[ 11.508876][ T279] veth0: renamed from veth-hv-1 [ 12.321608][ T294] br0: port 1(vxlan0) entered blocking state [ 12.322058][ T294] br0: port 1(vxlan0) entered disabled state [ 12.322318][ T294] vxlan0: entered allmulticast mode [ 12.323629][ T294] vxlan0: entered promiscuous mode [ 12.409836][ T295] br0: port 1(vxlan0) entered blocking state [ 12.410212][ T295] br0: port 1(vxlan0) entered forwarding state [ 12.569365][ T297] veth0: renamed from veth-hv-2 [ 13.246813][ T305] br0: port 1(vxlan0) entered blocking state [ 13.247079][ T305] br0: port 1(vxlan0) entered disabled state [ 13.247346][ T305] vxlan0: entered allmulticast mode [ 13.248539][ T305] vxlan0: entered promiscuous mode [ 13.317551][ T306] br0: port 1(vxlan0) entered blocking state [ 13.317828][ T306] br0: port 1(vxlan0) entered forwarding state [ 13.785451][ T312] br0: port 2(veth-tap) entered blocking state [ 13.785975][ T312] br0: port 2(veth-tap) entered disabled state [ 13.786292][ T312] veth-tap: entered allmulticast mode [ 13.787567][ T312] veth-tap: entered promiscuous mode [ 14.235362][ T39] br0: port 2(veth-tap) entered blocking state [ 14.235842][ T39] br0: port 2(veth-tap) entered forwarding state [ 14.588995][ T322] br0: port 2(veth-tap) entered blocking state [ 14.589397][ T322] br0: port 2(veth-tap) entered disabled state [ 14.589687][ T322] veth-tap: entered allmulticast mode [ 14.591060][ T322] veth-tap: entered promiscuous mode [ 15.018988][ T37] br0: port 2(veth-tap) entered blocking state [ 15.019225][ T37] br0: port 2(veth-tap) entered forwarding state [ 15.495350][ T332] br0: port 1(vxlan0) entered disabled state [ 15.564676][ T333] br0: port 1(vxlan0) entered blocking state [ 15.565013][ T333] br0: port 1(vxlan0) entered forwarding state [ 15.754677][ T335] br0: port 1(vxlan0) entered disabled state [ 15.840784][ T336] br0: port 1(vxlan0) entered blocking state [ 15.841182][ T336] br0: port 1(vxlan0) entered forwarding state [ 16.591685][ T67] veth-tap: left allmulticast mode [ 16.592055][ T67] veth-tap: left promiscuous mode [ 16.592470][ T67] br0: port 2(veth-tap) entered disabled state [ 16.595022][ T67] vxlan0: left allmulticast mode [ 16.595466][ T67] vxlan0: left promiscuous mode [ 16.595825][ T67] br0: port 1(vxlan0) entered disabled state [ 16.902967][ T67] br0: port 1(vxlan0) entered disabled state [ 16.921431][ T67] vxlan0 (unregistering): left allmulticast mode [ 16.921694][ T67] vxlan0 (unregistering): left promiscuous mode [ 16.922005][ T67] br0: port 1(vxlan0) entered disabled state [ 16.988140][ T67] veth-tap: left allmulticast mode [ 16.988420][ T67] veth-tap: left promiscuous mode [ 16.988790][ T67] br0: port 2(veth-tap) entered disabled state [ 17.229866][ T67] ================================================================== [ 17.230136][ T67] BUG: KASAN: slab-use-after-free in cleanup_net+0xa5d/0xb90 [ 17.230350][ T67] Read of size 8 at addr ffff888009c480f8 by task kworker/u16:1/67 [ 17.230554][ T67] [ 17.230626][ T67] CPU: 0 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.12.0-virtme #1 [ 17.230835][ T67] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 17.231045][ T67] Workqueue: netns cleanup_net [ 17.231194][ T67] Call Trace: [ 17.231302][ T67] [ 17.231381][ T67] dump_stack_lvl+0x82/0xd0 [ 17.231523][ T67] print_address_description.constprop.0+0x2c/0x3b0 [ 17.231700][ T67] ? cleanup_net+0xa5d/0xb90 [ 17.231870][ T67] print_report+0xb4/0x270 [ 17.232022][ T67] ? kasan_addr_to_slab+0x25/0x80 [ 17.232160][ T67] kasan_report+0xbd/0xf0 [ 17.232268][ T67] ? cleanup_net+0xa5d/0xb90 [ 17.232413][ T67] cleanup_net+0xa5d/0xb90 [ 17.232560][ T67] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 17.232708][ T67] ? __pfx_cleanup_net+0x10/0x10 [ 17.232852][ T67] ? trace_lock_acquire+0x148/0x1f0 [ 17.233006][ T67] ? lock_acquire+0x32/0xc0 [ 17.233146][ T67] ? process_one_work+0xe0b/0x16d0 [ 17.233285][ T67] process_one_work+0xe55/0x16d0 [ 17.233437][ T67] ? __pfx___lock_release+0x10/0x10 [ 17.233576][ T67] ? __pfx_process_one_work+0x10/0x10 [ 17.233724][ T67] ? assign_work+0x16c/0x240 [ 17.233872][ T67] worker_thread+0x58c/0xce0 [ 17.234015][ T67] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 17.234191][ T67] ? __pfx_worker_thread+0x10/0x10 [ 17.234329][ T67] ? __pfx_worker_thread+0x10/0x10 [ 17.234471][ T67] kthread+0x28a/0x350 [ 17.234585][ T67] ? __pfx_kthread+0x10/0x10 [ 17.234722][ T67] ret_from_fork+0x31/0x70 [ 17.234874][ T67] ? __pfx_kthread+0x10/0x10 [ 17.235022][ T67] ret_from_fork_asm+0x1a/0x30 [ 17.235176][ T67] [ 17.235280][ T67] [ 17.235350][ T67] Allocated by task 261: [ 17.235474][ T67] kasan_save_stack+0x24/0x50 [ 17.235621][ T67] kasan_save_track+0x14/0x30 [ 17.235762][ T67] __kasan_slab_alloc+0x59/0x70 [ 17.235917][ T67] kmem_cache_alloc_noprof+0x10b/0x350 [ 17.236066][ T67] copy_net_ns+0xc6/0x540 [ 17.236178][ T67] create_new_namespaces+0x35f/0x920 [ 17.236334][ T67] unshare_nsproxy_namespaces+0x8a/0x1b0 [ 17.236486][ T67] ksys_unshare+0x2c4/0x6e0 [ 17.236641][ T67] __x64_sys_unshare+0x31/0x40 [ 17.236782][ T67] do_syscall_64+0xc1/0x1d0 [ 17.236925][ T67] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 17.237110][ T67] [ 17.237180][ T67] Freed by task 67: [ 17.237282][ T67] kasan_save_stack+0x24/0x50 [ 17.237418][ T67] kasan_save_track+0x14/0x30 [ 17.237552][ T67] kasan_save_free_info+0x3b/0x60 [ 17.237698][ T67] __kasan_slab_free+0x38/0x50 [ 17.237845][ T67] kmem_cache_free+0xf8/0x330 [ 17.237995][ T67] cleanup_net+0x5a8/0xb90 [ 17.238137][ T67] process_one_work+0xe55/0x16d0 [ 17.238282][ T67] worker_thread+0x58c/0xce0 [ 17.238432][ T67] kthread+0x28a/0x350 [ 17.238539][ T67] ret_from_fork+0x31/0x70 [ 17.238673][ T67] ret_from_fork_asm+0x1a/0x30 [ 17.238809][ T67] [ 17.238880][ T67] Last potentially related work creation: [ 17.239022][ T67] kasan_save_stack+0x24/0x50 [ 17.239161][ T67] __kasan_record_aux_stack+0x8e/0xa0 [ 17.239303][ T67] insert_work+0x34/0x230 [ 17.239408][ T67] __queue_work+0x5fd/0xa40 [ 17.239543][ T67] queue_delayed_work_on+0x8c/0xa0 [ 17.239679][ T67] __inet_insert_ifa+0x751/0xb10 [ 17.239820][ T67] inet_rtm_newaddr+0x833/0xbd0 [ 17.239966][ T67] rtnetlink_rcv_msg+0x712/0xc10 [ 17.240111][ T67] netlink_rcv_skb+0x130/0x360 [ 17.240250][ T67] netlink_unicast+0x44b/0x710 [ 17.240384][ T67] netlink_sendmsg+0x723/0xbe0 [ 17.240528][ T67] ____sys_sendmsg+0x7ac/0xa10 [ 17.240678][ T67] ___sys_sendmsg+0xee/0x170 [ 17.240818][ T67] __sys_sendmsg+0x109/0x1a0 [ 17.240963][ T67] do_syscall_64+0xc1/0x1d0 [ 17.241103][ T67] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 17.241278][ T67] [ 17.241347][ T67] Second to last potentially related work creation: [ 17.241518][ T67] kasan_save_stack+0x24/0x50 [ 17.241668][ T67] __kasan_record_aux_stack+0x8e/0xa0 [ 17.241823][ T67] insert_work+0x34/0x230 [ 17.241940][ T67] __queue_work+0x5fd/0xa40 [ 17.242080][ T67] queue_delayed_work_on+0x8c/0xa0 [ 17.242216][ T67] __inet_insert_ifa+0x751/0xb10 [ 17.242360][ T67] inetdev_event+0xb18/0xcf0 [ 17.242506][ T67] notifier_call_chain+0xcd/0x150 [ 17.242642][ T67] __dev_notify_flags+0xe6/0x250 [ 17.242779][ T67] dev_change_flags+0xec/0x160 [ 17.242922][ T67] do_setlink.constprop.0+0x79d/0x2300 [ 17.243069][ T67] rtnl_newlink+0x6de/0xa80 [ 17.243209][ T67] rtnetlink_rcv_msg+0x712/0xc10 [ 17.243359][ T67] netlink_rcv_skb+0x130/0x360 [ 17.243496][ T67] netlink_unicast+0x44b/0x710 [ 17.243637][ T67] netlink_sendmsg+0x723/0xbe0 [ 17.243778][ T67] ____sys_sendmsg+0x7ac/0xa10 [ 17.243930][ T67] ___sys_sendmsg+0xee/0x170 [ 17.244076][ T67] __sys_sendmsg+0x109/0x1a0 [ 17.244214][ T67] do_syscall_64+0xc1/0x1d0 [ 17.244360][ T67] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 17.244537][ T67] [ 17.244608][ T67] The buggy address belongs to the object at ffff888009c48040 [ 17.244608][ T67] which belongs to the cache net_namespace of size 6528 [ 17.244986][ T67] The buggy address is located 184 bytes inside of [ 17.244986][ T67] freed 6528-byte region [ffff888009c48040, ffff888009c499c0) [ 17.245327][ T67] [ 17.245399][ T67] The buggy address belongs to the physical page: [ 17.245574][ T67] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x9c48 [ 17.245831][ T67] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 17.246053][ T67] flags: 0x80000000000040(head|node=0|zone=1) [ 17.246231][ T67] page_type: f5(slab) [ 17.246346][ T67] raw: 0080000000000040 ffff888001975240 ffff88800197a0a8 ffff88800197a0a8 [ 17.246609][ T67] raw: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000 [ 17.246858][ T67] head: 0080000000000040 ffff888001975240 ffff88800197a0a8 ffff88800197a0a8 [ 17.247116][ T67] head: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000 [ 17.247361][ T67] head: 0080000000000003 ffffea0000271201 ffffffffffffffff 0000000000000000 [ 17.247616][ T67] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 17.247858][ T67] page dumped because: kasan: bad access detected [ 17.248040][ T67] [ 17.248113][ T67] Memory state around the buggy address: [ 17.248259][ T67] ffff888009c47f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.248463][ T67] ffff888009c48000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 17.248667][ T67] >ffff888009c48080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.248868][ T67] ^ [ 17.249084][ T67] ffff888009c48100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.249281][ T67] ffff888009c48180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.249475][ T67] ================================================================== [ 17.249706][ T67] Disabling lock debugging due to kernel taint