[ 11.549529][ T279] veth0: renamed from veth-hv-1 [ 12.377732][ T294] br0: port 1(vxlan0) entered blocking state [ 12.378204][ T294] br0: port 1(vxlan0) entered disabled state [ 12.378505][ T294] vxlan0: entered allmulticast mode [ 12.379889][ T294] vxlan0: entered promiscuous mode [ 12.466887][ T296] br0: port 1(vxlan0) entered blocking state [ 12.467370][ T296] br0: port 1(vxlan0) entered forwarding state [ 12.481510][ T296] ip (296) used greatest stack depth: 23696 bytes left [ 12.650513][ T298] veth0: renamed from veth-hv-2 [ 13.310785][ T306] br0: port 1(vxlan0) entered blocking state [ 13.311078][ T306] br0: port 1(vxlan0) entered disabled state [ 13.311551][ T306] vxlan0: entered allmulticast mode [ 13.312815][ T306] vxlan0: entered promiscuous mode [ 13.403493][ T307] br0: port 1(vxlan0) entered blocking state [ 13.403794][ T307] br0: port 1(vxlan0) entered forwarding state [ 13.837064][ T313] br0: port 2(veth-tap) entered blocking state [ 13.837348][ T313] br0: port 2(veth-tap) entered disabled state [ 13.837606][ T313] veth-tap: entered allmulticast mode [ 13.838868][ T313] veth-tap: entered promiscuous mode [ 14.276464][ T37] br0: port 2(veth-tap) entered blocking state [ 14.276931][ T37] br0: port 2(veth-tap) entered forwarding state [ 14.584939][ T323] br0: port 2(veth-tap) entered blocking state [ 14.585245][ T323] br0: port 2(veth-tap) entered disabled state [ 14.585528][ T323] veth-tap: entered allmulticast mode [ 14.586770][ T323] veth-tap: entered promiscuous mode [ 15.041483][ T37] br0: port 2(veth-tap) entered blocking state [ 15.041766][ T37] br0: port 2(veth-tap) entered forwarding state [ 15.513348][ T333] br0: port 1(vxlan0) entered disabled state [ 15.599766][ T334] br0: port 1(vxlan0) entered blocking state [ 15.600438][ T334] br0: port 1(vxlan0) entered forwarding state [ 15.787352][ T336] br0: port 1(vxlan0) entered disabled state [ 15.856951][ T337] br0: port 1(vxlan0) entered blocking state [ 15.857318][ T337] br0: port 1(vxlan0) entered forwarding state [ 16.584139][ T65] veth-tap: left allmulticast mode [ 16.584469][ T65] veth-tap: left promiscuous mode [ 16.584795][ T65] br0: port 2(veth-tap) entered disabled state [ 16.587095][ T65] vxlan0: left allmulticast mode [ 16.587323][ T65] vxlan0: left promiscuous mode [ 16.587699][ T65] br0: port 1(vxlan0) entered disabled state [ 17.046705][ T65] br0: port 1(vxlan0) entered disabled state [ 17.070029][ T65] vxlan0 (unregistering): left allmulticast mode [ 17.070364][ T65] vxlan0 (unregistering): left promiscuous mode [ 17.070614][ T65] br0: port 1(vxlan0) entered disabled state [ 17.122966][ T65] veth-tap: left allmulticast mode [ 17.123212][ T65] veth-tap: left promiscuous mode [ 17.123556][ T65] br0: port 2(veth-tap) entered disabled state [ 17.395600][ T65] ================================================================== [ 17.395847][ T65] BUG: KASAN: slab-use-after-free in cleanup_net+0xa5d/0xb90 [ 17.396058][ T65] Read of size 8 at addr ffff8880026d00f8 by task kworker/u16:1/65 [ 17.396262][ T65] [ 17.396333][ T65] CPU: 2 UID: 0 PID: 65 Comm: kworker/u16:1 Not tainted 6.12.0-virtme #1 [ 17.396540][ T65] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 17.396715][ T65] Workqueue: netns cleanup_net [ 17.396860][ T65] Call Trace: [ 17.396966][ T65] [ 17.397038][ T65] dump_stack_lvl+0x82/0xd0 [ 17.397186][ T65] print_address_description.constprop.0+0x2c/0x3b0 [ 17.397365][ T65] ? cleanup_net+0xa5d/0xb90 [ 17.397517][ T65] print_report+0xb4/0x270 [ 17.397653][ T65] ? kasan_addr_to_slab+0x25/0x80 [ 17.397789][ T65] kasan_report+0xbd/0xf0 [ 17.397896][ T65] ? cleanup_net+0xa5d/0xb90 [ 17.398032][ T65] cleanup_net+0xa5d/0xb90 [ 17.398167][ T65] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 17.398307][ T65] ? __pfx_cleanup_net+0x10/0x10 [ 17.398442][ T65] ? trace_lock_acquire+0x148/0x1f0 [ 17.398579][ T65] ? lock_acquire+0x32/0xc0 [ 17.398716][ T65] ? process_one_work+0xe0b/0x16d0 [ 17.398856][ T65] process_one_work+0xe55/0x16d0 [ 17.398998][ T65] ? __pfx___lock_release+0x10/0x10 [ 17.399135][ T65] ? __pfx_process_one_work+0x10/0x10 [ 17.399272][ T65] ? assign_work+0x16c/0x240 [ 17.399412][ T65] worker_thread+0x58c/0xce0 [ 17.399549][ T65] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 17.399720][ T65] ? __pfx_worker_thread+0x10/0x10 [ 17.399859][ T65] ? __pfx_worker_thread+0x10/0x10 [ 17.399995][ T65] kthread+0x28a/0x350 [ 17.400105][ T65] ? __pfx_kthread+0x10/0x10 [ 17.400242][ T65] ret_from_fork+0x31/0x70 [ 17.400383][ T65] ? __pfx_kthread+0x10/0x10 [ 17.400522][ T65] ret_from_fork_asm+0x1a/0x30 [ 17.400668][ T65] [ 17.400772][ T65] [ 17.400842][ T65] Allocated by task 262: [ 17.400946][ T65] kasan_save_stack+0x24/0x50 [ 17.401084][ T65] kasan_save_track+0x14/0x30 [ 17.401218][ T65] __kasan_slab_alloc+0x59/0x70 [ 17.401354][ T65] kmem_cache_alloc_noprof+0x10b/0x350 [ 17.401498][ T65] copy_net_ns+0xc6/0x540 [ 17.401611][ T65] create_new_namespaces+0x35f/0x920 [ 17.401749][ T65] unshare_nsproxy_namespaces+0x8a/0x1b0 [ 17.401887][ T65] ksys_unshare+0x2c4/0x6e0 [ 17.402026][ T65] __x64_sys_unshare+0x31/0x40 [ 17.402162][ T65] do_syscall_64+0xc1/0x1d0 [ 17.402325][ T65] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 17.402498][ T65] [ 17.402568][ T65] Freed by task 65: [ 17.402669][ T65] kasan_save_stack+0x24/0x50 [ 17.402800][ T65] kasan_save_track+0x14/0x30 [ 17.402934][ T65] kasan_save_free_info+0x3b/0x60 [ 17.403070][ T65] __kasan_slab_free+0x38/0x50 [ 17.403204][ T65] kmem_cache_free+0xf8/0x330 [ 17.403343][ T65] cleanup_net+0x5a8/0xb90 [ 17.403480][ T65] process_one_work+0xe55/0x16d0 [ 17.403615][ T65] worker_thread+0x58c/0xce0 [ 17.403752][ T65] kthread+0x28a/0x350 [ 17.403857][ T65] ret_from_fork+0x31/0x70 [ 17.403997][ T65] ret_from_fork_asm+0x1a/0x30 [ 17.404126][ T65] [ 17.404198][ T65] Last potentially related work creation: [ 17.404337][ T65] kasan_save_stack+0x24/0x50 [ 17.404476][ T65] __kasan_record_aux_stack+0x8e/0xa0 [ 17.404624][ T65] insert_work+0x34/0x230 [ 17.404733][ T65] __queue_work+0x5fd/0xa40 [ 17.404872][ T65] queue_delayed_work_on+0x8c/0xa0 [ 17.405009][ T65] __inet_insert_ifa+0x751/0xb10 [ 17.405151][ T65] inet_rtm_newaddr+0x833/0xbd0 [ 17.405292][ T65] rtnetlink_rcv_msg+0x712/0xc10 [ 17.405442][ T65] netlink_rcv_skb+0x130/0x360 [ 17.405587][ T65] netlink_unicast+0x44b/0x710 [ 17.405727][ T65] netlink_sendmsg+0x723/0xbe0 [ 17.405870][ T65] ____sys_sendmsg+0x7ac/0xa10 [ 