[ 40.614218][ T586] br1: port 1(vx100) entered blocking state [ 40.614508][ T586] br1: port 1(vx100) entered disabled state [ 40.614794][ T586] vx100: entered allmulticast mode [ 40.617375][ T586] vx100: entered promiscuous mode [ 40.618253][ T586] br1: port 1(vx100) entered blocking state [ 40.618575][ T586] br1: port 1(vx100) entered forwarding state [ 40.834673][ T588] br1: port 2(veth1) entered blocking state [ 40.835048][ T588] br1: port 2(veth1) entered disabled state [ 40.835391][ T588] veth1: entered allmulticast mode [ 40.837476][ T588] veth1: entered promiscuous mode [ 40.937736][ T45] br1: port 2(veth1) entered blocking state [ 40.938101][ T45] br1: port 2(veth1) entered forwarding state [ 41.352531][ T594] br2: port 1(vx200) entered blocking state [ 41.352975][ T594] br2: port 1(vx200) entered disabled state [ 41.353834][ T594] vx200: entered allmulticast mode [ 41.357354][ T594] vx200: entered promiscuous mode [ 41.359667][ T594] br2: port 1(vx200) entered blocking state [ 41.360067][ T594] br2: port 1(vx200) entered forwarding state [ 41.680615][ T597] br2: port 2(veth2.20) entered blocking state [ 41.680909][ T597] br2: port 2(veth2.20) entered disabled state [ 41.681632][ T597] veth2.20: entered allmulticast mode [ 41.683683][ T597] veth2.20: entered promiscuous mode [ 41.759313][ T599] veth2: entered allmulticast mode [ 41.759585][ T599] veth2: entered promiscuous mode [ 41.760834][ T599] br2: port 2(veth2.20) entered blocking state [ 41.761148][ T599] br2: port 2(veth2.20) entered forwarding state [ 42.067985][ T602] ip (602) used greatest stack depth: 23776 bytes left [ 45.068304][ T644] br3: port 1(w1) entered blocking state [ 45.068729][ T644] br3: port 1(w1) entered disabled state [ 45.069121][ T644] w1: entered allmulticast mode [ 45.072408][ T644] w1: entered promiscuous mode [ 45.660891][ T650] br3: port 2(vx100) entered blocking state [ 45.661235][ T650] br3: port 2(vx100) entered disabled state [ 45.661573][ T650] vx100: entered allmulticast mode [ 45.664104][ T650] vx100: entered promiscuous mode [ 45.665506][ T650] br3: port 2(vx100) entered blocking state [ 45.665899][ T650] br3: port 2(vx100) entered forwarding state [ 46.349099][ T37] br3: port 1(w1) entered blocking state [ 46.349401][ T37] br3: port 1(w1) entered forwarding state [ 49.123827][ T698] br3: port 1(w1) entered blocking state [ 49.124101][ T698] br3: port 1(w1) entered disabled state [ 49.124376][ T698] w1: entered allmulticast mode [ 49.126667][ T698] w1: entered promiscuous mode [ 49.655324][ T704] br3: port 2(vx200) entered blocking state [ 49.655718][ T704] br3: port 2(vx200) entered disabled state [ 49.656017][ T704] vx200: entered allmulticast mode [ 49.658511][ T704] vx200: entered promiscuous mode [ 49.659389][ T704] br3: port 2(vx200) entered blocking state [ 49.659662][ T704] br3: port 2(vx200) entered forwarding state [ 50.362313][ T150] br3: port 1(w1) entered blocking state [ 50.362612][ T150] br3: port 1(w1) entered forwarding state [ 52.160337][ T743] br3: port 3(w1.20) entered blocking state [ 52.160705][ T743] br3: port 3(w1.20) entered disabled state [ 52.161019][ T743] w1.20: entered allmulticast mode [ 52.163000][ T743] w1.20: entered promiscuous mode [ 52.778521][ T756] br3: port 3(w1.20) entered blocking state [ 52.778888][ T756] br3: port 3(w1.20) entered forwarding state [ 62.876329][ T11] w1.20: left allmulticast mode [ 62.876927][ T11] w1.20: left promiscuous mode [ 62.877793][ T11] br3: port 3(w1.20) entered disabled state [ 62.881841][ T11] vx200: left allmulticast mode [ 62.882229][ T11] vx200: left promiscuous mode [ 62.882743][ T11] br3: port 2(vx200) entered disabled state [ 62.885781][ T11] w1: left allmulticast mode [ 62.886265][ T11] w1: left promiscuous mode [ 62.886761][ T11] br3: port 1(w1) entered disabled state [ 63.274478][ T11] vx100: left allmulticast mode [ 63.274752][ T11] vx100: left promiscuous mode [ 63.275206][ T11] br3: port 2(vx100) entered disabled state [ 63.280498][ T11] w1: left allmulticast mode [ 63.280768][ T11] w1: left promiscuous mode [ 63.281401][ T11] br3: port 1(w1) entered disabled state [ 63.542096][ T11] ================================================================== [ 63.542607][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 63.543028][ T11] Read of size 8 at addr ffff88800bc59a38 by task kworker/u16:0/11 [ 63.543514][ T11] [ 63.543668][ T11] CPU: 1 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 63.544132][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 63.544498][ T11] Workqueue: netns cleanup_net [ 63.544819][ T11] Call Trace: [ 63.545000][ T11] [ 63.545127][ T11] dump_stack_lvl+0x82/0xd0 [ 63.545402][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 63.545761][ T11] ? cleanup_net+0x932/0xa40 [ 63.546086][ T11] print_report+0xb4/0x270 [ 63.546440][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 63.546773][ T11] kasan_report+0xbd/0xf0 [ 63.547050][ T11] ? cleanup_net+0x932/0xa40 [ 63.547329][ T11] cleanup_net+0x932/0xa40 [ 63.547650][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 63.547942][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 63.548255][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 63.548560][ T11] ? lock_acquire+0x32/0xc0 [ 63.548864][ T11] ? process_one_work+0xe0b/0x16d0 [ 63.549160][ T11] process_one_work+0xe55/0x16d0 [ 63.549447][ T11] ? __pfx___lock_release+0x10/0x10 [ 63.549720][ T11] ? __pfx_process_one_work+0x10/0x10 [ 63.550026][ T11] ? assign_work+0x16c/0x240 [ 63.550318][ T11] worker_thread+0x58c/0xce0 [ 63.550628][ T11] ? __pfx_worker_thread+0x10/0x10 [ 63.550920][ T11] kthread+0x28a/0x350 [ 63.551149][ T11] ? __pfx_kthread+0x10/0x10 [ 63.551445][ T11] ret_from_fork+0x31/0x70 [ 63.551742][ T11] ? __pfx_kthread+0x10/0x10 [ 63.552042][ T11] ret_from_fork_asm+0x1a/0x30 [ 63.552339][ T11] [ 63.552570][ T11] [ 63.552730][ T11] Allocated by task 677: [ 63.552962][ T11] kasan_save_stack+0x24/0x50 [ 63.553316][ T11] kasan_save_track+0x14/0x30 [ 63.553613][ T11] __kasan_slab_alloc+0x59/0x70 [ 63.553920][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 63.554240][ T11] copy_net_ns+0xc6/0x340 [ 63.554482][ T11] create_new_namespaces+0x35f/0x920 [ 63.554774][ T11] unshare_nsproxy_namespaces+0x8d/0x130 [ 63.555073][ T11] ksys_unshare+0x2a9/0x660 [ 63.555392][ T11] __x64_sys_unshare+0x31/0x40 [ 63.555693][ T11] do_syscall_64+0xc1/0x1d0 [ 63.555987][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 63.556387][ T11] [ 63.556526][ T11] Freed by task 11: [ 63.556770][ T11] kasan_save_stack+0x24/0x50 [ 63.557094][ T11] kasan_save_track+0x14/0x30 [ 63.557387][ T11] kasan_save_free_info+0x3b/0x60 [ 63.557686][ T11] __kasan_slab_free+0x38/0x50 [ 63.557994][ T11] kmem_cache_free+0xf8/0x330 [ 63.558317][ T11] cleanup_net+0x5a8/0xa40 [ 63.558619][ T11] process_one_work+0xe55/0x16d0 [ 63.558919][ T11] worker_thread+0x58c/0xce0 [ 63.559198][ T11] kthread+0x28a/0x350 [ 63.559445][ T11] ret_from_fork+0x31/0x70 [ 63.559741][ T11] ret_from_fork_asm+0x1a/0x30 [ 63.560044][ T11] [ 63.560195][ T11] Last potentially related work creation: [ 63.560468][ T11] kasan_save_stack+0x24/0x50 [ 63.560772][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 63.561076][ T11] insert_work+0x34/0x230 [ 63.561337][ T11] __queue_work+0x5fd/0xa40 [ 63.561643][ T11] queue_delayed_work_on+0x8c/0xa0 [ 63.561936][ T11] __inet_insert_ifa+0x751/0xb10 [ 63.562232][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 63.562534][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 63.562836][ T11] netlink_rcv_skb+0x130/0x360 [ 63.563125][ T11] netlink_unicast+0x44b/0x710 [ 63.563409][ T11] netlink_sendmsg+0x723/0xbe0 [ 63.563712][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 63.564010][ T11] ___sys_sendmsg+0xee/0x170 [ 