[   12.386336][  T284] eth0: renamed from r1h0
[   12.995603][  T292] eth1: renamed from r1h1
[   13.565485][  T299] eth2: renamed from r1h2
[   14.134726][  T306] eth3: renamed from r1h3
[   25.076586][   T65] ==================================================================
[   25.076822][   T65] BUG: KASAN: slab-use-after-free in cleanup_net+0xa5d/0xb90
[   25.077028][   T65] Read of size 8 at addr ffff8880096b00f8 by task kworker/u16:1/65
[   25.077234][   T65] 
[   25.077308][   T65] CPU: 2 UID: 0 PID: 65 Comm: kworker/u16:1 Not tainted 6.12.0-virtme #1
[   25.077515][   T65] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   25.077687][   T65] Workqueue: netns cleanup_net
[   25.077827][   T65] Call Trace:
[   25.077932][   T65]  <TASK>
[   25.078006][   T65]  dump_stack_lvl+0x82/0xd0
[   25.078143][   T65]  print_address_description.constprop.0+0x2c/0x3b0
[   25.078313][   T65]  ? cleanup_net+0xa5d/0xb90
[   25.078451][   T65]  print_report+0xb4/0x270
[   25.078585][   T65]  ? kasan_addr_to_slab+0x25/0x80
[   25.078720][   T65]  kasan_report+0xbd/0xf0
[   25.078823][   T65]  ? cleanup_net+0xa5d/0xb90
[   25.078958][   T65]  cleanup_net+0xa5d/0xb90
[   25.079090][   T65]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   25.079227][   T65]  ? __pfx_cleanup_net+0x10/0x10
[   25.079362][   T65]  ? trace_lock_acquire+0x148/0x1f0
[   25.079497][   T65]  ? lock_acquire+0x32/0xc0
[   25.079629][   T65]  ? process_one_work+0xe0b/0x16d0
[   25.079768][   T65]  process_one_work+0xe55/0x16d0
[   25.079907][   T65]  ? __pfx___lock_release+0x10/0x10
[   25.080043][   T65]  ? __pfx_process_one_work+0x10/0x10
[   25.080176][   T65]  ? assign_work+0x16c/0x240
[   25.080311][   T65]  worker_thread+0x58c/0xce0
[   25.080446][   T65]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[   25.080618][   T65]  ? __pfx_worker_thread+0x10/0x10
[   25.080751][   T65]  ? __pfx_worker_thread+0x10/0x10
[   25.080884][   T65]  kthread+0x28a/0x350
[   25.080990][   T65]  ? __pfx_kthread+0x10/0x10
[   25.081124][   T65]  ret_from_fork+0x31/0x70
[   25.081258][   T65]  ? __pfx_kthread+0x10/0x10
[   25.081393][   T65]  ret_from_fork_asm+0x1a/0x30
[   25.081533][   T65]  </TASK>
[   25.081635][   T65] 
[   25.081711][   T65] Allocated by task 256:
[   25.081812][   T65]  kasan_save_stack+0x24/0x50
[   25.081944][   T65]  kasan_save_track+0x14/0x30
[   25.082079][   T65]  __kasan_slab_alloc+0x59/0x70
[   25.082210][   T65]  kmem_cache_alloc_noprof+0x10b/0x350
[   25.082344][   T65]  copy_net_ns+0xc6/0x540
[   25.082445][   T65]  create_new_namespaces+0x35f/0x920
[   25.082580][   T65]  unshare_nsproxy_namespaces+0x8a/0x1b0
[   25.082712][   T65]  ksys_unshare+0x2c4/0x6e0
[   25.082846][   T65]  __x64_sys_unshare+0x31/0x40
[   25.082979][   T65]  do_syscall_64+0xc1/0x1d0
[   25.083119][   T65]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   25.083291][   T65] 
[   25.083358][   T65] Freed by task 65:
[   25.083457][   T65]  kasan_save_stack+0x24/0x50
[   25.083590][   T65]  kasan_save_track+0x14/0x30
[   25.083723][   T65]  kasan_save_free_info+0x3b/0x60
[   25.083857][   T65]  __kasan_slab_free+0x38/0x50
[   25.083984][   T65]  kmem_cache_free+0xf8/0x330
[   25.084118][   T65]  cleanup_net+0x5a8/0xb90
[   25.084253][   T65]  process_one_work+0xe55/0x16d0
[   25.084385][   T65]  worker_thread+0x58c/0xce0
[   25.084517][   T65]  kthread+0x28a/0x350
[   25.084619][   T65]  ret_from_fork+0x31/0x70
[   25.084755][   T65]  ret_from_fork_asm+0x1a/0x30
[   25.084888][   T65] 
[   25.084956][   T65] Last potentially related work creation:
[   25.085087][   T65]  kasan_save_stack+0x24/0x50
[   25.085224][   T65]  __kasan_record_aux_stack+0x8e/0xa0
[   25.085359][   T65]  insert_work+0x34/0x230
[   25.085462][   T65]  __queue_work+0x5fd/0xa40
[   25.085596][   T65]  queue_delayed_work_on+0x8c/0xa0
[   25.085731][   T65]  __inet_insert_ifa+0x751/0xb10
