[ 836.129440][ T4615] br1: port 1(vx10) entered blocking state [ 836.130698][ T4615] br1: port 1(vx10) entered disabled state [ 836.131145][ T4615] vx10: entered allmulticast mode [ 836.134411][ T4615] vx10: entered promiscuous mode [ 836.136308][ T4615] br1: port 1(vx10) entered blocking state [ 836.136711][ T4615] br1: port 1(vx10) entered forwarding state [ 836.498377][ T4620] br1: port 2(vx20) entered blocking state [ 836.498842][ T4620] br1: port 2(vx20) entered disabled state [ 836.499226][ T4620] vx20: entered allmulticast mode [ 836.501550][ T4620] vx20: entered promiscuous mode [ 836.502208][ T4620] br1: port 2(vx20) entered blocking state [ 836.502520][ T4620] br1: port 2(vx20) entered forwarding state [ 836.694045][ T4622] br1: port 3(veth1) entered blocking state [ 836.694414][ T4622] br1: port 3(veth1) entered disabled state [ 836.694757][ T4622] veth1: entered allmulticast mode [ 836.697214][ T4622] veth1: entered promiscuous mode [ 836.781596][ T39] br1: port 3(veth1) entered blocking state [ 836.782012][ T39] br1: port 3(veth1) entered forwarding state [ 837.162837][ T4627] br1: port 4(veth2) entered blocking state [ 837.163208][ T4627] br1: port 4(veth2) entered disabled state [ 837.163524][ T4627] veth2: entered allmulticast mode [ 837.165878][ T4627] veth2: entered promiscuous mode [ 837.248791][ T4607] br1: port 4(veth2) entered blocking state [ 837.249246][ T4607] br1: port 4(veth2) entered forwarding state [ 841.136490][ T4684] br2: port 1(w1) entered blocking state [ 841.136785][ T4684] br2: port 1(w1) entered disabled state [ 841.137043][ T4684] w1: entered allmulticast mode [ 841.139053][ T4684] w1: entered promiscuous mode [ 841.854375][ T4692] br2: port 2(vx10) entered blocking state [ 841.854759][ T4692] br2: port 2(vx10) entered disabled state [ 841.855083][ T4692] vx10: entered allmulticast mode [ 841.857161][ T4692] vx10: entered promiscuous mode [ 841.858019][ T4692] br2: port 2(vx10) entered blocking state [ 841.858319][ T4692] br2: port 2(vx10) entered forwarding state [ 842.515396][ T4699] br2: port 3(vx20) entered blocking state [ 842.515780][ T4699] br2: port 3(vx20) entered disabled state [ 842.516235][ T4699] vx20: entered allmulticast mode [ 842.518568][ T4699] vx20: entered promiscuous mode [ 842.519222][ T4699] br2: port 3(vx20) entered blocking state [ 842.519487][ T4699] br2: port 3(vx20) entered forwarding state [ 843.382114][ T2066] br2: port 1(w1) entered blocking state [ 843.382427][ T2066] br2: port 1(w1) entered forwarding state [ 845.852404][ T4741] br2: port 1(w1) entered blocking state [ 845.853763][ T4741] br2: port 1(w1) entered disabled state [ 845.854114][ T4741] w1: entered allmulticast mode [ 845.857886][ T4741] w1: entered promiscuous mode [ 846.551047][ T4749] br2: port 2(vx10) entered blocking state [ 846.551447][ T4749] br2: port 2(vx10) entered disabled state [ 846.551758][ T4749] vx10: entered allmulticast mode [ 846.555221][ T4749] vx10: entered promiscuous mode [ 846.555840][ T4749] br2: port 2(vx10) entered blocking state [ 846.556122][ T4749] br2: port 2(vx10) entered forwarding state [ 847.180543][ T4756] br2: port 3(vx20) entered blocking state [ 847.180868][ T4756] br2: port 3(vx20) entered disabled state [ 847.181169][ T4756] vx20: entered allmulticast mode [ 847.183211][ T4756] vx20: entered promiscuous mode [ 847.183760][ T4756] br2: port 3(vx20) entered blocking state [ 847.184108][ T4756] br2: port 3(vx20) entered forwarding state [ 847.873886][ T2066] br2: port 1(w1) entered blocking state [ 847.874185][ T2066] br2: port 1(w1) entered forwarding state [ 953.158767][ T11] vx20: left allmulticast mode [ 953.159353][ T11] vx20: left promiscuous mode [ 953.160227][ T11] br2: port 3(vx20) entered disabled state [ 953.164833][ T11] vx10: left allmulticast mode [ 953.165203][ T11] vx10: left promiscuous mode [ 953.165715][ T11] br2: port 2(vx10) entered disabled state [ 953.170773][ T11] w1: left allmulticast mode [ 953.171163][ T11] w1: left promiscuous mode [ 953.171703][ T11] br2: port 1(w1) entered disabled state [ 953.778184][ T11] vx20: left allmulticast mode [ 953.778529][ T11] vx20: left promiscuous mode [ 953.779035][ T11] br2: port 3(vx20) entered disabled state [ 953.782385][ T11] vx10: left allmulticast mode [ 953.782714][ T11] vx10: left promiscuous mode [ 953.783165][ T11] br2: port 2(vx10) entered disabled state [ 953.801141][ T11] w1: left allmulticast mode [ 953.801491][ T11] w1: left promiscuous mode [ 953.802027][ T11] br2: port 1(w1) entered disabled state [ 954.138638][ T11] ================================================================== [ 954.138931][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 954.139157][ T11] Read of size 8 at addr ffff888010041a38 by task kworker/u16:0/11 [ 954.139369][ T11] [ 954.139442][ T11] CPU: 3 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 954.139655][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 954.139873][ T11] Workqueue: netns cleanup_net [ 954.140037][ T11] Call Trace: [ 954.140142][ T11] [ 954.140216][ T11] dump_stack_lvl+0x82/0xd0 [ 954.140391][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 954.140577][ T11] ? cleanup_net+0x932/0xa40 [ 954.140721][ T11] print_report+0xb4/0x270 [ 954.140856][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 954.141050][ T11] kasan_report+0xbd/0xf0 [ 954.141158][ T11] ? cleanup_net+0x932/0xa40 [ 954.141293][ T11] cleanup_net+0x932/0xa40 [ 954.141426][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 954.141566][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 954.141745][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 954.141895][ T11] ? lock_acquire+0x32/0xc0 [ 954.142078][ T11] ? process_one_work+0xe0b/0x16d0 [ 954.142223][ T11] process_one_work+0xe55/0x16d0 [ 954.142364][ T11] ? __pfx___lock_release+0x10/0x10 [ 954.142496][ T11] ? __pfx_process_one_work+0x10/0x10 [ 954.142633][ T11] ? assign_work+0x16c/0x240 [ 954.142812][ T11] worker_thread+0x58c/0xce0 [ 954.142959][ T11] ? __pfx_worker_thread+0x10/0x10 [ 954.143160][ T11] kthread+0x28a/0x350 [ 954.143275][ T11] ? __pfx_kthread+0x10/0x10 [ 954.143407][ T11] ret_from_fork+0x31/0x70 [ 954.143538][ T11] ? __pfx_kthread+0x10/0x10 [ 954.143673][ T11] ret_from_fork_asm+0x1a/0x30 [ 954.143826][ T11] [ 954.143929][ T11] [ 954.144001][ T11] Allocated by task 4720: [ 954.144101][ T11] kasan_save_stack+0x24/0x50 [ 954.144242][ T11] kasan_save_track+0x14/0x30 [ 954.144377][ T11] __kasan_slab_alloc+0x59/0x70 [ 954.144510][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 954.144641][ T11] copy_net_ns+0xc6/0x340 [ 954.144748][ T11] create_new_namespaces+0x35f/0x920 [ 954.144884][ T11] unshare_nsproxy_namespaces+0x8d/0x130 [ 954.145014][ T11] ksys_unshare+0x2a9/0x660 [ 954.145150][ T11] __x64_sys_unshare+0x31/0x40 [ 954.145290][ T11] do_syscall_64+0xc1/0x1d0 [ 954.145429][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 954.145596][ T11] [ 954.145664][ T11] Freed by task 11: [ 954.145766][ T11] kasan_save_stack+0x24/0x50 [ 954.145902][ T11] kasan_save_track+0x14/0x30 [ 954.146034][ T11] kasan_save_free_info+0x3b/0x60 [ 954.146163][ T11] __kasan_slab_free+0x38/0x50 [ 954.146288][ T11] kmem_cache_free+0xf8/0x330 [ 954.146422][ T11] cleanup_net+0x5a8/0xa40 [ 954.146552][ T11] process_one_work+0xe55/0x16d0 [ 954.146686][ T11] worker_thread+0x58c/0xce0 [ 954.146818][ T11] kthread+0x28a/0x350 [ 954.146921][ T11] ret_from_fork+0x31/0x70 [ 954.147057][ T11] ret_from_fork_asm+0x1a/0x30 [ 954.147187][ T11] [ 954.147254][ T11] Last potentially related work creation: [ 954.147391][ T11] kasan_save_stack+0x24/0x50 [ 954.147537][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 954.147670][ T11] insert_work+0x34/0x230 [ 954.147770][ T11] __queue_work+0x5fd/0xa40 [ 954.147902][ T11] queue_delayed_work_on+0x8c/0xa0 [ 954.148040][ T11] __inet_insert_ifa+0x751/0xb10 [ 954.148185][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 954.148379][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 954.148588][ T11] netlink_rcv_skb+0x130/0x360 [ 