63.564335][ T11] __sys_sendmsg+0x109/0x1a0 [ 63.564612][ T11] do_syscall_64+0xc1/0x1d0 [ 63.564909][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 63.565298][ T11] [ 63.565461][ T11] Second to last potentially related work creation: [ 63.565828][ T11] kasan_save_stack+0x24/0x50 [ 63.566129][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 63.566390][ T11] insert_work+0x34/0x230 [ 63.566595][ T11] __queue_work+0x5fd/0xa40 [ 63.566860][ T11] queue_delayed_work_on+0x8c/0xa0 [ 63.567179][ T11] __inet_insert_ifa+0x751/0xb10 [ 63.567470][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 63.567772][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 63.568070][ T11] netlink_rcv_skb+0x130/0x360 [ 63.568385][ T11] netlink_unicast+0x44b/0x710 [ 63.568682][ T11] netlink_sendmsg+0x723/0xbe0 [ 63.568976][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 63.569265][ T11] ___sys_sendmsg+0xee/0x170 [ 63.569529][ T11] __sys_sendmsg+0x109/0x1a0 [ 63.569838][ T11] do_syscall_64+0xc1/0x1d0 [ 63.570131][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 63.570494][ T11] [ 63.570661][ T11] The buggy address belongs to the object at ffff88800bc59980 [ 63.570661][ T11] which belongs to the cache net_namespace of size 6080 [ 63.571450][ T11] The buggy address is located 184 bytes inside of [ 63.571450][ T11] freed 6080-byte region [ffff88800bc59980, ffff88800bc5b140) [ 63.572120][ T11] [ 63.572244][ T11] The buggy address belongs to the physical page: [ 63.572618][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800bc5b2c0 pfn:0xbc58 [ 63.573209][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 63.573640][ T11] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 63.574006][ T11] page_type: f5(slab) [ 63.574266][ T11] raw: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 63.574763][ T11] raw: ffff88800bc5b2c0 0000000000050002 00000001f5000000 0000000000000000 [ 63.575243][ T11] head: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 63.575737][ T11] head: ffff88800bc5b2c0 0000000000050002 00000001f5000000 0000000000000000 [ 63.576260][ T11] head: 0080000000000003 ffffea00002f1601 ffffffffffffffff 0000000000000000 [ 63.576757][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 63.577171][ T11] page dumped because: kasan: bad access detected [ 63.577424][ T11] [ 63.577551][ T11] Memory state around the buggy address: [ 63.578068][ T11] ffff88800bc59900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 63.578600][ T11] ffff88800bc59980: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 63.579007][ T11] >ffff88800bc59a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 63.579406][ T11] ^ [ 63.579748][ T11] ffff88800bc59a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 63.580121][ T11] ffff88800bc59b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 63.580463][ T11] ================================================================== [ 63.580973][ T11] Disabling lock debugging due to kernel taint [ 64.945835][ T855] vx200: left allmulticast mode [ 64.946036][ T855] vx200: left promiscuous mode [ 64.946333][ T855] br2: port 1(vx200) entered disabled state [ 65.158435][ T858] veth2: left allmulticast mode [ 65.158656][ T858] veth2: left promiscuous mode [ 65.159910][ T858] br2: port 2(veth2.20) entered disabled state [ 65.178263][ T858] veth2.20 (unregistering): left allmulticast mode [ 65.178586][ T858] veth2.20 (unregistering): left promiscuous mode [ 65.178883][ T858] br2: port 2(veth2.20) entered disabled state [ 65.483992][ T862] br1: port 2(veth1) entered disabled state [ 65.541853][ T863] veth1: left allmulticast mode [ 65.542090][ T863] veth1: left promiscuous mode [ 65.542386][ T863] br1: port 2(veth1) entered disabled state [ 65.602883][ T864] vx100: left allmulticast mode [ 65.603082][ T864] vx100: left promiscuous mode [ 65.603729][ T864] br1: port 1(vx100) entered disabled state