[ 20.842902][ T269] ip (269) used greatest stack depth: 24504 bytes left
[ 31.672335][ T318] ip (318) used greatest stack depth: 24160 bytes left
[ 32.184678][ T320] eth3: renamed from tmp
[ 34.201617][ T328] eth2: renamed from tmp
[ 36.787452][ T339] eth0: renamed from tmp
[ 37.662344][ T342] br0: port 1(eth0) entered blocking state
[ 37.662885][ T342] br0: port 1(eth0) entered disabled state
[ 37.663969][ T342] eth0: entered allmulticast mode
[ 37.666567][ T342] eth0: entered promiscuous mode
[ 37.668949][ T342] br0: port 1(eth0) entered blocking state
[ 37.669439][ T342] br0: port 1(eth0) entered forwarding state
[ 38.692002][ T346] eth1: renamed from tmp
[ 39.426372][ T349] br0: port 2(eth1) entered blocking state
[ 39.426892][ T349] br0: port 2(eth1) entered disabled state
[ 39.443025][ T349] eth1: entered allmulticast mode
[ 39.445428][ T349] eth1: entered promiscuous mode
[ 39.447047][ T349] br0: port 2(eth1) entered blocking state
[ 39.447473][ T349] br0: port 2(eth1) entered forwarding state
[ 44.567404][ T12] ==================================================================
[ 44.567865][ T12] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 44.568332][ T12] Read of size 1 at addr ffff888004b546c4 by task kworker/u16:0/12
[ 44.568770][ T12]
[ 44.568917][ T12] CPU: 1 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 44.568925][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 44.568930][ T12] Workqueue: netns cleanup_net
[ 44.568941][ T12] Call Trace:
[ 44.568944][ T12]
[ 44.568948][ T12] dump_stack_lvl+0x82/0xc0
[ 44.568956][ T12] print_address_description.constprop.0+0x2c/0x3a0
[ 44.568966][ T12] ? kobject_put+0xbb/0xd0
[ 44.568972][ T12] print_report+0xb4/0x270
[ 44.568978][ T12] ? kobject_put+0xbb/0xd0
[ 44.568983][ T12] ? kasan_addr_to_slab+0x21/0x70
[ 44.568989][ T12] ? kobject_put+0xbb/0xd0
[ 44.568994][ T12] kasan_report+0xca/0x100
[ 44.569001][ T12] ? kobject_put+0xbb/0xd0
[ 44.569011][ T12] kobject_put+0xbb/0xd0
[ 44.569016][ T12] netdev_run_todo+0x5f0/0xc60
[ 44.569025][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 44.569031][ T12] ? generic_xdp_install+0x410/0x410
[ 44.569036][ T12] ? net_generic+0xb1/0x1f0
[ 44.569050][ T12] ops_undo_list+0x714/0x890
[ 44.569060][ T12] ? rtnl_net_dumpid_one+0x270/0x270
[ 44.569065][ T12] ? cleanup_net+0x2d6/0x8b0
[ 44.569076][ T12] cleanup_net+0x3b2/0x8b0
[ 44.569083][ T12] ? net_passive_dec+0x190/0x190
[ 44.569091][ T12] ? rcu_is_watching+0x12/0xb0
[ 44.569101][ T12] process_one_work+0xe35/0x1650
[ 44.569114][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 44.569124][ T12] ? assign_work+0x168/0x240
[ 44.569132][ T12] worker_thread+0x591/0xcf0
[ 44.569144][ T12] ? rescuer_thread+0xd10/0xd10
[ 44.569150][ T12] kthread+0x37b/0x5f0
[ 44.569156][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 44.569161][ T12] ? ret_from_fork+0x1b/0x270
[ 44.569166][ T12] ? __lock_release+0x5d/0x170
[ 44.569173][ T12] ? rcu_is_watching+0x12/0xb0
[ 44.569178][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 44.569185][ T12] ret_from_fork+0x1db/0x270
[ 44.569189][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 44.569194][ T12] ret_from_fork_asm+0x11/0x20
[ 44.569210][ T12]
[ 44.569213][ T12]
[ 44.580028][ T12] Allocated by task 263:
[ 44.580267][ T12] kasan_save_stack+0x24/0x40
[ 44.580553][ T12] kasan_save_track+0x14/0x30
