[   32.735967][   T11] ==================================================================
[   32.736206][   T11] BUG: KASAN: slab-use-after-free in cleanup_net+0xa5d/0xb90
[   32.736416][   T11] Read of size 8 at addr ffff88800cf200f8 by task kworker/u16:0/11
[   32.736617][   T11] 
[   32.736688][   T11] CPU: 1 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1
[   32.736893][   T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.737065][   T11] Workqueue: netns cleanup_net
[   32.737205][   T11] Call Trace:
[   32.737309][   T11]  <TASK>
[   32.737382][   T11]  dump_stack_lvl+0x82/0xd0
[   32.737523][   T11]  print_address_description.constprop.0+0x2c/0x3b0
[   32.737698][   T11]  ? cleanup_net+0xa5d/0xb90
[   32.737834][   T11]  print_report+0xb4/0x270
[   32.737969][   T11]  ? kasan_addr_to_slab+0x25/0x80
[   32.738103][   T11]  kasan_report+0xbd/0xf0
[   32.738210][   T11]  ? cleanup_net+0xa5d/0xb90
[   32.738347][   T11]  cleanup_net+0xa5d/0xb90
[   32.738484][   T11]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   32.738631][   T11]  ? __pfx_cleanup_net+0x10/0x10
[   32.738765][   T11]  ? trace_lock_acquire+0x148/0x1f0
[   32.738902][   T11]  ? lock_acquire+0x32/0xc0
[   32.739036][   T11]  ? process_one_work+0xe0b/0x16d0
[   32.739175][   T11]  process_one_work+0xe55/0x16d0
[   32.739315][   T11]  ? __pfx___lock_release+0x10/0x10
[   32.739451][   T11]  ? __pfx_process_one_work+0x10/0x10
[   32.739588][   T11]  ? assign_work+0x16c/0x240
[   32.739722][   T11]  worker_thread+0x58c/0xce0
[   32.739863][   T11]  ? __pfx_worker_thread+0x10/0x10
[   32.740001][   T11]  kthread+0x28a/0x350
[   32.740108][   T11]  ? __pfx_kthread+0x10/0x10
[   32.740245][   T11]  ret_from_fork+0x31/0x70
[   32.740381][   T11]  ? __pfx_kthread+0x10/0x10
[   32.740517][   T11]  ret_from_fork_asm+0x1a/0x30
[   32.740660][   T11]  </TASK>
[   32.740769][   T11] 
[   32.740857][   T11] Allocated by task 744:
[   32.740965][   T11]  kasan_save_stack+0x24/0x50
[   32.741102][   T11]  kasan_save_track+0x14/0x30
[   32.741238][   T11]  __kasan_slab_alloc+0x59/0x70
[   32.741374][   T11]  kmem_cache_alloc_noprof+0x10b/0x350
[   32.741512][   T11]  copy_net_ns+0xc6/0x540
[   32.741617][   T11]  create_new_namespaces+0x35f/0x920
[   32.741756][   T11]  unshare_nsproxy_namespaces+0x8a/0x1b0
[   32.741893][   T11]  ksys_unshare+0x2c4/0x6e0
[   32.742034][   T11]  __x64_sys_unshare+0x31/0x40
[   32.742170][   T11]  do_syscall_64+0xc1/0x1d0
[   32.742308][   T11]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   32.742482][   T11] 
[   32.742551][   T11] Freed by task 11:
[   32.742667][   T11]  kasan_save_stack+0x24/0x50
[   32.742802][   T11]  kasan_save_track+0x14/0x30
[   32.742948][   T11]  kasan_save_free_info+0x3b/0x60
[   32.743087][   T11]  __kasan_slab_free+0x38/0x50
[   32.743224][   T11]  kmem_cache_free+0xf8/0x330
[   32.743361][   T11]  cleanup_net+0x5a8/0xb90
[   32.743498][   T11]  process_one_work+0xe55/0x16d0
[   32.743635][   T11]  worker_thread+0x58c/0xce0
[   32.743770][   T11]  kthread+0x28a/0x350
[   32.743873][   T11]  ret_from_fork+0x31/0x70
[   32.744011][   T11]  ret_from_fork_asm+0x1a/0x30
[   32.744147][   T11] 
[   32.744217][   T11] The buggy address belongs to the object at ffff88800cf20040
[   32.744217][   T11]  which belongs to the cache net_namespace of size 6528
[   32.744589][   T11] The buggy address is located 184 bytes inside of
[   32.744589][   T11]  freed 6528-byte region [ffff88800cf20040, ffff88800cf219c0)
[   32.744917][   T11] 
[   32.744986][   T11] The buggy address belongs to the physical page:
[   32.745153][   T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800cf23640 pfn:0xcf20
[   32.745435][   T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   32.745640][   T11] flags: 0x80000000000240(workingset|head|node=0|zone=1)
[   32.745817][   T11] page_type: f5(slab)
[   32.745929][   T11] raw: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088
[   32.746172][   T11] raw: ffff88800cf23640 0000000000040002 00000001f5000000 0000000000000000
[   32.746416][   T11] head: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088
[   32.746667][   T11] head: ffff88800cf23640 0000000000040002 00000001f5000000 0000000000000000
[   32.746909][   T11] head: 0080000000000003 ffffea000033c801 ffffffffffffffff 0000000000000000
[   32.747146][   T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
[   32.747385][   T11] page dumped because: kasan: bad access detected
[   32.747554][   T11] 
[   32.747623][   T11] Memory state around the buggy address:
[   32.747755][   T11]  ffff88800cf1ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   32.747957][   T11]  ffff88800cf20000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   32.748157][   T11] >ffff88800cf20080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   32.748356][   T11]                                                                 ^
[   32.748562][   T11]  ffff88800cf20100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   32.748757][   T11]  ffff88800cf20180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   32.748952][   T11] ==================================================================
[   32.749197][   T11] Disabling lock debugging due to kernel taint