[ 1299.698868][ T7590] br1: port 1(vx1) entered blocking state [ 1299.699119][ T7590] br1: port 1(vx1) entered disabled state [ 1299.705872][ T7590] vx1: entered allmulticast mode [ 1299.708101][ T7590] vx1: entered promiscuous mode [ 1299.709796][ T7590] br1: port 1(vx1) entered blocking state [ 1299.710030][ T7590] br1: port 1(vx1) entered forwarding state [ 1299.782978][ T7591] br1: port 2(veth1) entered blocking state [ 1299.783262][ T7591] br1: port 2(veth1) entered disabled state [ 1299.783542][ T7591] veth1: entered allmulticast mode [ 1299.785956][ T7591] veth1: entered promiscuous mode [ 1299.891188][ T5123] br1: port 2(veth1) entered blocking state [ 1299.891507][ T5123] br1: port 2(veth1) entered forwarding state [ 1299.964132][ T7593] br1: port 3(veth2) entered blocking state [ 1299.964493][ T7593] br1: port 3(veth2) entered disabled state [ 1299.964802][ T7593] veth2: entered allmulticast mode [ 1299.966757][ T7593] veth2: entered promiscuous mode [ 1300.049025][ T5123] br1: port 3(veth2) entered blocking state [ 1300.049353][ T5123] br1: port 3(veth2) entered forwarding state [ 1303.188904][ T7646] br2: port 1(w1) entered blocking state [ 1303.189207][ T7646] br2: port 1(w1) entered disabled state [ 1303.190154][ T7646] w1: entered allmulticast mode [ 1303.192081][ T7646] w1: entered promiscuous mode [ 1303.663164][ T7652] br2: port 2(vx2) entered blocking state [ 1303.663419][ T7652] br2: port 2(vx2) entered disabled state [ 1303.663636][ T7652] vx2: entered allmulticast mode [ 1303.665524][ T7652] vx2: entered promiscuous mode [ 1303.666358][ T7652] br2: port 2(vx2) entered blocking state [ 1303.666581][ T7652] br2: port 2(vx2) entered forwarding state [ 1304.281848][ T4517] br2: port 1(w1) entered blocking state [ 1304.282081][ T4517] br2: port 1(w1) entered forwarding state [ 1305.931370][ T7683] br2: port 1(w1) entered blocking state [ 1305.931639][ T7683] br2: port 1(w1) entered disabled state [ 1305.931901][ T7683] w1: entered allmulticast mode [ 1305.933941][ T7683] w1: entered promiscuous mode [ 1306.473762][ T7689] br2: port 2(vx2) entered blocking state [ 1306.474010][ T7689] br2: port 2(vx2) entered disabled state [ 1306.474249][ T7689] vx2: entered allmulticast mode [ 1306.476193][ T7689] vx2: entered promiscuous mode [ 1306.477304][ T7689] br2: port 2(vx2) entered blocking state [ 1306.477511][ T7689] br2: port 2(vx2) entered forwarding state [ 1307.120386][ T5123] br2: port 1(w1) entered blocking state [ 1307.120642][ T5123] br2: port 1(w1) entered forwarding state [ 1318.986955][ T11] vx2: left allmulticast mode [ 1318.987833][ T11] vx2: left promiscuous mode [ 1318.988834][ T11] br2: port 2(vx2) entered disabled state [ 1318.993574][ T11] w1: left allmulticast mode [ 1318.993883][ T11] w1: left promiscuous mode [ 1318.994361][ T11] br2: port 1(w1) entered disabled state [ 1319.428559][ T11] vx2: left allmulticast mode [ 1319.428935][ T11] vx2: left promiscuous mode [ 1319.429502][ T11] br2: port 2(vx2) entered disabled state [ 1319.434065][ T11] w1: left allmulticast mode [ 1319.434437][ T11] w1: left promiscuous mode [ 1319.434957][ T11] br2: port 1(w1) entered disabled state [ 1319.667368][ T11] ================================================================== [ 1319.667612][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 1319.667799][ T11] Read of size 8 at addr ffff88800ec79a38 by task kworker/u16:0/11 [ 1319.667996][ T11] [ 1319.668060][ T11] CPU: 3 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 1319.668258][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1319.668442][ T11] Workqueue: netns cleanup_net [ 1319.668580][ T11] Call Trace: [ 1319.668690][ T11] [ 1319.668764][ T11] dump_stack_lvl+0x82/0xd0 [ 1319.668916][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 1319.669084][ T11] ? cleanup_net+0x932/0xa40 [ 1319.669210][ T11] print_report+0xb4/0x270 [ 1319.669334][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 1319.669470][ T11] kasan_report+0xbd/0xf0 [ 1319.669577][ T11] ? cleanup_net+0x932/0xa40 [ 1319.669705][ T11] cleanup_net+0x932/0xa40 [ 1319.669833][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 1319.669960][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 1319.670087][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 1319.670216][ T11] ? lock_acquire+0x32/0xc0 [ 1319.670340][ T11] ? process_one_work+0xe0b/0x16d0 [ 1319.670468][ T11] process_one_work+0xe55/0x16d0 [ 1319.670601][ T11] ? __pfx___lock_release+0x10/0x10 [ 1319.670727][ T11] ? __pfx_process_one_work+0x10/0x10 [ 1319.670850][ T11] ? assign_work+0x16c/0x240 [ 1319.670978][ T11] worker_thread+0x58c/0xce0 [ 1319.671115][ T11] ? __pfx_worker_thread+0x10/0x10 [ 1319.671238][ T11] kthread+0x28a/0x350 [ 1319.671332][ T11] ? __pfx_kthread+0x10/0x10 [ 1319.671455][ T11] ret_from_fork+0x31/0x70 [ 1319.671586][ T11] ? __pfx_kthread+0x10/0x10 [ 1319.671726][ T11] ret_from_fork_asm+0x1a/0x30 [ 1319.671854][ T11] [ 1319.671952][ T11] [ 1319.672017][ T11] Allocated by task 7663: [ 1319.672124][ T11] kasan_save_stack+0x24/0x50 [ 1319.672255][ T11] kasan_save_track+0x14/0x30 [ 1319.672381][ T11] __kasan_slab_alloc+0x59/0x70 [ 1319.672504][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 1319.672644][ T11] copy_net_ns+0xc6/0x340 [ 1319.672744][ T11] create_new_namespaces+0x35f/0x920 [ 1319.672870][ T11] unshare_nsproxy_namespaces+0x8d/0x130 [ 1319.672998][ T11] ksys_unshare+0x2a9/0x660 [ 1319.673127][ T11] __x64_sys_unshare+0x31/0x40 [ 1319.673254][ T11] do_syscall_64+0xc1/0x1d0 [ 1319.673380][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1319.673543][ T11] [ 1319.673618][ T11] Freed by task 11: [ 1319.673726][ T11] kasan_save_stack+0x24/0x50 [ 1319.673861][ T11] kasan_save_track+0x14/0x30 [ 1319.673986][ T11] kasan_save_free_info+0x3b/0x60 [ 1319.674117][ T11] __kasan_slab_free+0x38/0x50 [ 1319.674239][ T11] kmem_cache_free+0xf8/0x330 [ 1319.674360][ T11] cleanup_net+0x5a8/0xa40 [ 1319.674486][ T11] process_one_work+0xe55/0x16d0 [ 1319.674619][ T11] worker_thread+0x58c/0xce0 [ 1319.674744][ T11] kthread+0x28a/0x350 [ 1319.674844][ T11] ret_from_fork+0x31/0x70 [ 1319.674976][ T11] ret_from_fork_asm+0x1a/0x30 [ 1319.675118][ T11] [ 1319.675193][ T11] Last potentially related work creation: [ 1319.675331][ T11] kasan_save_stack+0x24/0x50 [ 1319.675469][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 1319.675613][ T11] insert_work+0x34/0x230 [ 1319.675711][ T11] __queue_work+0x5fd/0xa40 [ 1319.675838][ T11] queue_delayed_work_on+0x8c/0xa0 [ 1319.675961][ T11] __inet_insert_ifa+0x751/0xb10 [ 1319.676103][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 1319.676230][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 1319.676360][ T11] netlink_rcv_skb+0x130/0x360 [ 1319.676491][ T11] netlink_unicast+0x44b/0x710 [ 1319.676632][ T11] netlink_sendmsg+0x723/0xbe0 [ 1319.676772][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 1319.676901][ T11] ___sys_sendmsg+0xee/0x170 [ 1319.677026][ T11] __sys_sendmsg+0x109/0x1a0 [ 1319.677153][ T11] do_syscall_64+0xc1/0x1d0 [ 1319.677364][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1319.677531][ T11] [ 1319.677596][ T11] Second to last potentially related work creation: [ 1319.677762][ T11] kasan_save_stack+0x24/0x50 [ 1319.677894][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 1319.678019][ T11] insert_work+0x34/0x230 [ 1319.678111][ T11] __queue_work+0x5fd/0xa40 [ 1319.678232][ T11] queue_delayed_work_on+0x8c/0xa0 [ 1319.678355][ T11] __inet_insert_ifa+0x751/0xb10 [ 1319.678477][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 1319.678599][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 1319.678731][ T11] netlink_rcv_skb+0x130/0x360 [ 1319.678861][ T11] netlink_unicast+0x44b/0x710 [ 1319.678991][ T11] netlink_sendmsg+0x723/0xbe0 [ 1319.679120][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 1319.679244][ T11] ___sys_sendmsg+0xee/0x170 [ 1319.679370][ T11] __sys_sendmsg+0x109/0x1a0 [ 1319.679492][ T11] do_syscall_64+0xc1/0x1d0 [ 1319.679615][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1319.679771][ T11] [ 1319.679840][ T11] The buggy address belongs to the object at ffff88800ec79980 [ 1319.679840][ T11] which belongs to the cache net_namespace of size 6080 [ 1319.680172][ T11] The buggy address is located 184 bytes inside of [ 1319.680172][ T11] freed 6080-byte region [ffff88800ec79980, ffff88800ec7b140) [ 1319.680486][ T11] [ 1319.680552][ T11] The buggy address belongs to the physical page: [ 1319.680710][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800ec7b2c0 pfn:0xec78 [ 1319.680972][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 1319.681168][ T11] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 1319.681342][ T11] page_type: f5(slab) [ 1319.681451][ T11] raw: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 1319.681675][ T11] raw: ffff88800ec7b2c0 0000000000050002 00000001f5000000 0000000000000000 [ 1319.681898][ T11] head: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 1319.682124][ T11] head: ffff88800ec7b2c0 0000000000050002 00000001f5000000 0000000000000000 [ 1319.682344][ T11] head: 0080000000000003 ffffea00003b1e01 ffffffffffffffff 0000000000000000 [ 1319.682576][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 1319.682794][ T11] page dumped because: kasan: bad access detected [ 1319.682946][ T11] [ 1319.683010][ T11] Memory state around the buggy address: [ 1319.683132][ T11] ffff88800ec79900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 1319.683319][ T11] ffff88800ec79980: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1319.683506][ T11] >ffff88800ec79a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1319.683684][ T11] ^ [ 1319.683835][ T11] ffff88800ec79a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1319.684025][ T11] ffff88800ec79b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1319.684209][ T11] ================================================================== [ 1319.684425][ T11] Disabling lock debugging due to kernel taint [ 1321.309716][ T7806] vx1: left allmulticast mode [ 1321.310017][ T7806] vx1: left promiscuous mode [ 1321.310458][ T7806] br1: port 1(vx1) entered disabled state [ 1321.561590][ T7809] br1: port 3(veth2) entered disabled state [ 1321.624508][ T7810] veth2: left allmulticast mode [ 1321.624726][ T7810] veth2: left promiscuous mode [ 1321.625001][ T7810] br1: port 3(veth2) entered disabled state [ 1321.682272][ T7811] br1: port 2(veth1) entered disabled state [ 1321.743374][ T7812] veth1: left allmulticast mode [ 1321.743566][ T7812] veth1: left promiscuous mode [ 1321.743831][ T7812] br1: port 2(veth1) entered disabled state