[ 1228.568871][ T8728] br1: port 1(vx10) entered blocking state [ 1228.569166][ T8728] br1: port 1(vx10) entered disabled state [ 1228.569727][ T8728] vx10: entered allmulticast mode [ 1228.571675][ T8728] vx10: entered promiscuous mode [ 1228.572483][ T8728] br1: port 1(vx10) entered blocking state [ 1228.572734][ T8728] br1: port 1(vx10) entered forwarding state [ 1228.915416][ T8733] br1: port 2(vx20) entered blocking state [ 1228.915739][ T8733] br1: port 2(vx20) entered disabled state [ 1228.916022][ T8733] vx20: entered allmulticast mode [ 1228.918601][ T8733] vx20: entered promiscuous mode [ 1228.919186][ T8733] br1: port 2(vx20) entered blocking state [ 1228.919442][ T8733] br1: port 2(vx20) entered forwarding state [ 1229.141938][ T8735] br1: port 3(veth1) entered blocking state [ 1229.142228][ T8735] br1: port 3(veth1) entered disabled state [ 1229.142524][ T8735] veth1: entered allmulticast mode [ 1229.144604][ T8735] veth1: entered promiscuous mode [ 1229.240048][ T45] br1: port 3(veth1) entered blocking state [ 1229.240387][ T45] br1: port 3(veth1) entered forwarding state [ 1229.528295][ T8739] br1: port 4(veth2) entered blocking state [ 1229.529031][ T8739] br1: port 4(veth2) entered disabled state [ 1229.529522][ T8739] veth2: entered allmulticast mode [ 1229.532797][ T8739] veth2: entered promiscuous mode [ 1229.635969][ T40] br1: port 4(veth2) entered blocking state [ 1229.636267][ T40] br1: port 4(veth2) entered forwarding state [ 1233.561595][ T8796] br2: port 1(w1) entered blocking state [ 1233.561886][ T8796] br2: port 1(w1) entered disabled state [ 1233.562148][ T8796] w1: entered allmulticast mode [ 1233.564482][ T8796] w1: entered promiscuous mode [ 1234.249117][ T8804] br2: port 2(vx10) entered blocking state [ 1234.249484][ T8804] br2: port 2(vx10) entered disabled state [ 1234.249770][ T8804] vx10: entered allmulticast mode [ 1234.251901][ T8804] vx10: entered promiscuous mode [ 1234.252553][ T8804] br2: port 2(vx10) entered blocking state [ 1234.252816][ T8804] br2: port 2(vx10) entered forwarding state [ 1234.900945][ T8811] br2: port 3(vx20) entered blocking state [ 1234.901337][ T8811] br2: port 3(vx20) entered disabled state [ 1234.901738][ T8811] vx20: entered allmulticast mode [ 1234.903962][ T8811] vx20: entered promiscuous mode [ 1234.904548][ T8811] br2: port 3(vx20) entered blocking state [ 1234.904809][ T8811] br2: port 3(vx20) entered forwarding state [ 1235.664675][ T40] br2: port 1(w1) entered blocking state [ 1235.665013][ T40] br2: port 1(w1) entered forwarding state [ 1237.972043][ T8852] br2: port 1(w1) entered blocking state [ 1237.972320][ T8852] br2: port 1(w1) entered disabled state [ 1237.973398][ T8852] w1: entered allmulticast mode [ 1237.975538][ T8852] w1: entered promiscuous mode [ 1238.708872][ T8860] br2: port 2(vx10) entered blocking state [ 1238.709197][ T8860] br2: port 2(vx10) entered disabled state [ 1238.709508][ T8860] vx10: entered allmulticast mode [ 1238.711843][ T8860] vx10: entered promiscuous mode [ 1238.712487][ T8860] br2: port 2(vx10) entered blocking state [ 1238.712752][ T8860] br2: port 2(vx10) entered forwarding state [ 1239.342487][ T8867] br2: port 3(vx20) entered blocking state [ 1239.342812][ T8867] br2: port 3(vx20) entered disabled state [ 1239.343138][ T8867] vx20: entered allmulticast mode [ 1239.345417][ T8867] vx20: entered promiscuous mode [ 1239.345986][ T8867] br2: port 3(vx20) entered blocking state [ 1239.346266][ T8867] br2: port 3(vx20) entered forwarding state [ 1240.150468][ T40] br2: port 1(w1) entered blocking state [ 1240.150747][ T40] br2: port 1(w1) entered forwarding state [ 1256.421592][ T11] vx20: left allmulticast mode [ 1256.422202][ T11] vx20: left promiscuous mode [ 1256.422826][ T11] br2: port 3(vx20) entered disabled state [ 1256.425577][ T11] vx10: left allmulticast mode [ 1256.425832][ T11] vx10: left promiscuous mode [ 1256.426414][ T11] br2: port 2(vx10) entered disabled state [ 1256.428871][ T11] w1: left allmulticast mode [ 1256.429136][ T11] w1: left promiscuous mode [ 1256.429586][ T11] br2: port 