[   10.396241][   T11] ==================================================================
[   10.396532][   T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40
[   10.396803][   T11] Read of size 8 at addr ffff888004da00f8 by task kworker/u16:0/11
[   10.397042][   T11] 
[   10.397123][   T11] CPU: 1 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1
[   10.397378][   T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.397590][   T11] Workqueue: netns cleanup_net
[   10.397761][   T11] Call Trace:
[   10.397894][   T11]  <TASK>
[   10.397991][   T11]  dump_stack_lvl+0x82/0xd0
[   10.398167][   T11]  print_address_description.constprop.0+0x2c/0x3b0
[   10.398378][   T11]  ? cleanup_net+0x932/0xa40
[   10.398552][   T11]  print_report+0xb4/0x270
[   10.398712][   T11]  ? kasan_addr_to_slab+0x25/0x80
[   10.398880][   T11]  kasan_report+0xbd/0xf0
[   10.399016][   T11]  ? cleanup_net+0x932/0xa40
[   10.399186][   T11]  cleanup_net+0x932/0xa40
[   10.399354][   T11]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   10.399524][   T11]  ? __pfx_cleanup_net+0x10/0x10
[   10.399690][   T11]  ? trace_lock_acquire+0x148/0x1f0
[   10.399858][   T11]  ? lock_acquire+0x32/0xc0
[   10.400022][   T11]  ? process_one_work+0xe0b/0x16d0
[   10.400196][   T11]  process_one_work+0xe55/0x16d0
[   10.400359][   T11]  ? __pfx___lock_release+0x10/0x10
[   10.400506][   T11]  ? __pfx_process_one_work+0x10/0x10
[   10.400658][   T11]  ? assign_work+0x16c/0x240
[   10.400807][   T11]  worker_thread+0x58c/0xce0
[   10.400955][   T11]  ? __pfx_worker_thread+0x10/0x10
[   10.401097][   T11]  kthread+0x28a/0x350
[   10.401209][   T11]  ? __pfx_kthread+0x10/0x10
[   10.401369][   T11]  ret_from_fork+0x31/0x70
[   10.401507][   T11]  ? __pfx_kthread+0x10/0x10
[   10.401643][   T11]  ret_from_fork_asm+0x1a/0x30
[   10.401788][   T11]  </TASK>
[   10.401892][   T11] 
[   10.401972][   T11] Allocated by task 227:
[   10.402079][   T11]  kasan_save_stack+0x24/0x50
[   10.402232][   T11]  kasan_save_track+0x14/0x30
[   10.402368][   T11]  __kasan_slab_alloc+0x59/0x70
[   10.402517][   T11]  kmem_cache_alloc_noprof+0x10b/0x350
[   10.402671][   T11]  copy_net_ns+0xc6/0x340
[   10.402784][   T11]  create_new_namespaces+0x35f/0x920
[   10.402935][   T11]  unshare_nsproxy_namespaces+0x8d/0x130
[   10.403091][   T11]  ksys_unshare+0x2a9/0x660
[   10.403254][   T11]  __x64_sys_unshare+0x31/0x40
[   10.403412][   T11]  do_syscall_64+0xc1/0x1d0
[   10.403572][   T11]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   10.403779][   T11] 
[   10.403866][   T11] Freed by task 11:
[   10.403993][   T11]  kasan_save_stack+0x24/0x50
[   10.404187][   T11]  kasan_save_track+0x14/0x30
[   10.404361][   T11]  kasan_save_free_info+0x3b/0x60
[   10.404524][   T11]  __kasan_slab_free+0x38/0x50
[   10.404686][   T11]  kmem_cache_free+0xf8/0x330
[   10.404857][   T11]  cleanup_net+0x5a8/0xa40
[   10.405030][   T11]  process_one_work+0xe55/0x16d0
[   10.405188][   T11]  worker_thread+0x58c/0xce0
[   10.405342][   T11]  kthread+0x28a/0x350
[   10.405453][   T11]  ret_from_fork+0x31/0x70
[   10.405604][   T11]  ret_from_fork_asm+0x1a/0x30
[   10.405764][   T11] 
[   10.405843][   T11] The buggy address belongs to the object at ffff888004da0040
[   10.405843][   T11]  which belongs to the cache net_namespace of size 5696
[   10.406278][   T11] The buggy address is located 184 bytes inside of
[   10.406278][   T11]  freed 5696-byte region [ffff888004da0040, ffff888004da1680)
[   10.406666][   T11] 
[   10.406754][   T11] The buggy address belongs to the physical page:
[   10.406954][   T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888004da2fc0 pfn:0x4da0
[   10.407295][   T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   10.407522][   T11] flags: 0x80000000000240(workingset|head|node=0|zone=1)
[   10.407711][   T11] page_type: f5(slab)
[   10.407837][   T11] raw: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   10.408125][   T11] raw: ffff888004da2fc0 0000000000050002 00000001f5000000 0000000000000000
[   10.408413][   T11] head: 0080000000000240 ffff88800195f240 ffff888001962088 ffff888001962088
[   10.408690][   T11] head: ffff888004da2fc0 0000000000050002 00000001f5000000 0000000000000000
[   10.408973][   T11] head: 0080000000000003 ffffea0000136801 ffffffffffffffff 0000000000000000
[   10.409244][   T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
[   10.409514][   T11] page dumped because: kasan: bad access detected
[   10.409693][   T11] 
[   10.409768][   T11] Memory state around the buggy address:
[   10.409923][   T11]  ffff888004d9ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   10.410150][   T11]  ffff888004da0000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   10.410377][   T11] >ffff888004da0080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.410595][   T11]                                                                 ^
[   10.410820][   T11]  ffff888004da0100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.411042][   T11]  ffff888004da0180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   10.411280][   T11] ==================================================================
[   10.411578][   T11] Disabling lock debugging due to kernel taint