[   10.446625][   T11] ==================================================================
[   10.446995][   T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40
[   10.447238][   T11] Read of size 8 at addr ffff88800b6d00f8 by task kworker/u16:0/11
[   10.447447][   T11] 
[   10.447519][   T11] CPU: 2 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1
[   10.447735][   T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.447913][   T11] Workqueue: netns cleanup_net
[   10.448058][   T11] Call Trace:
[   10.448164][   T11]  <TASK>
[   10.448236][   T11]  dump_stack_lvl+0x82/0xd0
[   10.448379][   T11]  print_address_description.constprop.0+0x2c/0x3b0
[   10.448567][   T11]  ? cleanup_net+0x932/0xa40
[   10.448708][   T11]  print_report+0xb4/0x270
[   10.448844][   T11]  ? kasan_addr_to_slab+0x25/0x80
[   10.448986][   T11]  kasan_report+0xbd/0xf0
[   10.449093][   T11]  ? cleanup_net+0x932/0xa40
[   10.449236][   T11]  cleanup_net+0x932/0xa40
[   10.449377][   T11]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   10.449529][   T11]  ? __pfx_cleanup_net+0x10/0x10
[   10.449666][   T11]  ? trace_lock_acquire+0x148/0x1f0
[   10.449806][   T11]  ? lock_acquire+0x32/0xc0
[   10.449946][   T11]  ? process_one_work+0xe0b/0x16d0
[   10.450088][   T11]  process_one_work+0xe55/0x16d0
[   10.450228][   T11]  ? __pfx___lock_release+0x10/0x10
[   10.450373][   T11]  ? __pfx_process_one_work+0x10/0x10
[   10.450519][   T11]  ? assign_work+0x16c/0x240
[   10.450655][   T11]  worker_thread+0x58c/0xce0
[   10.450796][   T11]  ? __pfx_worker_thread+0x10/0x10
[   10.450936][   T11]  kthread+0x28a/0x350
[   10.451042][   T11]  ? __pfx_kthread+0x10/0x10
[   10.451182][   T11]  ret_from_fork+0x31/0x70
[   10.451320][   T11]  ? __pfx_kthread+0x10/0x10
[   10.451494][   T11]  ret_from_fork_asm+0x1a/0x30
[   10.451692][   T11]  </TASK>
[   10.451858][   T11] 
[   10.451964][   T11] Allocated by task 227:
[   10.452116][   T11]  kasan_save_stack+0x24/0x50
[   10.452326][   T11]  kasan_save_track+0x14/0x30
[   10.452529][   T11]  __kasan_slab_alloc+0x59/0x70
[   10.452702][   T11]  kmem_cache_alloc_noprof+0x10b/0x350
[   10.452860][   T11]  copy_net_ns+0xc6/0x340
[   10.453012][   T11]  create_new_namespaces+0x35f/0x920
[   10.453159][   T11]  unshare_nsproxy_namespaces+0x8d/0x130
[   10.453294][   T11]  ksys_unshare+0x2a9/0x660
[   10.453437][   T11]  __x64_sys_unshare+0x31/0x40
[   10.453576][   T11]  do_syscall_64+0xc1/0x1d0
[   10.453712][   T11]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   10.453926][   T11] 
[   10.454023][   T11] Freed by task 11:
[   10.454179][   T11]  kasan_save_stack+0x24/0x50
[   10.454352][   T11]  kasan_save_track+0x14/0x30
[   10.454492][   T11]  kasan_save_free_info+0x3b/0x60
[   10.454633][   T11]  __kasan_slab_free+0x38/0x50
[   10.454769][   T11]  kmem_cache_free+0xf8/0x330
[   10.454908][   T11]  cleanup_net+0x5a8/0xa40
[   10.455054][   T11]  process_one_work+0xe55/0x16d0
[   10.455228][   T11]  worker_thread+0x58c/0xce0
[   10.455368][   T11]  kthread+0x28a/0x350
[   10.455486][   T11]  ret_from_fork+0x31/0x70
[   10.455649][   T11]  ret_from_fork_asm+0x1a/0x30
[   10.455834][   T11] 
[   10.455928][   T11] The buggy address belongs to the object at ffff88800b6d0040
[   10.455928][   T11]  which belongs to the cache net_namespace of size 5696
[   10.456380][   T11] The buggy address is located 184 bytes inside of
[   10.456380][   T11]  freed 5696-byte region [ffff88800b6d0040, ffff88800b6d1680)
[   10.456704][   T11] 
[   10.456774][   T11] The buggy address belongs to the physical page:
[   10.456981][   T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800b6d2fc0 pfn:0xb6d0
[   10.457275][   T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   10.457479][   T11] flags: 0x80000000000240(workingset|head|node=0|zone=1)
[   10.457659][   T11] page_type: f5(slab)
[   10.457766][   T11] raw: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   10.458110][   T11] raw: ffff88800b6d2fc0 0000000000050002 00000001f5000000 0000000000000000
[   10.458351][   T11] head: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   10.458643][   T11] head: ffff88800b6d2fc0 0000000000050002 00000001f5000000 0000000000000000
[   10.458946][   T11] head: 0080000000000003 ffffea00002db401 ffffffffffffffff 0000000000000000
[   10.459256][   T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
[   10.459496][   T11] page dumped because: kasan: bad access detected
[   10.459710][   T11] 
[   10.459786][   T11] Memory state around the buggy address:
[   10.459922][   T11]  ffff88800b6cff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   10.460138][   T11]  ffff88800b6d0000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   10.460333][   T11] >ffff88800b6d0080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.460575][   T11]                                                                 ^
[   10.460810][   T11]  ffff88800b6d0100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.461032][   T11]  ffff88800b6d0180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.461317][   T11] ==================================================================
[   10.461667][   T11] Disabling lock debugging due to kernel taint