1(w1) entered disabled state [ 1257.154974][ T11] vx20: left allmulticast mode [ 1257.155394][ T11] vx20: left promiscuous mode [ 1257.155940][ T11] br2: port 3(vx20) entered disabled state [ 1257.160091][ T11] vx10: left allmulticast mode [ 1257.160460][ T11] vx10: left promiscuous mode [ 1257.160978][ T11] br2: port 2(vx10) entered disabled state [ 1257.164294][ T11] w1: left allmulticast mode [ 1257.164600][ T11] w1: left promiscuous mode [ 1257.164983][ T11] br2: port 1(w1) entered disabled state [ 1257.591590][ T11] ================================================================== [ 1257.591859][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 1257.592081][ T11] Read of size 8 at addr ffff8880130b9a38 by task kworker/u16:0/11 [ 1257.592284][ T11] [ 1257.592361][ T11] CPU: 1 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 1257.592608][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1257.592790][ T11] Workqueue: netns cleanup_net [ 1257.592946][ T11] Call Trace: [ 1257.593065][ T11] [ 1257.593150][ T11] dump_stack_lvl+0x82/0xd0 [ 1257.593305][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 1257.593498][ T11] ? cleanup_net+0x932/0xa40 [ 1257.593637][ T11] print_report+0xb4/0x270 [ 1257.593776][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 1257.593918][ T11] kasan_report+0xbd/0xf0 [ 1257.594025][ T11] ? cleanup_net+0x932/0xa40 [ 1257.594186][ T11] cleanup_net+0x932/0xa40 [ 1257.594343][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 1257.594486][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 1257.594631][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 1257.594789][ T11] ? lock_acquire+0x32/0xc0 [ 1257.594958][ T11] ? process_one_work+0xe0b/0x16d0 [ 1257.595103][ T11] process_one_work+0xe55/0x16d0 [ 1257.595256][ T11] ? __pfx___lock_release+0x10/0x10 [ 1257.595410][ T11] ? __pfx_process_one_work+0x10/0x10 [ 1257.595574][ T11] ? assign_work+0x16c/0x240 [ 1257.595723][ T11] worker_thread+0x58c/0xce0 [ 1257.595879][ T11] ? __pfx_worker_thread+0x10/0x10 [ 1257.596024][ T11] kthread+0x28a/0x350 [ 1257.596138][ T11] ? __pfx_kthread+0x10/0x10 [ 1257.596312][ T11] ret_from_fork+0x31/0x70 [ 1257.596473][ T11] ? __pfx_kthread+0x10/0x10 [ 1257.596614][ T11] ret_from_fork_asm+0x1a/0x30 [ 1257.596760][ T11] [ 1257.596869][ T11] [ 1257.596951][ T11] Allocated by task 8831: [ 1257.597062][ T11] kasan_save_stack+0x24/0x50 [ 1257.597212][ T11] kasan_save_track+0x14/0x30 [ 1257.597375][ T11] __kasan_slab_alloc+0x59/0x70 [ 1257.597533][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 1257.597671][ T11] copy_net_ns+0xc6/0x340 [ 1257.597776][ T11] create_new_namespaces+0x35f/0x920 [ 1257.597927][ T11] unshare_nsproxy_namespaces+0x8d/0x130 [ 1257.598094][ T11] ksys_unshare+0x2a9/0x660 [ 1257.598261][ T11] __x64_sys_unshare+0x31/0x40 [ 1257.598404][ T11] do_syscall_64+0xc1/0x1d0 [ 1257.598546][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1257.598721][ T11] [ 1257.598812][ T11] Freed by task 11: [ 1257.598927][ T11] kasan_save_stack+0x24/0x50 [ 1257.599069][ T11] kasan_save_track+0x14/0x30 [ 1257.599210][ T11] kasan_save_free_info+0x3b/0x60 [ 1257.599348][ T11] __kasan_slab_free+0x38/0x50 [ 1257.599489][ T11] kmem_cache_free+0xf8/0x330 [ 1257.599648][ T11] cleanup_net+0x5a8/0xa40 [ 1257.599806][ T11] process_one_work+0xe55/0x16d0 [ 1257.599951][ T11] worker_thread+0x58c/0xce0 [ 1257.600090][ T11] kthread+0x28a/0x350 [ 1257.600195][ T11] ret_from_fork+0x31/0x70 [ 1257.600332][ T11] ret_from_fork_asm+0x1a/0x30 [ 1257.600469][ T11] [ 1257.600556][ T11] Last potentially related work creation: [ 1257.600702][ T11] kasan_save_stack+0x24/0x50 [ 1257.600844][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 1257.600999][ T11] insert_work+0x34/0x230 [ 1257.601120][ T11] __queue_work+0x5fd/0xa40 [ 1257.601276][ T11] queue_delayed_work_on+0x8c/0xa0 [ 1257.601430][ T11] __inet_insert_ifa+0x751/0xb10 [ 1257.601567][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 1257.601714][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 1257.601863][ T11] netlink_rcv_skb+0x130/0x360 [ 1257.602022][ T11] netlink_unicast+0x44b/0x710 [ 1257.602184][ T11] netlink_sendmsg+0x723/0xbe0 [ 1257.602351][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 1257.602521][ T11] ___sys_sendmsg+0xee/0x170 [ 1257.602668][ T11] __sys_sendmsg+0x109/0x1a0 [ 1257.602811][ T11] do_syscall_64+0xc1/0x1d0 [ 1257.602979][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1257.603170][ T11] [ 1257.603258][ T11] Second to last potentially related work creation: [ 1257.603435][ T11] kasan_save_stack+0x24/0x50 [ 1257.603587][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 1257.603731][ T11] insert_work+0x34/0x230 [ 1257.603841][ T11] __queue_work+0x5fd/0xa40 [ 1257.603992][ T11] queue_delayed_work_on+0x8c/0xa0 [ 1257.604138][ T11] __inet_insert_ifa+0x751/0xb10 [ 1257.604281][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 1257.604433][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 1257.604579][ T11] netlink_rcv_skb+0x130/0x360 [ 1257.604719][ T11] netlink_unicast+0x44b/0x710 [ 1257.604888][ T11] netlink_sendmsg+0x723/0xbe0 [ 1257.605033][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 1257.605176][ T11] ___sys_sendmsg+0xee/0x170 [ 1257.605328][ T11] __sys_sendmsg+0x109/0x1a0 [ 1257.605470][ T11] do_syscall_64+0xc1/0x1d0 [ 1257.605608][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1257.605782][ T11] [ 1257.605851][ T11] The buggy address belongs to the object at ffff8880130b9980 [ 1257.605851][ T11] which belongs to the cache net_namespace of size 6080 [ 1257.606222][ T11] The buggy address is located 184 bytes inside of [ 1257.606222][ T11] freed 6080-byte region [ffff8880130b9980, ffff8880130bb140) [ 1257.606553][ T11] [ 1257.606623][ T11] The buggy address belongs to the physical page: [ 1257.606795][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880130bb2c0 pfn:0x130b8 [ 1257.607077][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 1257.607295][ T11] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 1257.607552][ T11] page_type: f5(slab) [ 1257.607721][ T11] raw: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 1257.608104][ T11] raw: ffff8880130bb2c0 0000000000050002 00000001f5000000 0000000000000000 [ 1257.608481][ T11] head: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 1257.608864][ T11] head: ffff8880130bb2c0 0000000000050002 00000001f5000000 0000000000000000 [ 1257.609214][ T11] head: 0080000000000003 ffffea00004c2e01 ffffffffffffffff 0000000000000000 [ 1257.609569][ T11] head: ffff888000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 1257.609936][ T11] page dumped because: kasan: bad access detected [ 1257.610212][ T11] [ 1257.610323][ T11] Memory state around the buggy address: [ 1257.610532][ T11] ffff8880130b9900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 1257.610815][ T11] ffff8880130b9980: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1257.611103][ T11] >ffff8880130b9a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1257.611404][ T11] ^ [ 1257.611649][ T11] ffff8880130b9a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1257.611943][ T11] ffff8880130b9b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1257.612226][ T11] ================================================================== [ 1257.612619][ T11] Disabling lock debugging due to kernel taint [ 1259.161689][ T9007] br1: port 4(veth2) entered disabled state [ 1259.251398][ T9008] veth2: left allmulticast mode [ 1259.251619][ T9008] veth2: left promiscuous mode [ 1259.251895][ T9008] br1: port 4(veth2) entered disabled state [ 1259.432702][ T9011] br1: port 3(veth1) entered disabled state [ 1259.493343][ T9012] veth1: left allmulticast mode [ 1259.493599][ T9012] veth1: left promiscuous mode [ 1259.493878][ T9012] br1: port 3(veth1) entered disabled state [ 1259.622656][ T9014] vx20: left allmulticast mode [ 1259.622879][ T9014] vx20: left promiscuous mode [ 1259.623202][ T9014] br1: port 2(vx20) entered disabled state [ 1259.915906][ T9018] vx10: left allmulticast mode [ 1259.916119][ T9018] vx10: left promiscuous mode [ 1259.916391][ T9018] br1: port 1(vx10) entered disabled state