T65] raw: ffff888005a4b640 0000000000040002 00000001f5000000 0000000000000000
[   11.353552][   T65] head: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088
[   11.353797][   T65] head: ffff888005a4b640 0000000000040002 00000001f5000000 0000000000000000
[   11.354038][   T65] head: 0080000000000003 ffffea0000169201 ffffffffffffffff 0000000000000000
[   11.354281][   T65] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
[   11.354518][   T65] page dumped because: kasan: bad access detected
[   11.354690][   T65] 
[   11.354761][   T65] Memory state around the buggy address:
[   11.354896][   T65]  ffff888005a47f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   11.355096][   T65]  ffff888005a48000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   11.355296][   T65] >ffff888005a48080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   11.355501][   T65]                                                                 ^
[   11.355696][   T65]  ffff888005a48100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   11.355888][   T65]  ffff888005a48180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   11.356090][   T65] ==================================================================
[   11.356316][   T65] Disabling lock debugging due to kernel taint