[ 13.702681][ T292] eth1: renamed from tmp [ 14.406369][ T300] eth2: renamed from tmp [ 15.297112][ T311] l2tp_core: L2TP core driver, V2.0 [ 15.309653][ T311] l2tp_netlink: L2TP netlink interface [ 15.406546][ T313] l2tp_ip: L2TP IP encapsulation support (L2TPv3) [ 15.561930][ T317] l2tp_eth: L2TP ethernet pseudowire support (L2TPv3) [ 16.386371][ T327] l2tp_ip6: L2TP IP encapsulation support for IPv6 (L2TPv3) [ 17.939247][ T347] Initializing XFRM netlink socket [ 23.399759][ T66] ================================================================== [ 23.400032][ T66] BUG: KASAN: slab-use-after-free in cleanup_net+0xa5d/0xb90 [ 23.400277][ T66] Read of size 8 at addr ffff8880097b80f8 by task kworker/u16:1/66 [ 23.400508][ T66] [ 23.400590][ T66] CPU: 1 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.12.0-virtme #1 [ 23.400829][ T66] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 23.401032][ T66] Workqueue: netns cleanup_net [ 23.401198][ T66] Call Trace: [ 23.401318][ T66] [ 23.401400][ T66] dump_stack_lvl+0x82/0xd0 [ 23.401570][ T66] print_address_description.constprop.0+0x2c/0x3b0 [ 23.401770][ T66] ? cleanup_net+0xa5d/0xb90 [ 23.401930][ T66] print_report+0xb4/0x270 [ 23.402088][ T66] ? kasan_addr_to_slab+0x25/0x80 [ 23.402247][ T66] kasan_report+0xbd/0xf0 [ 23.402369][ T66] ? cleanup_net+0xa5d/0xb90 [ 23.402530][ T66] cleanup_net+0xa5d/0xb90 [ 23.402690][ T66] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 23.402849][ T66] ? __pfx_cleanup_net+0x10/0x10 [ 23.403007][ T66] ? trace_lock_acquire+0x148/0x1f0 [ 23.403166][ T66] ? lock_acquire+0x32/0xc0 [ 23.403322][ T66] ? process_one_work+0xe0b/0x16d0 [ 23.403480][ T66] process_one_work+0xe55/0x16d0 [ 23.403639][ T66] ? __pfx___lock_release+0x10/0x10 [ 23.403798][ T66] ? __pfx_process_one_work+0x10/0x10 [ 23.403962][ T66] ? assign_work+0x16c/0x240 [ 23.404120][ T66] worker_thread+0x58c/0xce0 [ 23.404278][ T66] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 23.404475][ T66] ? __pfx_worker_thread+0x10/0x10 [ 23.404635][ T66] ? __pfx_worker_thread+0x10/0x10 [ 23.404796][ T66] kthread+0x28a/0x350 [ 23.404917][ T66] ? __pfx_kthread+0x10/0x10 [ 23.405077][ T66] ret_from_fork+0x31/0x70 [ 23.405236][ T66] ? __pfx_kthread+0x10/0x10 [ 23.405395][ T66] ret_from_fork_asm+0x1a/0x30 [ 23.405567][ T66] [ 23.405685][ T66] [ 23.405766][ T66] Allocated by task 257: [ 23.405883][ T66] kasan_save_stack+0x24/0x50 [ 23.406045][ T66] kasan_save_track+0x14/0x30 [ 23.406201][ T66] __kasan_slab_alloc+0x59/0x70 [ 23.406356][ T66] kmem_cache_alloc_noprof+0x10b/0x350 [ 23.406515][ T66] copy_net_ns+0xc6/0x540 [ 23.406633][ T66] create_new_namespaces+0x35f/0x920 [ 23.406795][ T66] unshare_nsproxy_namespaces+0x8a/0x1b0 [ 23.406953][ T66] ksys_unshare+0x2c4/0x6e0 [ 23.407112][ T66] __x64_sys_unshare+0x31/0x40 [ 23.407273][ T66] do_syscall_64+0xc1/0x1d0 [ 23.407435][ T66] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 23.407636][ T66] [ 23.407721][ T66] Freed by task 66: [ 23.407840][ T66] kasan_save_stack+0x24/0x50 [ 23.407996][ T66] kasan_save_track+0x14/0x30 [ 23.408152][ T66] kasan_save_free_info+0x3b/0x60 [ 23.408309][ T66] __kasan_slab_free+0x38/0x50 [ 23.408466][ T66] kmem_cache_free+0xf8/0x330 [ 23.408621][ T66] cleanup_net+0x5a8/0xb90 [ 23.408775][ T66] process_one_work+0xe55/0x16d0 [ 23.408927][ T66] worker_thread+0x58c/0xce0 [ 23.409086][ T66] kthread+0x28a/0x350 [ 23.409204][ T66] ret_from_fork+0x31/0x70 [ 23.409356][ T66] ret_from_fork_asm+0x1a/0x30 [ 23.409509][ T66] [ 23.409589][ T66] Last potentially related work creation: [ 