17.406018][ T65] ___sys_sendmsg+0xee/0x170 [ 17.406159][ T65] __sys_sendmsg+0x109/0x1a0 [ 17.406301][ T65] do_syscall_64+0xc1/0x1d0 [ 17.406440][ T65] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 17.406616][ T65] [ 17.406686][ T65] Second to last potentially related work creation: [ 17.406856][ T65] kasan_save_stack+0x24/0x50 [ 17.406995][ T65] __kasan_record_aux_stack+0x8e/0xa0 [ 17.407134][ T65] insert_work+0x34/0x230 [ 17.407239][ T65] __queue_work+0x5fd/0xa40 [ 17.407379][ T65] queue_delayed_work_on+0x8c/0xa0 [ 17.407522][ T65] __inet_insert_ifa+0x751/0xb10 [ 17.407667][ T65] inetdev_event+0xb18/0xcf0 [ 17.407801][ T65] notifier_call_chain+0xcd/0x150 [ 17.407942][ T65] __dev_notify_flags+0xe6/0x250 [ 17.408076][ T65] dev_change_flags+0xec/0x160 [ 17.408212][ T65] do_setlink.constprop.0+0x79d/0x2300 [ 17.408347][ T65] rtnl_newlink+0x6de/0xa80 [ 17.408483][ T65] rtnetlink_rcv_msg+0x712/0xc10 [ 17.408620][ T65] netlink_rcv_skb+0x130/0x360 [ 17.408756][ T65] netlink_unicast+0x44b/0x710 [ 17.408893][ T65] netlink_sendmsg+0x723/0xbe0 [ 17.409029][ T65] ____sys_sendmsg+0x7ac/0xa10 [ 17.409166][ T65] ___sys_sendmsg+0xee/0x170 [ 17.409302][ T65] __sys_sendmsg+0x109/0x1a0 [ 17.409448][ T65] do_syscall_64+0xc1/0x1d0 [ 17.409585][ T65] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 17.409754][ T65] [ 17.409822][ T65] The buggy address belongs to the object at ffff8880026d0040 [ 17.409822][ T65] which belongs to the cache net_namespace of size 6528 [ 17.410179][ T65] The buggy address is located 184 bytes inside of [ 17.410179][ T65] freed 6528-byte region [ffff8880026d0040, ffff8880026d19c0) [ 17.410504][ T65] [ 17.410574][ T65] The buggy address belongs to the physical page: [ 17.410740][ T65] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x26d0 [ 17.410975][ T65] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 17.411185][ T65] flags: 0x80000000000040(head|node=0|zone=1) [ 17.411359][ T65] page_type: f5(slab) [ 17.411467][ T65] raw: 0080000000000040 ffff888001975240 ffff88800197a0a8 ffff88800197a0a8 [ 17.411713][ T65] raw: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000 [ 17.411955][ T65] head: 0080000000000040 ffff888001975240 ffff88800197a0a8 ffff88800197a0a8 [ 17.412198][ T65] head: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000 [ 17.412455][ T65] head: 0080000000000003 ffffea000009b401 ffffffffffffffff 0000000000000000 [ 17.412699][ T65] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 17.412941][ T65] page dumped because: kasan: bad access detected [ 17.413107][ T65] [ 17.413177][ T65] Memory state around the buggy address: [ 17.413311][ T65] ffff8880026cff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 17.413509][ T65] ffff8880026d0000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 17.413709][ T65] >ffff8880026d0080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.413908][ T65] ^ [ 17.414103][ T65] ffff8880026d0100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.414298][ T65] ffff8880026d0180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.414494][ T65] ================================================================== [ 17.414752][ T65] Disabling lock debugging due to kernel taint