[   25.085877][   T65]  inet_rtm_newaddr+0x833/0xbd0
[   25.086013][   T65]  rtnetlink_rcv_msg+0x712/0xc10
[   25.086147][   T65]  netlink_rcv_skb+0x130/0x360
[   25.086286][   T65]  netlink_unicast+0x44b/0x710
[   25.086420][   T65]  netlink_sendmsg+0x723/0xbe0
[   25.086554][   T65]  ____sys_sendmsg+0x7ac/0xa10
[   25.086690][   T65]  ___sys_sendmsg+0xee/0x170
[   25.086823][   T65]  __sys_sendmsg+0x109/0x1a0
[   25.086960][   T65]  do_syscall_64+0xc1/0x1d0
[   25.087100][   T65]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   25.087268][   T65] 
[   25.087338][   T65] Second to last potentially related work creation:
[   25.087500][   T65]  kasan_save_stack+0x24/0x50
[   25.087649][   T65]  __kasan_record_aux_stack+0x8e/0xa0
[   25.087784][   T65]  insert_work+0x34/0x230
[   25.087886][   T65]  __queue_work+0x5fd/0xa40
[   25.088019][   T65]  queue_delayed_work_on+0x8c/0xa0
[   25.088153][   T65]  __inet_insert_ifa+0x751/0xb10
[   25.088287][   T65]  inetdev_event+0xb18/0xcf0
[   25.088422][   T65]  notifier_call_chain+0xcd/0x150
[   25.088563][   T65]  __dev_notify_flags+0xe6/0x250
[   25.088700][   T65]  dev_change_flags+0xec/0x160
[   25.088828][   T65]  do_setlink.constprop.0+0x79d/0x2300
[   25.088967][   T65]  rtnl_newlink+0x6de/0xa80
[   25.089108][   T65]  rtnetlink_rcv_msg+0x712/0xc10
[   25.089242][   T65]  netlink_rcv_skb+0x130/0x360
[   25.089384][   T65]  netlink_unicast+0x44b/0x710
[   25.089521][   T65]  netlink_sendmsg+0x723/0xbe0
[   25.089656][   T65]  ____sys_sendmsg+0x7ac/0xa10
[   25.089790][   T65]  ___sys_sendmsg+0xee/0x170
[   25.089927][   T65]  __sys_sendmsg+0x109/0x1a0
[   25.090060][   T65]  do_syscall_64+0xc1/0x1d0
[   25.090190][   T65]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   25.090360][   T65] 
[   25.090428][   T65] The buggy address belongs to the object at ffff8880096b0040
[   25.090428][   T65]  which belongs to the cache net_namespace of size 6528
[   25.090780][   T65] The buggy address is located 184 bytes inside of
[   25.090780][   T65]  freed 6528-byte region [ffff8880096b0040, ffff8880096b19c0)
[   25.091110][   T65] 
[   25.091180][   T65] The buggy address belongs to the physical page:
[   25.091404][   T65] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x96b0
[   25.091642][   T65] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   25.091855][   T65] flags: 0x80000000000040(head|node=0|zone=1)
[   25.092093][   T65] page_type: f5(slab)
[   25.092200][   T65] raw: 0080000000000040 ffff888001975240 ffff88800197a0a8 ffff88800197a0a8
[   25.092449][   T65] raw: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000
[   25.092752][   T65] head: 0080000000000040 ffff888001975240 ffff88800197a0a8 ffff88800197a0a8
[   25.092996][   T65] head: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000
[   25.093310][   T65] head: 0080000000000003 ffffea000025ac01 ffffffffffffffff 0000000000000000
[   25.093548][   T65] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
[   25.093849][   T65] page dumped because: kasan: bad access detected
[   25.094013][   T65] 
[   25.094087][   T65] Memory state around the buggy address:
[   25.094217][   T65]  ffff8880096aff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   25.094409][   T65]  ffff8880096b0000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   25.094610][   T65] >ffff8880096b0080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   25.094806][   T65]                                                                 ^
[   25.094999][   T65]  ffff8880096b0100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   25.095196][   T65]  ffff8880096b0180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   25.095451][   T65] ==================================================================
[   25.095703][   T65] Disabling lock debugging due to kernel taint