[ 1262.705773][ T6412] br1: port 1(vx100) entered blocking state [ 1262.706051][ T6412] br1: port 1(vx100) entered disabled state [ 1262.706436][ T6412] vx100: entered allmulticast mode [ 1262.708609][ T6412] vx100: entered promiscuous mode [ 1262.709389][ T6412] br1: port 1(vx100) entered blocking state [ 1262.709634][ T6412] br1: port 1(vx100) entered forwarding state [ 1262.859030][ T6414] br1: port 2(veth1) entered blocking state [ 1262.859327][ T6414] br1: port 2(veth1) entered disabled state [ 1262.859604][ T6414] veth1: entered allmulticast mode [ 1262.862462][ T6414] veth1: entered promiscuous mode [ 1262.949280][ T44] br1: port 2(veth1) entered blocking state [ 1262.949624][ T44] br1: port 2(veth1) entered forwarding state [ 1263.146118][ T6417] br1: port 3(veth2) entered blocking state [ 1263.147673][ T6417] br1: port 3(veth2) entered disabled state [ 1263.148141][ T6417] veth2: entered allmulticast mode [ 1263.151481][ T6417] veth2: entered promiscuous mode [ 1263.251422][ T44] br1: port 3(veth2) entered blocking state [ 1263.251747][ T44] br1: port 3(veth2) entered forwarding state [ 1266.677050][ T6471] br2: port 1(w1) entered blocking state [ 1266.677304][ T6471] br2: port 1(w1) entered disabled state [ 1266.677538][ T6471] w1: entered allmulticast mode [ 1266.679839][ T6471] w1: entered promiscuous mode [ 1267.288017][ T6478] br2: port 2(vx100) entered blocking state [ 1267.288449][ T6478] br2: port 2(vx100) entered disabled state [ 1267.288767][ T6478] vx100: entered allmulticast mode [ 1267.290891][ T6478] vx100: entered promiscuous mode [ 1267.291411][ T6478] br2: port 2(vx100) entered blocking state [ 1267.291652][ T6478] br2: port 2(vx100) entered forwarding state [ 1268.064075][ T251] br2: port 1(w1) entered blocking state [ 1268.064455][ T251] br2: port 1(w1) entered forwarding state [ 1270.641127][ T6519] br2: port 1(w1) entered blocking state [ 1270.641427][ T6519] br2: port 1(w1) entered disabled state [ 1270.641699][ T6519] w1: entered allmulticast mode [ 1270.643634][ T6519] w1: entered promiscuous mode [ 1271.243652][ T6526] br2: port 2(vx100) entered blocking state [ 1271.243957][ T6526] br2: port 2(vx100) entered disabled state [ 1271.244256][ T6526] vx100: entered allmulticast mode [ 1271.246366][ T6526] vx100: entered promiscuous mode [ 1271.246926][ T6526] br2: port 2(vx100) entered blocking state [ 1271.247216][ T6526] br2: port 2(vx100) entered forwarding state [ 1271.941442][ T44] br2: port 1(w1) entered blocking state [ 1271.941739][ T44] br2: port 1(w1) entered forwarding state [ 1284.403465][ T11] vx100: left allmulticast mode [ 1284.403987][ T11] vx100: left promiscuous mode [ 1284.404605][ T11] br2: port 2(vx100) entered disabled state [ 1284.410932][ T11] w1: left allmulticast mode [ 1284.411301][ T11] w1: left promiscuous mode [ 1284.411796][ T11] br2: port 1(w1) entered disabled state [ 1284.957122][ T11] vx100: left allmulticast mode [ 1284.957377][ T11] vx100: left promiscuous mode [ 1284.957707][ T11] br2: port 2(vx100) entered disabled state [ 1284.962095][ T11] w1: left allmulticast mode [ 1284.962326][ T11] w1: left promiscuous mode [ 1284.962649][ T11] br2: port 1(w1) entered disabled state [ 1285.333196][ T11] ================================================================== [ 1285.333468][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 1285.333689][ T11] Read of size 8 at addr ffff88800f399a38 by task kworker/u16:0/11 [ 1285.333900][ T11] [ 1285.333982][ T11] CPU: 1 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 