[ 44.580828][ T12] __kasan_kmalloc+0x7b/0x90
[ 44.581100][ T12] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 44.581380][ T12] alloc_netdev_mqs+0x7d/0x1370
[ 44.581670][ T12] ip6_tnl_init_net+0x102/0x3f0
[ 44.581943][ T12] ops_init+0x189/0x550
[ 44.582179][ T12] setup_net+0xf1/0x380
[ 44.582414][ T12] copy_net_ns+0x253/0x510
[ 44.582721][ T12] create_new_namespaces+0x35f/0x900
[ 44.583029][ T12] unshare_nsproxy_namespaces+0x8a/0x1a0
[ 44.583319][ T12] ksys_unshare+0x2be/0x6e0
[ 44.583600][ T12] __x64_sys_unshare+0x31/0x40
[ 44.583932][ T12] do_syscall_64+0xc1/0xfd0
[ 44.584215][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 44.584562][ T12]
[ 44.584732][ T12] Freed by task 12:
[ 44.584952][ T12] kasan_save_stack+0x24/0x40
[ 44.585267][ T12] kasan_save_track+0x14/0x30
[ 44.585550][ T12] __kasan_save_free_info+0x3b/0x60
[ 44.585845][ T12] __kasan_slab_free+0x3f/0x60
[ 44.586119][ T12] kfree+0x21d/0x540
[ 44.586348][ T12] device_release+0x9c/0x210
[ 44.586624][ T12] kobject_cleanup+0xfe/0x360
[ 44.586906][ T12] netdev_run_todo+0x81f/0xc60
[ 44.587164][ T12] ops_undo_list+0x714/0x890
[ 44.587434][ T12] cleanup_net+0x3b2/0x8b0
[ 44.587699][ T12] process_one_work+0xe35/0x1650
[ 44.587978][ T12] worker_thread+0x591/0xcf0
[ 44.588250][ T12] kthread+0x37b/0x5f0
[ 44.588484][ T12] ret_from_fork+0x1db/0x270
[ 44.588780][ T12] ret_from_fork_asm+0x11/0x20
[ 44.589078][ T12]
[ 44.589219][ T12] The buggy address belongs to the object at ffff888004b54000
[ 44.589219][ T12] which belongs to the cache kmalloc-4k of size 4096
[ 44.589867][ T12] The buggy address is located 1732 bytes inside of
[ 44.589867][ T12] freed 4096-byte region [ffff888004b54000, ffff888004b55000)
[ 44.590549][ T12]
[ 44.590716][ T12] The buggy address belongs to the physical page:
[ 44.591065][ T12] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x4b50
[ 44.591574][ T12] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 44.591996][ T12] flags: 0x80000000000040(head|node=0|zone=1)
[ 44.592339][ T12] page_type: f5(slab)
[ 44.592560][ T12] raw: 0080000000000040 ffff888001043700 ffffea0000173e10 ffffea000022ce10
[ 44.593059][ T12] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 44.593554][ T12] head: 0080000000000040 ffff888001043700 ffffea0000173e10 ffffea000022ce10
[ 44.594106][ T12] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 44.594579][ T12] head: 0080000000000003 ffffea000012d401 00000000ffffffff 00000000ffffffff
[ 44.595056][ T12] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 44.595542][ T12] page dumped because: kasan: bad access detected
[ 44.595886][ T12]
[ 44.596013][ T12] Memory state around the buggy address:
[ 44.596287][ T12] ffff888004b54580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 44.596717][ T12] ffff888004b54600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 44.597114][ T12] >ffff888004b54680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 44.597494][ T12] ^
[ 44.597855][ T12] ffff888004b54700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 44.598254][ T12] ffff888004b54780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 44.598643][ T12] ==================================================================
[ 44.599116][ T12] Disabling lock debugging due to kernel taint
[ 44.599405][ T12] ------------[ cut here ]------------
[ 44.599587][ T12] refcount_t: underflow; use-after-free.
