[ 35.341012][ T774] eth1: renamed from tmp [ 36.024653][ T782] eth2: renamed from tmp [ 36.896350][ T793] l2tp_core: L2TP core driver, V2.0 [ 36.911023][ T793] l2tp_netlink: L2TP netlink interface [ 36.996627][ T794] l2tp_ip: L2TP IP encapsulation support (L2TPv3) [ 37.157491][ T798] l2tp_eth: L2TP ethernet pseudowire support (L2TPv3) [ 37.969959][ T808] l2tp_ip6: L2TP IP encapsulation support for IPv6 (L2TPv3) [ 39.497405][ T828] Initializing XFRM netlink socket [ 44.882432][ T67] ================================================================== [ 44.882675][ T67] BUG: KASAN: slab-use-after-free in cleanup_net+0xa5d/0xb90 [ 44.882882][ T67] Read of size 8 at addr ffff888009ed00f8 by task kworker/u16:1/67 [ 44.883078][ T67] [ 44.883152][ T67] CPU: 2 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.12.0-virtme #1 [ 44.883362][ T67] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 44.883536][ T67] Workqueue: netns cleanup_net [ 44.883682][ T67] Call Trace: [ 44.883786][ T67] [ 44.883859][ T67] dump_stack_lvl+0x82/0xd0 [ 44.884003][ T67] print_address_description.constprop.0+0x2c/0x3b0 [ 44.884172][ T67] ? cleanup_net+0xa5d/0xb90 [ 44.884309][ T67] print_report+0xb4/0x270 [ 44.884445][ T67] ? kasan_addr_to_slab+0x25/0x80 [ 44.884583][ T67] kasan_report+0xbd/0xf0 [ 44.884687][ T67] ? cleanup_net+0xa5d/0xb90 [ 44.884824][ T67] cleanup_net+0xa5d/0xb90 [ 44.884958][ T67] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 44.885095][ T67] ? __pfx_cleanup_net+0x10/0x10 [ 44.885228][ T67] ? trace_lock_acquire+0x148/0x1f0 [ 44.885366][ T67] ? lock_acquire+0x32/0xc0 [ 44.885501][ T67] ? process_one_work+0xe0b/0x16d0 [ 44.885642][ T67] process_one_work+0xe55/0x16d0 [ 44.885779][ T67] ? __pfx___lock_release+0x10/0x10 [ 44.885917][ T67] ? __pfx_process_one_work+0x10/0x10 [ 44.886058][ T67] ? assign_work+0x16c/0x240 [ 44.886193][ T67] worker_thread+0x58c/0xce0 [ 44.886327][ T67] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 44.886496][ T67] ? __pfx_worker_thread+0x10/0x10 [ 44.886637][ T67] ? __pfx_worker_thread+0x10/0x10 [ 44.886776][ T67] kthread+0x28a/0x350 [ 44.886885][ T67] ? __pfx_kthread+0x10/0x10 [ 44.887024][ T67] ret_from_fork+0x31/0x70 [ 44.887161][ T67] ? __pfx_kthread+0x10/0x10 [ 44.887296][ T67] ret_from_fork_asm+0x1a/0x30 [ 44.887437][ T67] [ 44.887545][ T67] [ 44.887619][ T67] Allocated by task 739: [ 44.887725][ T67] kasan_save_stack+0x24/0x50 [ 44.887861][ T67] kasan_save_track+0x14/0x30 [ 44.887993][ T67] __kasan_slab_alloc+0x59/0x70 [ 44.888125][ T67] kmem_cache_alloc_noprof+0x10b/0x350 [ 44.888265][ T67] copy_net_ns+0xc6/0x540 [ 44.888373][ T67] create_new_namespaces+0x35f/0x920 [ 44.888511][ T67] unshare_nsproxy_namespaces+0x8a/0x1b0 [ 44.888646][ T67] ksys_unshare+0x2c4/0x6e0 [ 44.888783][ T67] __x64_sys_unshare+0x31/0x40 [ 44.888917][ T67] do_syscall_64+0xc1/0x1d0 [ 44.889057][ T67] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 44.889235][ T67] [ 44.889306][ T67] Freed by task 67: [ 44.889413][ T67] kasan_save_stack+0x24/0x50 [ 44.889554][ T67] kasan_save_track+0x14/0x30 [ 44.889690][ T67] kasan_save_free_info+0x3b/0x60 [ 44.889835][ T67] __kasan_slab_free+0x38/0x50 [ 44.889977][ T67] kmem_cache_free+0xf8/0x330 [ 44.890114][ T67] cleanup_net+0x5a8/0xb90 [ 44.890254][ T67] process_one_work+0xe55/0x16d0 [ 44.890396][ T67] worker_thread+0x58c/0xce0 [ 44.890537][ T67] kthread+0x28a/0x350 [ 44.890642][ T67] ret_from_fork+0x31/0x70 [ 44.890781][ T67] ret_from_fork_asm+0x1a/0x30 [ 44.890931][ T67] [ 44.891008][ T67] Last potentially related work creation: [ 44.891151][ T67] kasan_save_stack+0x24/0x50 [ 44.891295][ T67] __kasan_record_aux_stack+0x8e/0xa0 [ 44.891449][ T67] insert_work+0x34/0x230 [ 44.891558][ T67] __queue_work+0x5fd/0xa40 [ 44.891697][ T67] queue_delayed_work_on+0x8c/0xa0 [ 44.891839][ T67] __inet_insert_ifa+0x751/0xb10 [ 44.891981][ T67] inet_rtm_newaddr+0x833/0xbd0 [ 44.892122][ T67] rtnetlink_rcv_msg+0x712/0xc10 [ 44.892260][ T67] netlink_rcv_skb+0x130/0x360 [ 44.892400][ T67] netlink_unicast+0x44b/0x710 [ 44.892541][ T67] netlink_sendmsg+0x723/0xbe0 [ 44.892680][ T67] ____sys_sendmsg+0x7ac/0xa10 [ 44.892817][ T67] ___sys_sendmsg+0xee/0x170 [ 44.892955][ T67] __sys_sendmsg+0x109/0x1a0 [ 44.893096][ T67] do_syscall_64+0xc1/0x1d0 [ 44.893240][ T67] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 44.893406][ T67] [ 44.893474][ T67] Second to last potentially related work creation: [ 44.893639][ T67] kasan_save_stack+0x24/0x50 [ 44.893785][ T67] __kasan_record_aux_stack+0x8e/0xa0 [ 44.893927][ T67] insert_work+0x34/0x230 [ 44.894033][ T67] __queue_work+0x5fd/0xa40 [ 44.894176][ T67] queue_delayed_work_on+0x8c/0xa0 [ 44.894317][ T67] __inet_insert_ifa+0x751/0xb10 [ 44.894460][ T67] inet_rtm_newaddr+0x833/0xbd0 [ 44.894602][ T67] rtnetlink_rcv_msg+0x712/0xc10 [ 44.894736][ T67] netlink_rcv_skb+0x130/0x360 [ 44.894874][ T67] netlink_unicast+0x44b/0x710 [ 44.895008][ T67] netlink_sendmsg+0x723/0xbe0 [ 44.895151][ T67] ____sys_sendmsg+0x7ac/0xa10 [ 44.895295][ T67] ___sys_sendmsg+0xee/0x170 [ 44.895437][ T67] __sys_sendmsg+0x109/0x1a0 [ 44.895573][ T67] do_syscall_64+0xc1/0x1d0 [ 44.895710][ T67] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 44.895881][ T67] [ 44.895954][ T67] The buggy address belongs to the object at ffff888009ed0040 [ 44.895954][ T67] which belongs to the cache net_namespace of size 6528 [ 44.896322][ T67] The buggy address is located 184 bytes inside of [ 44.896322][ T67] freed 6528-byte region [ffff888009ed0040, ffff888009ed19c0) [ 44.896661][ T67] [ 44.896729][ T67] The buggy address belongs to the physical page: [ 44.896892][ T67] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888009ed5140 pfn:0x9ed0 [ 44.897166][ T67] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 44.897372][ T67] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 44.897614][ T67] page_type: f5(slab) [ 44.897724][ T67] raw: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088 [ 44.898099][ T67] raw: ffff888009ed5140 0000000000040003 00000001f5000000 0000000000000000 [ 44.898346][ T67] head: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088 [ 44.898727][ T67] head: ffff888009ed5140 0000000000040003 00000001f5000000 0000000000000000 [ 44.898977][ T67] head: 0080000000000003 ffffea000027b401 ffffffffffffffff 0000000000000000 [ 44.899225][ T67] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 44.899466][ T67] page dumped because: kasan: bad access detected [ 44.899637][ T67] [ 44.899704][ T67] Memory state around the buggy address: [ 44.899899][ T67] ffff888009ecff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 44.900105][ T67] ffff888009ed0000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 44.900307][ T67] >ffff888009ed0080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 44.900512][ T67] ^ [ 44.900708][ T67] ffff888009ed0100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 44.900903][ T67] ffff888009ed0180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 44.901164][ T67] ================================================================== [ 44.901427][ T67] Disabling lock debugging due to kernel taint