23.409750][ T66] kasan_save_stack+0x24/0x50 [ 23.409909][ T66] __kasan_record_aux_stack+0x8e/0xa0 [ 23.410066][ T66] insert_work+0x34/0x230 [ 23.410188][ T66] __queue_work+0x5fd/0xa40 [ 23.410344][ T66] queue_delayed_work_on+0x8c/0xa0 [ 23.410500][ T66] __inet_insert_ifa+0x751/0xb10 [ 23.410659][ T66] inet_rtm_newaddr+0x833/0xbd0 [ 23.410815][ T66] rtnetlink_rcv_msg+0x712/0xc10 [ 23.410971][ T66] netlink_rcv_skb+0x130/0x360 [ 23.411131][ T66] netlink_unicast+0x44b/0x710 [ 23.411288][ T66] netlink_sendmsg+0x723/0xbe0 [ 23.411449][ T66] ____sys_sendmsg+0x7ac/0xa10 [ 23.411607][ T66] ___sys_sendmsg+0xee/0x170 [ 23.411764][ T66] __sys_sendmsg+0x109/0x1a0 [ 23.411931][ T66] do_syscall_64+0xc1/0x1d0 [ 23.412088][ T66] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 23.412282][ T66] [ 23.412362][ T66] Second to last potentially related work creation: [ 23.412560][ T66] kasan_save_stack+0x24/0x50 [ 23.412721][ T66] __kasan_record_aux_stack+0x8e/0xa0 [ 23.412877][ T66] insert_work+0x34/0x230 [ 23.412997][ T66] __queue_work+0x5fd/0xa40 [ 23.413152][ T66] queue_delayed_work_on+0x8c/0xa0 [ 23.413308][ T66] __inet_insert_ifa+0x751/0xb10 [ 23.413464][ T66] inet_rtm_newaddr+0x833/0xbd0 [ 23.413622][ T66] rtnetlink_rcv_msg+0x712/0xc10 [ 23.413780][ T66] netlink_rcv_skb+0x130/0x360 [ 23.413934][ T66] netlink_unicast+0x44b/0x710 [ 23.414089][ T66] netlink_sendmsg+0x723/0xbe0 [ 23.414246][ T66] ____sys_sendmsg+0x7ac/0xa10 [ 23.414402][ T66] ___sys_sendmsg+0xee/0x170 [ 23.414558][ T66] __sys_sendmsg+0x109/0x1a0 [ 23.414714][ T66] do_syscall_64+0xc1/0x1d0 [ 23.414871][ T66] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 23.415069][ T66] [ 23.415148][ T66] The buggy address belongs to the object at ffff8880097b8040 [ 23.415148][ T66] which belongs to the cache net_namespace of size 6528 [ 23.415565][ T66] The buggy address is located 184 bytes inside of [ 23.415565][ T66] freed 6528-byte region [ffff8880097b8040, ffff8880097b99c0) [ 23.415937][ T66] [ 23.416017][ T66] The buggy address belongs to the physical page: [ 23.416208][ T66] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880097bd140 pfn:0x97b8 [ 23.416515][ T66] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 23.416760][ T66] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 23.416956][ T66] page_type: f5(slab) [ 23.417080][ T66] raw: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088 [ 23.417352][ T66] raw: ffff8880097bd140 0000000000040003 00000001f5000000 0000000000000000 [ 23.417626][ T66] head: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088 [ 23.417901][ T66] head: ffff8880097bd140 0000000000040003 00000001f5000000 0000000000000000 [ 23.418178][ T66] head: 0080000000000003 ffffea000025ee01 ffffffffffffffff 0000000000000000 [ 23.418456][ T66] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 23.418730][ T66] page dumped because: kasan: bad access detected [ 23.418920][ T66] [ 23.419003][ T66] Memory state around the buggy address: [ 23.419156][ T66] ffff8880097b7f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.419389][ T66] ffff8880097b8000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 23.419616][ T66] >ffff8880097b8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.419853][ T66] ^ [ 23.420079][ T66] ffff8880097b8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.420306][ T66] ffff8880097b8180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.420533][ T66] ================================================================== [ 23.421046][ T66] Disabling lock debugging due to kernel taint