954.148798][ T11] netlink_unicast+0x44b/0x710 [ 954.148956][ T11] netlink_sendmsg+0x723/0xbe0 [ 954.149098][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 954.149238][ T11] ___sys_sendmsg+0xee/0x170 [ 954.149416][ T11] __sys_sendmsg+0x109/0x1a0 [ 954.149555][ T11] do_syscall_64+0xc1/0x1d0 [ 954.149725][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 954.149942][ T11] [ 954.150027][ T11] Second to last potentially related work creation: [ 954.150189][ T11] kasan_save_stack+0x24/0x50 [ 954.150323][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 954.150450][ T11] insert_work+0x34/0x230 [ 954.150552][ T11] __queue_work+0x5fd/0xa40 [ 954.150678][ T11] queue_delayed_work_on+0x8c/0xa0 [ 954.150810][ T11] __inet_insert_ifa+0x751/0xb10 [ 954.150938][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 954.151068][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 954.151209][ T11] netlink_rcv_skb+0x130/0x360 [ 954.151349][ T11] netlink_unicast+0x44b/0x710 [ 954.151478][ T11] netlink_sendmsg+0x723/0xbe0 [ 954.151611][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 954.151746][ T11] ___sys_sendmsg+0xee/0x170 [ 954.151883][ T11] __sys_sendmsg+0x109/0x1a0 [ 954.152018][ T11] do_syscall_64+0xc1/0x1d0 [ 954.152152][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 954.152314][ T11] [ 954.152379][ T11] The buggy address belongs to the object at ffff888010041980 [ 954.152379][ T11] which belongs to the cache net_namespace of size 6080 [ 954.152718][ T11] The buggy address is located 184 bytes inside of [ 954.152718][ T11] freed 6080-byte region [ffff888010041980, ffff888010043140) [ 954.153032][ T11] [ 954.153098][ T11] The buggy address belongs to the physical page: [ 954.153258][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880100432c0 pfn:0x10040 [ 954.153519][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 954.153720][ T11] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 954.153888][ T11] page_type: f5(slab) [ 954.153990][ T11] raw: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 954.154229][ T11] raw: ffff8880100432c0 0000000000050002 00000001f5000000 0000000000000000 [ 954.154460][ T11] head: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 954.154700][ T11] head: ffff8880100432c0 0000000000050002 00000001f5000000 0000000000000000 [ 954.154925][ T11] head: 0080000000000003 ffffea0000401001 ffffffffffffffff 0000000000000000 [ 954.155147][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 954.155440][ T11] page dumped because: kasan: bad access detected [ 954.155604][ T11] [ 954.155669][ T11] Memory state around the buggy address: [ 954.155792][ T11] ffff888010041900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 954.156106][ T11] ffff888010041980: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 954.156290][ T11] >ffff888010041a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 954.156487][ T11] ^ [ 954.156651][ T11] ffff888010041a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 954.156828][ T11] ffff888010041b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 954.157014][ T11] ================================================================== [ 954.157283][ T11] Disabling lock debugging due to kernel taint [ 955.799664][ T5048] br1: port 4(veth2) entered disabled state [ 955.861390][ T5049] veth2: left allmulticast mode [ 955.861650][ T5049] veth2: left promiscuous mode [ 955.861963][ T5049] br1: port 4(veth2) entered disabled state [ 956.144522][ T5053] br1: port 3(veth1) entered disabled state [ 956.211479][ T5054] veth1: left allmulticast mode [ 956.212243][ T5054] veth1: left promiscuous mode [ 956.212544][ T5054] br1: port 3(veth1) entered disabled state [ 956.371979][ T5056] vx20: left allmulticast mode [ 956.372192][ T5056] vx20: left promiscuous mode [ 956.372465][ T5056] br1: port 2(vx20) entered disabled state [ 956.651600][ T5060] vx10: left allmulticast mode [ 956.651832][ T5060] vx10: left promiscuous mode [ 956.652130][ T5060] br1: port 1(vx10) entered disabled state