[ 44.599811][ T12] WARNING: CPU: 3 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 44.600247][ T12] Modules linked in:
[ 44.600447][ T12] CPU: 3 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 44.600915][ T12] Tainted: [B]=BAD_PAGE
[ 44.601065][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 44.601311][ T12] Workqueue: netns cleanup_net
[ 44.601519][ T12] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 44.601756][ T12] Code: cc 38 03 80 fb 01 0f 87 29 33 d7 fe 83 e3 01 0f 85 51 ff ff ff c6 05 17 cc 38 03 01 90 48 c7 c7 40 ba e5 ab e8 62 d6 16 ff 90 <0f> 0b 90 90 e9 33 ff ff ff 48 89 df e8 c0 9d a0 ff e9 ba fe ff ff
[ 44.602418][ T12] RSP: 0018:ffffc900000c7a08 EFLAGS: 00010282
[ 44.602657][ T12] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 44.602942][ T12] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 44.603219][ T12] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff59c0934
[ 44.603505][ T12] R10: 0000000000000003 R11: ffffc900000c7580 R12: 0000000000000001
[ 44.603783][ T12] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 44.604070][ T12] FS: 0000000000000000(0000) GS:ffff8880bee88000(0000) knlGS:0000000000000000
[ 44.604397][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 44.604634][ T12] CR2: 000055f1e54110f0 CR3: 000000001033e006 CR4: 0000000000772ef0
[ 44.604937][ T12] PKRU: 55555554
[ 44.605081][ T12] Call Trace:
[ 44.605224][ T12]
[ 44.605318][ T12] netdev_run_todo+0x5f0/0xc60
[ 44.605527][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 44.605767][ T12] ? generic_xdp_install+0x410/0x410
[ 44.605969][ T12] ? net_generic+0xb1/0x1f0
[ 44.606168][ T12] ops_undo_list+0x714/0x890
[ 44.606344][ T12] ? rtnl_net_dumpid_one+0x270/0x270
[ 44.606543][ T12] ? cleanup_net+0x2d6/0x8b0
[ 44.606756][ T12] cleanup_net+0x3b2/0x8b0
[ 44.606951][ T12] ? net_passive_dec+0x190/0x190
[ 44.607135][ T12] ? rcu_is_watching+0x12/0xb0
[ 44.607298][ T12] process_one_work+0xe35/0x1650
[ 44.607590][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 44.607822][ T12] ? assign_work+0x168/0x240
[ 44.608015][ T12] worker_thread+0x591/0xcf0
[ 44.608208][ T12] ? rescuer_thread+0xd10/0xd10
[ 44.608391][ T12] kthread+0x37b/0x5f0
[ 44.608544][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 44.608758][ T12] ? ret_from_fork+0x1b/0x270
[ 44.608955][ T12] ? __lock_release+0x5d/0x170
[ 44.609146][ T12] ? rcu_is_watching+0x12/0xb0
[ 44.609326][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 44.609520][ T12] ret_from_fork+0x1db/0x270
[ 44.609700][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 44.609911][ T12] ret_from_fork_asm+0x11/0x20
[ 44.610108][ T12]
[ 44.610240][ T12] irq event stamp: 17861
[ 44.610392][ T12] hardirqs last enabled at (17861): [] finish_task_switch.isra.0+0x245/0x960
[ 44.610784][ T12] hardirqs last disabled at (17860): [] __schedule+0x94a/0x1b10
[ 44.611117][ T12] softirqs last enabled at (17784): [] handle_softirqs+0x352/0x610
[ 44.611423][ T12] softirqs last disabled at (17731): [] irq_exit_rcu+0xab/0x100
