[ 13.246049][ T297] eth0: renamed from r1h1 [ 13.255773][ T297] ip (297) used greatest stack depth: 24512 bytes left [ 13.453499][ T299] eth0: renamed from r2h1 [ 13.730402][ T302] eth2: renamed from r2h2 [ 13.840964][ T303] ip (303) used greatest stack depth: 23952 bytes left [ 14.028448][ T305] eth1: renamed from r2r1 [ 14.432433][ T310] br0: port 1(eth0) entered blocking state [ 14.432916][ T310] br0: port 1(eth0) entered disabled state [ 14.433195][ T310] eth0: entered allmulticast mode [ 14.434437][ T310] eth0: entered promiscuous mode [ 14.437421][ T39] br0: port 1(eth0) entered blocking state [ 14.437754][ T39] br0: port 1(eth0) entered forwarding state [ 14.518045][ T311] br0: port 2(eth1) entered blocking state [ 14.518306][ T311] br0: port 2(eth1) entered disabled state [ 14.518674][ T311] eth1: entered allmulticast mode [ 14.519872][ T311] eth1: entered promiscuous mode [ 14.521650][ T157] br0: port 2(eth1) entered blocking state [ 14.521894][ T157] br0: port 2(eth1) entered forwarding state [ 31.390272][ T66] eth1: left allmulticast mode [ 31.390563][ T66] eth1: left promiscuous mode [ 31.390896][ T66] br0: port 2(eth1) entered disabled state [ 31.393738][ T66] eth0: left allmulticast mode [ 31.393920][ T66] eth0: left promiscuous mode [ 31.394203][ T66] br0: port 1(eth0) entered disabled state [ 31.933412][ T66] ================================================================== [ 31.933746][ T66] BUG: KASAN: slab-use-after-free in cleanup_net+0xa5d/0xb90 [ 31.933965][ T66] Read of size 8 at addr ffff8880058b00f8 by task kworker/u16:1/66 [ 31.934170][ T66] [ 31.934245][ T66] CPU: 0 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.12.0-virtme #1 [ 31.934457][ T66] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 31.934632][ T66] Workqueue: netns cleanup_net [ 31.934782][ T66] Call Trace: [ 31.934909][ T66] [ 31.934986][ T66] dump_stack_lvl+0x82/0xd0 [ 31.935135][ T66] print_address_description.constprop.0+0x2c/0x3b0 [ 31.935316][ T66] ? cleanup_net+0xa5d/0xb90 [ 31.935460][ T66] print_report+0xb4/0x270 [ 31.935602][ T66] ? kasan_addr_to_slab+0x25/0x80 [ 31.935743][ T66] kasan_report+0xbd/0xf0 [ 31.935852][ T66] ? cleanup_net+0xa5d/0xb90 [ 31.935995][ T66] cleanup_net+0xa5d/0xb90 [ 31.936138][ T66] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 31.936286][ T66] ? __pfx_cleanup_net+0x10/0x10 [ 31.936427][ T66] ? trace_lock_acquire+0x148/0x1f0 [ 31.936568][ T66] ? lock_acquire+0x32/0xc0 [ 31.936707][ T66] ? process_one_work+0xe0b/0x16d0 [ 31.936850][ T66] process_one_work+0xe55/0x16d0 [ 31.936995][ T66] ? __pfx___lock_release+0x10/0x10 [ 31.937136][ T66] ? __pfx_process_one_work+0x10/0x10 [ 31.937278][ T66] ? assign_work+0x16c/0x240 [ 31.937455][ T66] worker_thread+0x58c/0xce0 [ 31.937598][ T66] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 31.937775][ T66] ? __pfx_worker_thread+0x10/0x10 [ 31.937918][ T66] ? __pfx_worker_thread+0x10/0x10 [ 31.938061][ T66] kthread+0x28a/0x350 [ 31.938168][ T66] ? __pfx_kthread+0x10/0x10 [ 31.938311][ T66] ret_from_fork+0x31/0x70 [ 31.938450][ T66] ? __pfx_kthread+0x10/0x10 [ 31.938604][ T66] ret_from_fork_asm+0x1a/0x30 [ 31.938749][ T66] [ 31.938860][ T66] [ 31.938932][ T66] Allocated by task 257: [ 31.939038][ T66] kasan_save_stack+0x24/0x50 [ 31.939182][ T66] kasan_save_track+0x14/0x30 [ 31.939330][ T66] __kasan_slab_alloc+0x59/0x70 [ 31.939469][ T66] kmem_cache_alloc_noprof+0x10b/0x350 [ 31.939628][ T66] copy_net_ns+0xc6/0x540 [ 31.939735][ T66] create_new_namespaces+0x35f/0x920 [ 31.939879][ T66] unshare_nsproxy_namespaces+0x8a/0x1b0 [ 31.940020][ T66] ksys_unshare+0x2c4/0x6e0 [ 31.940163][ T66] __x64_sys_unshare+0x31/0x40 [ 31.940304][ T66] do_syscall_64+0xc1/0x1d0 [ 31.940444][ T66] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 31.940620][ T66] [ 31.940691][ T66] Freed by task 66: [ 31.940802][ T66] kasan_save_stack+0x24/0x50 [ 31.940944][ T66] kasan_save_track+0x14/0x30 [ 31.941083][ T66] kasan_save_free_info+0x3b/0x60 [ 31.941227][ T66] __kasan_slab_free+0x38/0x50 [ 31.941367][ T66] kmem_cache_free+0xf8/0x330 [ 31.941521][ T66] cleanup_net+0x5a8/0xb90 [ 31.941662][ T66] process_one_work+0xe55/0x16d0 [ 31.941813][ T66] worker_thread+0x58c/0xce0 [ 31.941949][ T66] kthread+0x28a/0x350 [ 31.942054][ T66] ret_from_fork+0x31/0x70 [ 31.942192][ T66] ret_from_fork_asm+0x1a/0x30 [ 31.942333][ T66] [ 31.942404][ T66] Last potentially related work creation: [ 31.942543][ T66] kasan_save_stack+0x24/0x50 [ 31.942685][ T66] __kasan_record_aux_stack+0x8e/0xa0 [ 31.942826][ T66] insert_work+0x34/0x230 [ 31.942932][ T66] __queue_work+0x5fd/0xa40 [ 31.943070][ T66] queue_delayed_work_on+0x8c/0xa0 [ 31.943215][ T66] __inet_insert_ifa+0x751/0xb10 [ 31.943358][ T66] inet_rtm_newaddr+0x833/0xbd0 [ 31.943501][ T66] rtnetlink_rcv_msg+0x712/0xc10 [ 31.943654][ T66] netlink_rcv_skb+0x130/0x360 [ 31.943799][ T66] netlink_unicast+0x44b/0x710 [ 31.943944][ T66] netlink_sendmsg+0x723/0xbe0 [ 31.944086][ T66] ____sys_sendmsg+0x7ac/0xa10 [ 31.944227][ T66] ___sys_sendmsg+0xee/0x170 [ 31.944375][ T66] __sys_sendmsg+0x109/0x1a0 [ 31.944515][ T66] do_syscall_64+0xc1/0x1d0 [ 31.944655][ T66] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 31.944842][ T66] [ 31.944917][ T66] Second to last potentially related work creation: [ 31.945100][ T66] kasan_save_stack+0x24/0x50 [ 31.945242][ T66] __kasan_record_aux_stack+0x8e/0xa0 [ 31.945383][ T66] insert_work+0x34/0x230 [ 31.945490][ T66] __queue_work+0x5fd/0xa40 [ 31.945638][ T66] queue_delayed_work_on+0x8c/0xa0 [ 31.945779][ T66] __inet_insert_ifa+0x751/0xb10 [ 31.945929][ T66] inetdev_event+0xb18/0xcf0 [ 31.946068][ T66] notifier_call_chain+0xcd/0x150 [ 31.946205][ T66] __dev_notify_flags+0xe6/0x250 [ 31.946345][ T66] dev_change_flags+0xec/0x160 [ 31.946482][ T66] do_setlink.constprop.0+0x79d/0x2300 [ 31.946621][ T66] rtnl_newlink+0x6de/0xa80 [ 31.946760][ T66] rtnetlink_rcv_msg+0x712/0xc10 [ 31.946898][ T66] netlink_rcv_skb+0x130/0x360 [ 31.947035][ T66] netlink_unicast+0x44b/0x710 [ 31.947178][ T66] netlink_sendmsg+0x723/0xbe0 [ 31.947316][ T66] ____sys_sendmsg+0x7ac/0xa10 [ 31.947468][ T66] ___sys_sendmsg+0xee/0x170 [ 31.947674][ T66] __sys_sendmsg+0x109/0x1a0 [ 31.947816][ T66] do_syscall_64+0xc1/0x1d0 [ 31.947957][ T66] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 31.948193][ T66] [ 31.948264][ T66] The buggy address belongs to the object at ffff8880058b0040 [ 31.948264][ T66] which belongs to the cache net_namespace of size 6528 [ 31.948634][ T66] The buggy address is located 184 bytes inside of [ 31.948634][ T66] freed 6528-byte region [ffff8880058b0040, ffff8880058b19c0) [ 31.949027][ T66] [ 31.949097][ T66] The buggy address belongs to the physical page: [ 31.949265][ T66] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x58b0 [ 31.949577][ T66] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 31.949788][ T66] flags: 0x80000000000040(head|node=0|zone=1) [ 31.950025][ T66] page_type: f5(slab) [ 31.950133][ T66] raw: 0080000000000040 ffff888001975240 ffff88800197a0a8 ffff88800197a0a8 [ 31.950381][ T66] raw: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000 [ 31.950702][ T66] head: 0080000000000040 ffff888001975240 ffff88800197a0a8 ffff88800197a0a8 [ 31.950944][ T66] head: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000 [ 31.951184][ T66] head: 0080000000000003 ffffea0000162c01 ffffffffffffffff 0000000000000000 [ 31.951427][ T66] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 31.951670][ T66] page dumped because: kasan: bad access detected [ 31.951920][ T66] [ 31.951990][ T66] Memory state around the buggy address: [ 31.952126][ T66] ffff8880058aff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.952326][ T66] ffff8880058b0000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 31.952585][ T66] >ffff8880058b0080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.952791][ T66] ^ [ 31.953056][ T66] ffff8880058b0100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.953254][ T66] ffff8880058b0180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.953452][ T66] ================================================================== [ 31.953749][ T66] Disabling lock debugging due to kernel taint [ 35.627993][ T514] eth0: renamed from r1h1 [ 35.778963][ T516] eth0: renamed from r2h1 [ 35.968009][ T519] eth2: renamed from r2h2 [ 36.186964][ T522] eth1: renamed from r2r1 [ 37.091933][ T537] br0: port 1(eth0) entered blocking state [ 37.092195][ T537] br0: port 1(eth0) entered disabled state [ 37.092427][ T537] eth0: entered allmulticast mode [ 37.093344][ T537] eth0: entered promiscuous mode [ 37.094912][ T39] br0: port 1(eth0) entered blocking state [ 37.095115][ T39] br0: port 1(eth0) entered forwarding state [ 37.153119][ T538] br0: port 2(eth1) entered blocking state [ 37.153430][ T538] br0: port 2(eth1) entered disabled state [ 37.153906][ T538] eth1: entered allmulticast mode [ 37.154905][ T538] eth1: entered promiscuous mode [ 37.156813][ T37] br0: port 2(eth1) entered blocking state [ 37.157020][ T37] br0: port 2(eth1) entered forwarding state [ 52.044492][ T66] eth1: left allmulticast mode [ 52.044707][ T66] eth1: left promiscuous mode [ 52.044964][ T66] br0: port 2(eth1) entered disabled state [ 52.046162][ T66] eth0: left allmulticast mode [ 52.046341][ T66] eth0: left promiscuous mode [ 52.046586][ T66] br0: port 1(eth0) entered disabled state [ 56.179078][ T741] eth0: renamed from r1h1 [ 56.315103][ T743] eth0: renamed from r2h1 [ 56.513891][ T746] eth2: renamed from r2h2 [ 56.724252][ T749] eth1: renamed from r2r1 [ 57.006338][ T754] br0: port 1(eth0) entered blocking state [ 57.006627][ T754] br0: port 1(eth0) entered disabled state [ 57.006819][ T754] eth0: entered allmulticast mode [ 57.007728][ T754] eth0: entered promiscuous mode [ 57.009262][ T37] br0: port 1(eth0) entered blocking state [ 57.009470][ T37] br0: port 1(eth0) entered forwarding state [ 57.061810][ T755] br0: port 2(eth1) entered blocking state [ 57.062092][ T755] br0: port 2(eth1) entered disabled state [ 57.063169][ T755] eth1: entered allmulticast mode [ 57.064326][ T755] eth1: entered promiscuous mode [ 57.065626][ T37] br0: port 2(eth1) entered blocking state [ 57.065822][ T37] br0: port 2(eth1) entered forwarding state [ 72.244528][ T66] eth1: left allmulticast mode [ 72.244707][ T66] eth1: left promiscuous mode [ 72.244954][ T66] br0: port 2(eth1) entered disabled state [ 72.245952][ T66] eth0: left allmulticast mode [ 72.246099][ T66] eth0: left promiscuous mode [ 72.246367][ T66] br0: port 1(eth0) entered disabled state [ 76.223938][ T968] eth0: renamed from r1h1 [ 76.360970][ T970] eth0: renamed from r2h1 [ 76.562380][ T973] eth2: renamed from r2h2 [ 76.758905][ T976] eth1: renamed from r2r1 [ 77.648933][ T991] br0: port 1(eth0) entered blocking state [ 77.649241][ T991] br0: port 1(eth0) entered disabled state [ 77.649439][ T991] eth0: entered allmulticast mode [ 77.651375][ T991] eth0: entered promiscuous mode [ 77.652952][ T37] br0: port 1(eth0) entered blocking state [ 77.653147][ T37] br0: port 1(eth0) entered forwarding state [ 77.710267][ T992] br0: port 2(eth1) entered blocking state [ 77.710478][ T992] br0: port 2(eth1) entered disabled state [ 77.710673][ T992] eth1: entered allmulticast mode [ 77.711552][ T992] eth1: entered promiscuous mode [ 77.713065][ T157] br0: port 2(eth1) entered blocking state [ 77.713266][ T157] br0: port 2(eth1) entered forwarding state [ 92.610657][ T66] eth1: left allmulticast mode [ 92.610849][ T66] eth1: left promiscuous mode [ 92.611102][ T66] br0: port 2(eth1) entered disabled state [ 92.612176][ T66] eth0: left allmulticast mode [ 92.612363][ T66] eth0: left promiscuous mode [ 92.612600][ T66] br0: port 1(eth0) entered disabled state