1285.334204][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1285.334381][ T11] Workqueue: netns cleanup_net [ 1285.334536][ T11] Call Trace: [ 1285.334647][ T11] [ 1285.334723][ T11] dump_stack_lvl+0x82/0xd0 [ 1285.334872][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 1285.335051][ T11] ? cleanup_net+0x932/0xa40 [ 1285.335193][ T11] print_report+0xb4/0x270 [ 1285.335337][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 1285.335479][ T11] kasan_report+0xbd/0xf0 [ 1285.335594][ T11] ? cleanup_net+0x932/0xa40 [ 1285.335737][ T11] cleanup_net+0x932/0xa40 [ 1285.335887][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 1285.336038][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 1285.336178][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 1285.336326][ T11] ? lock_acquire+0x32/0xc0 [ 1285.336468][ T11] ? process_one_work+0xe0b/0x16d0 [ 1285.336611][ T11] process_one_work+0xe55/0x16d0 [ 1285.336766][ T11] ? __pfx___lock_release+0x10/0x10 [ 1285.336916][ T11] ? __pfx_process_one_work+0x10/0x10 [ 1285.337064][ T11] ? assign_work+0x16c/0x240 [ 1285.337212][ T11] worker_thread+0x58c/0xce0 [ 1285.337361][ T11] ? __pfx_worker_thread+0x10/0x10 [ 1285.337501][ T11] kthread+0x28a/0x350 [ 1285.337611][ T11] ? __pfx_kthread+0x10/0x10 [ 1285.337754][ T11] ret_from_fork+0x31/0x70 [ 1285.337900][ T11] ? __pfx_kthread+0x10/0x10 [ 1285.338027][ T11] ret_from_fork_asm+0x1a/0x30 [ 1285.338174][ T11] [ 1285.338282][ T11] [ 1285.338347][ T11] Allocated by task 6498: [ 1285.338444][ T11] kasan_save_stack+0x24/0x50 [ 1285.338578][ T11] kasan_save_track+0x14/0x30 [ 1285.338712][ T11] __kasan_slab_alloc+0x59/0x70 [ 1285.338848][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 1285.338977][ T11] copy_net_ns+0xc6/0x340 [ 1285.339089][ T11] create_new_namespaces+0x35f/0x920 [ 1285.339220][ T11] unshare_nsproxy_namespaces+0x8d/0x130 [ 1285.339349][ T11] ksys_unshare+0x2a9/0x660 [ 1285.339483][ T11] __x64_sys_unshare+0x31/0x40 [ 1285.339611][ T11] do_syscall_64+0xc1/0x1d0 [ 1285.339746][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1285.339912][ T11] [ 1285.339978][ T11] Freed by task 11: [ 1285.340075][ T11] kasan_save_stack+0x24/0x50 [ 1285.340202][ T11] kasan_save_track+0x14/0x30 [ 1285.340336][ T11] kasan_save_free_info+0x3b/0x60 [ 1285.340467][ T11] __kasan_slab_free+0x38/0x50 [ 1285.340593][ T11] kmem_cache_free+0xf8/0x330 [ 1285.340718][ T11] cleanup_net+0x5a8/0xa40 [ 1285.340856][ T11] process_one_work+0xe55/0x16d0 [ 1285.340993][ T11] worker_thread+0x58c/0xce0 [ 1285.341122][ T11] kthread+0x28a/0x350 [ 1285.341223][ T11] ret_from_fork+0x31/0x70 [ 1285.341363][ T11] ret_from_fork_asm+0x1a/0x30 [ 1285.341493][ T11] [ 1285.341560][ T11] Last potentially related work creation: [ 1285.341700][ T11] kasan_save_stack+0x24/0x50 [ 1285.341838][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 1285.341968][ T11] insert_work+0x34/0x230 [ 1285.342069][ T11] __queue_work+0x5fd/0xa40 [ 1285.342207][ T11] queue_delayed_work_on+0x8c/0xa0 [ 1285.342333][ T11] __inet_insert_ifa+0x751/0xb10 [ 1285.342469][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 1285.342606][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 1285.342736][ T11] netlink_rcv_skb+0x130/0x360 [ 1285.342867][ T11] netlink_unicast+0x44b/0x710 [ 1285.342993][ T11] netlink_sendmsg+0x723/0xbe0 [ 1285.343122][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 1285.343266][ T11] ___sys_sendmsg+0xee/0x170 [ 1285.343394][ T11] __sys_sendmsg+0x109/0x1a0 [ 1285.343523][ T11] do_syscall_64+0xc1/0x1d0 [ 1285.343651][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1285.343815][ T11] [ 1285.343882][ T11] Second to last potentially related work creation: [ 1285.344040][ T11] kasan_save_stack+0x24/0x50 [ 1285.344176][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 1285.344310][ T11] insert_work+0x34/0x230 [ 1285.344404][ T11] __queue_work+0x5fd/0xa40 [ 1285.344532][ T11] queue_delayed_work_on+0x8c/0xa0 [ 1285.344656][ T11] __inet_insert_ifa+0x751/0xb10 [ 1285.344786][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 1285.344912][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 1285.345043][ T11] netlink_rcv_skb+0x130/0x360 [ 1285.345174][ T11] netlink_unicast+0x44b/0x710 [ 1285.345303][ T11] netlink_sendmsg+0x723/0xbe0 [ 1285.345432][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 1285.345561][ T11] ___sys_sendmsg+0xee/0x170 [ 1285.345701][ T11] __sys_sendmsg+0x109/0x1a0 [ 1285.345836][ T11] do_syscall_64+0xc1/0x1d0 [ 1285.345965][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1285.346125][ T11] [ 1285.346196][ T11] The buggy address belongs to the object at ffff88800f399980 [ 1285.346196][ T11] which belongs to the cache net_namespace of size 6080 [ 1285.346532][ T11] The buggy address is located 184 bytes inside of [ 1285.346532][ T11] freed 6080-byte region [ffff88800f399980, ffff88800f39b140) [ 1285.346872][ T11] [ 1285.346938][ T11] The buggy address belongs to the physical page: [ 1285.347105][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800f39b2c0 pfn:0xf398 [ 1285.347365][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 1285.347560][ T11] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 1285.347729][ T11] page_type: f5(slab) [ 1285.347841][ T11] raw: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 1285.348080][ T11] raw: ffff88800f39b2c0 0000000000050002 00000001f5000000 0000000000000000 [ 1285.348305][ T11] head: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 1285.348540][ T11] head: ffff88800f39b2c0 0000000000050002 00000001f5000000 0000000000000000 [ 1285.348776][ T11] head: 0080000000000003 ffffea00003ce601 ffffffffffffffff 0000000000000000 [ 1285.349086][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 1285.349307][ T11] page dumped because: kasan: bad access detected [ 1285.349476][ T11] [ 1285.349543][ T11] Memory state around the buggy address: [ 1285.349725][ T11] ffff88800f399900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 1285.349932][ T11] ffff88800f399980: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1285.350127][ T11] >ffff88800f399a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1285.350309][ T11] ^ [ 1285.350492][ T11] ffff88800f399a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1285.350734][ T11] ffff88800f399b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1285.350939][ T11] ================================================================== [ 1285.351208][ T11] Disabling lock debugging due to kernel taint [ 1286.666087][ T6649] br1: port 3(veth2) entered disabled state [ 1286.729187][ T6650] veth2: left allmulticast mode [ 1286.729436][ T6650] veth2: left promiscuous mode [ 1286.729734][ T6650] br1: port 3(veth2) entered disabled state [ 1286.845649][ T6652] br1: port 2(veth1) entered disabled state [ 1286.900542][ T6653] veth1: left allmulticast mode [ 1286.900761][ T6653] veth1: left promiscuous mode [ 1286.901024][ T6653] br1: port 2(veth1) entered disabled state [ 1286.970411][ T6654] vx100: left allmulticast mode [ 1286.970689][ T6654] vx100: left promiscuous mode [ 1286.970990][ T6654] br1: port 1(vx100) entered disabled state