[ 352.324219][ T2365] br1: port 1(vx1) entered blocking state [ 352.324521][ T2365] br1: port 1(vx1) entered disabled state [ 352.325503][ T2365] vx1: entered allmulticast mode [ 352.327615][ T2365] vx1: entered promiscuous mode [ 352.336456][ T2365] br1: port 1(vx1) entered blocking state [ 352.336770][ T2365] br1: port 1(vx1) entered forwarding state [ 352.423448][ T2366] br1: port 2(veth1) entered blocking state [ 352.424448][ T2366] br1: port 2(veth1) entered disabled state [ 352.424759][ T2366] veth1: entered allmulticast mode [ 352.426800][ T2366] veth1: entered promiscuous mode [ 352.524261][ T39] br1: port 2(veth1) entered blocking state [ 352.524566][ T39] br1: port 2(veth1) entered forwarding state [ 352.711682][ T2369] br1: port 3(veth2) entered blocking state [ 352.712020][ T2369] br1: port 3(veth2) entered disabled state [ 352.712338][ T2369] veth2: entered allmulticast mode [ 352.714886][ T2369] veth2: entered promiscuous mode [ 352.793116][ T45] br1: port 3(veth2) entered blocking state [ 352.793407][ T45] br1: port 3(veth2) entered forwarding state [ 356.405046][ T2422] br2: port 1(w1) entered blocking state [ 356.405299][ T2422] br2: port 1(w1) entered disabled state [ 356.405630][ T2422] w1: entered allmulticast mode [ 356.407868][ T2422] w1: entered promiscuous mode [ 356.974999][ T2428] br2: port 2(vx2) entered blocking state [ 356.975382][ T2428] br2: port 2(vx2) entered disabled state [ 356.975712][ T2428] vx2: entered allmulticast mode [ 356.978803][ T2428] vx2: entered promiscuous mode [ 356.980137][ T2428] br2: port 2(vx2) entered blocking state [ 356.980470][ T2428] br2: port 2(vx2) entered forwarding state [ 357.688313][ T45] br2: port 1(w1) entered blocking state [ 357.688605][ T45] br2: port 1(w1) entered forwarding state [ 359.592276][ T2462] br2: port 1(w1) entered blocking state [ 359.592528][ T2462] br2: port 1(w1) entered disabled state [ 359.592798][ T2462] w1: entered allmulticast mode [ 359.594803][ T2462] w1: entered promiscuous mode [ 360.119748][ T2468] br2: port 2(vx2) entered blocking state [ 360.120046][ T2468] br2: port 2(vx2) entered disabled state [ 360.120328][ T2468] vx2: entered allmulticast mode [ 360.122510][ T2468] vx2: entered promiscuous mode [ 360.123458][ T2468] br2: port 2(vx2) entered blocking state [ 360.123734][ T2468] br2: port 2(vx2) entered forwarding state [ 360.810372][ T39] br2: port 1(w1) entered blocking state [ 360.810700][ T39] br2: port 1(w1) entered forwarding state [ 417.650442][ T68] vx2: left allmulticast mode [ 417.651408][ T68] vx2: left promiscuous mode [ 417.651796][ T68] br2: port 2(vx2) entered disabled state [ 417.655198][ T68] w1: left allmulticast mode [ 417.655414][ T68] w1: left promiscuous mode [ 417.656328][ T68] br2: port 1(w1) entered disabled state [ 418.124423][ T68] vx2: left allmulticast mode [ 418.124995][ T68] vx2: left promiscuous mode [ 418.125570][ T68] br2: port 2(vx2) entered disabled state [ 418.130206][ T68] w1: left allmulticast mode [ 418.130791][ T68] w1: left promiscuous mode [ 418.131464][ T68] br2: port 1(w1) entered disabled state [ 418.359146][ T68] ================================================================== [ 418.359391][ T68] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 418.359631][ T68] Read of size 8 at addr ffff88800ee09a38 by task kworker/u16:1/68 [ 418.359847][ T68] [ 418.359920][ T68] CPU: 3 UID: 0 PID: 68 Comm: kworker/u16:1 Not tainted 6.12.0-virtme #1 [ 418.360127][ T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 418.360300][ T68] Workqueue: netns cleanup_net [ 418.360446][ T68] Call Trace: [ 418.360555][ T68] [ 418.360627][ T68] dump_stack_lvl+0x82/0xd0 [ 418.360773][ T68] print_address_description.constprop.0+0x2c/0x3b0 [ 418.360956][ T68] ? cleanup_net+0x932/0xa40 [ 418.361098][ T68] print_report+0xb4/0x270 [ 418.361237][ T68] ? kasan_addr_to_slab+0x25/0x80 [ 418.361374][ T68] kasan_report+0xbd/0xf0 [ 418.361480][ T68] ? cleanup_net+0x932/0xa40 [ 418.361620][ T68] cleanup_net+0x932/0xa40 [ 418.361760][ T68] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 418.361907][ T68] ? __pfx_cleanup_net+0x10/0x10 [ 418.362044][ T68] ? trace_lock_acquire+0x148/0x1f0 [ 418.362183][ T68] ? lock_acquire+0x32/0xc0 [ 418.362322][ T68] ? process_one_work+0xe0b/0x16d0 [ 418.362461][ T68] process_one_work+0xe55/0x16d0 [ 418.362600][ T68] ? __pfx___lock_release+0x10/0x10 [ 418.362740][ T68] ? __pfx_process_one_work+0x10/0x10 [ 418.362886][ T68] ? assign_work+0x16c/0x240 [ 418.363025][ T68] worker_thread+0x58c/0xce0 [ 418.363165][ T68] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 418.363372][ T68] ? __pfx_worker_thread+0x10/0x10 [ 418.363512][ T68] ? __pfx_worker_thread+0x10/0x10 [ 418.363649][ T68] kthread+0x28a/0x350 [ 418.363756][ T68] ? __pfx_kthread+0x10/0x10 [ 418.363898][ T68] ret_from_fork+0x31/0x70 [ 418.364042][ T68] ? __pfx_kthread+0x10/0x10 [ 418.364180][ T68] ret_from_fork_asm+0x1a/0x30 [ 418.364323][ T68] [ 418.364431][ T68] [ 418.364503][ T68] Allocated by task 2441: [ 418.364609][ T68] kasan_save_stack+0x24/0x50 [ 418.364753][ T68] kasan_save_track+0x14/0x30 [ 418.364889][ T68] __kasan_slab_alloc+0x59/0x70 [ 418.365029][ T68] kmem_cache_alloc_noprof+0x10b/0x350 [ 418.365179][ T68] copy_net_ns+0xc6/0x340 [ 418.365283][ T68] create_new_namespaces+0x35f/0x920 [ 418.365421][ T68] unshare_nsproxy_namespaces+0x8d/0x130 [ 418.365574][ T68] ksys_unshare+0x2a9/0x660 [ 418.365717][ T68] __x64_sys_unshare+0x31/0x40 [ 418.365854][ T68] do_syscall_64+0xc1/0x1d0 [ 418.365995][ T68] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 418.366173][ T68] [ 418.366246][ T68] Freed by task 68: [ 418.366365][ T68] kasan_save_stack+0x24/0x50 [ 418.366504][ T68] kasan_save_track+0x14/0x30 [ 418.366641][ T68] kasan_save_free_info+0x3b/0x60 [ 418.366819][ T68] __kasan_slab_free+0x38/0x50 [ 418.367010][ T68] kmem_cache_free+0xf8/0x330 [ 418.367202][ T68] cleanup_net+0x5a8/0xa40 [ 418.367398][ T68] process_one_work+0xe55/0x16d0 [ 418.367596][ T68] worker_thread+0x58c/0xce0 [ 418.367781][ T68] kthread+0x28a/0x350 [ 418.367925][ T68] ret_from_fork+0x31/0x70 [ 418.368125][ T68] ret_from_fork_asm+0x1a/0x30 [ 418.368317][ T68] [ 418.368423][ T68] Last potentially related work creation: [ 418.368635][ T68] kasan_save_stack+0x24/0x50 [ 418.368846][ T68] __kasan_record_aux_stack+0x8e/0xa0 [ 418.369064][ T68] insert_work+0x34/0x230 [ 418.369224][ T68] __queue_work+0x5fd/0xa40 [ 418.369427][ T68] queue_delayed_work_on+0x8c/0xa0 [ 418.369622][ T68] __inet_insert_ifa+0x751/0xb10 [ 418.369830][ T68] inet_rtm_newaddr+0x833/0xbd0 [ 418.370039][ T68] rtnetlink_rcv_msg+0x712/0xc10 [ 418.370253][ T68] netlink_rcv_skb+0x130/0x360 [ 418.370473][ T68] netlink_unicast+0x44b/0x710 [ 418.370681][ T68] netlink_sendmsg+0x723/0xbe0 [ 418.370889][ T68] ____sys_sendmsg+0x7ac/0xa10 [ 418.371104][ T68] ___sys_sendmsg+0xee/0x170 [ 418.371313][ T68] __sys_sendmsg+0x109/0x1a0 [ 418.371521][ T68] do_syscall_64+0xc1/0x1d0 [ 418.371733][ T68] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 418.371995][ T68] [ 418.372107][ T68] The buggy address belongs to the object at ffff88800ee09980 [ 418.372107][ T68] which belongs to the cache net_namespace of size 6080 [ 418.372653][ T68] The buggy address is located 184 bytes inside of [ 418.372653][ T68] freed 6080-byte region [ffff88800ee09980, ffff88800ee0b140) [ 418.373129][ T68] [ 418.373227][ T68] The buggy address belongs to the physical page: [ 418.373470][ T68] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800ee0b2c0 pfn:0xee08 [ 418.373769][ T68] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 418.373981][ T68] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 418.374158][ T68] page_type: f5(slab) [ 418.374269][ T68] raw: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 418.374533][ T68] raw: ffff88800ee0b2c0 0000000000050002 00000001f5000000 0000000000000000 [ 418.374785][ T68] head: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 418.375025][ T68] head: ffff88800ee0b2c0 0000000000050002 00000001f5000000 0000000000000000 [ 418.375266][ T68] head: 0080000000000003 ffffea00003b8201 ffffffffffffffff 0000000000000000 [ 418.375530][ T68] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 418.375783][ T68] page dumped because: kasan: bad access detected [ 418.375954][ T68] [ 418.376029][ T68] Memory state around the buggy address: [ 418.376167][ T68] ffff88800ee09900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 418.376367][ T68] ffff88800ee09980: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 418.376583][ T68] >ffff88800ee09a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 418.376815][ T68] ^ [ 418.376972][ T68] ffff88800ee09a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 418.377163][ T68] ffff88800ee09b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 418.377361][ T68] ================================================================== [ 418.377678][ T68] Disabling lock debugging due to kernel taint [ 419.795786][ T2661] br1: port 3(veth2) entered disabled state [ 419.869950][ T2662] veth2: left allmulticast mode [ 419.870157][ T2662] veth2: left promiscuous mode [ 419.870434][ T2662] br1: port 3(veth2) entered disabled state [ 420.020060][ T2664] br1: port 2(veth1) entered disabled state [ 420.091083][ T2665] veth1: left allmulticast mode [ 420.091321][ T2665] veth1: left promiscuous mode [ 420.091615][ T2665] br1: port 2(veth1) entered disabled state [ 420.170029][ T2666] vx1: left allmulticast mode [ 420.170244][ T2666] vx1: left promiscuous mode [ 420.170525][ T2666] br1: port 1(vx1) entered disabled state