[ 44.611743][ T12] ---[ end trace 0000000000000000 ]---
[ 44.630015][ T12] br0: port 1(eth0) entered disabled state
[ 44.638573][ T12] eth0 (unregistering): left allmulticast mode
[ 44.638972][ T12] eth0 (unregistering): left promiscuous mode
[ 44.639930][ T12] br0: port 1(eth0) entered disabled state
[ 45.403634][ T12] eth1: left allmulticast mode
[ 45.403882][ T12] eth1: left promiscuous mode
[ 45.404245][ T12] br0: port 2(eth1) entered disabled state
[ 54.432884][ T453] eth3: renamed from tmp
[ 55.611759][ T461] eth2: renamed from tmp
[ 57.038583][ T471] eth0: renamed from tmp
[ 57.498640][ T475] br100: port 1(eth0) entered blocking state
[ 57.498943][ T475] br100: port 1(eth0) entered disabled state
[ 57.499231][ T475] eth0: entered allmulticast mode
[ 57.500487][ T475] eth0: entered promiscuous mode
[ 57.501422][ T475] br100: port 1(eth0) entered blocking state
[ 57.501661][ T475] br100: port 1(eth0) entered forwarding state
[ 57.990388][ T478] eth1: renamed from tmp
[ 58.556420][ T482] br100: port 2(eth1) entered blocking state
[ 58.556719][ T482] br100: port 2(eth1) entered disabled state
[ 58.557026][ T482] eth1: entered allmulticast mode
[ 58.558301][ T482] eth1: entered promiscuous mode
[ 58.559100][ T482] br100: port 2(eth1) entered blocking state
[ 58.559349][ T482] br100: port 2(eth1) entered forwarding state
[ 63.221335][ T12] br100: port 1(eth0) entered disabled state
[ 63.225547][ T12] eth0 (unregistering): left allmulticast mode
[ 63.225868][ T12] eth0 (unregistering): left promiscuous mode
[ 63.227701][ T12] br100: port 1(eth0) entered disabled state
[ 63.869176][ T12] eth1: left allmulticast mode
[ 63.869490][ T12] eth1: left promiscuous mode
[ 63.869912][ T12] br100: port 2(eth1) entered disabled state
[ 70.481657][ T571] eth1: renamed from tmp
[ 71.393998][ T577] eth2: renamed from tmp
[ 79.370128][ T631] eth1tag: renamed from eth1 (while UP)
[ 79.691242][ T636] eth1: renamed from eth1tag (while UP)
[ 82.455271][ T678] eth1tag: renamed from eth1 (while UP)
[ 82.766600][ T683] eth1: renamed from eth1tag (while UP)
[ 85.421290][ T725] eth1tag: renamed from eth1 (while UP)
[ 85.718505][ T730] eth1: renamed from eth1tag (while UP)
[ 88.478377][ T772] eth1tag: renamed from eth1 (while UP)
[ 88.823375][ T777] eth1: renamed from eth1tag (while UP)
[ 96.857145][ T860] eth1: renamed from tmp
[ 98.355764][ T870] eth2: renamed from tmp
[ 110.438653][ T956] eth1: renamed from tmp
[ 111.836563][ T967] eth2: renamed from tmp
[ 124.488589][ T1059] eth1: renamed from tmp
[ 125.444748][ T1065] eth2: renamed from tmp
[ 133.479340][ T1121] eth1tag: renamed from eth1 (while UP)
[ 133.815807][ T1126] eth1: renamed from eth1tag (while UP)
[ 136.419136][ T1170] eth1tag: renamed from eth1 (while UP)
[ 136.788589][ T1175] eth1: renamed from eth1tag (while UP)
[ 139.478516][ T1219] eth1tag: renamed from eth1 (while UP)
[ 139.919018][ T1224] eth1: renamed from eth1tag (while UP)
[ 142.654232][ T1268] eth1tag: renamed from eth1 (while UP)
[ 142.974057][ T1273] eth1: renamed from eth1tag (while UP)