[ 13.724141][ T292] eth1: renamed from tmp [ 14.392592][ T300] eth2: renamed from tmp [ 15.300800][ T311] l2tp_core: L2TP core driver, V2.0 [ 15.312336][ T311] l2tp_netlink: L2TP netlink interface [ 15.393766][ T312] l2tp_ip: L2TP IP encapsulation support (L2TPv3) [ 15.551120][ T316] l2tp_eth: L2TP ethernet pseudowire support (L2TPv3) [ 16.378261][ T326] l2tp_ip6: L2TP IP encapsulation support for IPv6 (L2TPv3) [ 16.715108][ T330] ip (330) used greatest stack depth: 24096 bytes left [ 17.873733][ T346] Initializing XFRM netlink socket [ 23.260304][ T64] ================================================================== [ 23.260557][ T64] BUG: KASAN: slab-use-after-free in cleanup_net+0xa5d/0xb90 [ 23.260784][ T64] Read of size 8 at addr ffff888004fe80f8 by task kworker/u16:1/64 [ 23.260997][ T64] [ 23.261076][ T64] CPU: 1 UID: 0 PID: 64 Comm: kworker/u16:1 Not tainted 6.12.0-virtme #1 [ 23.261294][ T64] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 23.261478][ T64] Workqueue: netns cleanup_net [ 23.261635][ T64] Call Trace: [ 23.261747][ T64] [ 23.261827][ T64] dump_stack_lvl+0x82/0xd0 [ 23.261980][ T64] print_address_description.constprop.0+0x2c/0x3b0 [ 23.262162][ T64] ? cleanup_net+0xa5d/0xb90 [ 23.262312][ T64] print_report+0xb4/0x270 [ 23.262451][ T64] ? kasan_addr_to_slab+0x25/0x80 [ 23.262590][ T64] kasan_report+0xbd/0xf0 [ 23.262698][ T64] ? cleanup_net+0xa5d/0xb90 [ 23.262840][ T64] cleanup_net+0xa5d/0xb90 [ 23.262983][ T64] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 23.263124][ T64] ? __pfx_cleanup_net+0x10/0x10 [ 23.263262][ T64] ? trace_lock_acquire+0x148/0x1f0 [ 23.263404][ T64] ? lock_acquire+0x32/0xc0 [ 23.263548][ T64] ? process_one_work+0xe0b/0x16d0 [ 23.263693][ T64] process_one_work+0xe55/0x16d0 [ 23.263837][ T64] ? __pfx___lock_release+0x10/0x10 [ 23.263980][ T64] ? __pfx_process_one_work+0x10/0x10 [ 23.264123][ T64] ? assign_work+0x16c/0x240 [ 23.264264][ T64] worker_thread+0x58c/0xce0 [ 23.264407][ T64] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 23.264586][ T64] ? __pfx_worker_thread+0x10/0x10 [ 23.264730][ T64] ? __pfx_worker_thread+0x10/0x10 [ 23.264872][ T64] kthread+0x28a/0x350 [ 23.264980][ T64] ? __pfx_kthread+0x10/0x10 [ 23.265121][ T64] ret_from_fork+0x31/0x70 [ 23.265263][ T64] ? __pfx_kthread+0x10/0x10 [ 23.265405][ T64] ret_from_fork_asm+0x1a/0x30 [ 23.265553][ T64] [ 23.265662][ T64] [ 23.265735][ T64] Allocated by task 257: [ 23.265846][ T64] kasan_save_stack+0x24/0x50 [ 23.265989][ T64] kasan_save_track+0x14/0x30 [ 23.266127][ T64] __kasan_slab_alloc+0x59/0x70 [ 23.266265][ T64] kmem_cache_alloc_noprof+0x10b/0x350 [ 23.266411][ T64] copy_net_ns+0xc6/0x540 [ 23.266517][ T64] create_new_namespaces+0x35f/0x920 [ 23.266660][ T64] unshare_nsproxy_namespaces+0x8a/0x1b0 [ 23.266802][ T64] ksys_unshare+0x2c4/0x6e0 [ 23.266948][ T64] __x64_sys_unshare+0x31/0x40 [ 23.267092][ T64] do_syscall_64+0xc1/0x1d0 [ 23.267244][ T64] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 23.267419][ T64] [ 23.267494][ T64] Freed by task 64: [ 23.267598][ T64] kasan_save_stack+0x24/0x50 [ 23.267737][ T64] kasan_save_track+0x14/0x30 [ 23.267876][ T64] kasan_save_free_info+0x3b/0x60 [ 23.268018][ T64] __kasan_slab_free+0x38/0x50 [ 23.268156][ T64] kmem_cache_free+0xf8/0x330 [ 23.268296][ T64] cleanup_net+0x5a8/0xb90 [ 23.268438][ T64] process_one_work+0xe55/0x16d0 [ 23.268593][ T64] worker_thread+0x58c/0xce0 [ 23.268731][ T64] kthread+0x28a/0x350 [ 23.268835][ T64] ret_from_fork+0x31/0x70 [ 23.268974][ T64] ret_from_fork_asm+0x1a/0x30 [ 23.269117][ T64] [ 23.269190][ T64] Last potentially related work creation: [ 23.269328][ T64] kasan_save_stack+0x24/0x50 [ 23.269473][ T64] __kasan_record_aux_stack+0x8e/0xa0 [ 23.269615][ T64] insert_work+0x34/0x230 [ 23.269725][ T64] __queue_work+0x5fd/0xa40 [ 23.269866][ T64] queue_delayed_work_on+0x8c/0xa0 [ 23.270007][ T64] __inet_insert_ifa+0x751/0xb10 [ 23.270152][ T64] inet_rtm_newaddr+0x833/0xbd0 [ 23.270296][ T64] rtnetlink_rcv_msg+0x712/0xc10 [ 23.270437][ T64] netlink_rcv_skb+0x130/0x360 [ 23.270587][ T64] netlink_unicast+0x44b/0x710 [ 23.270727][ T64] netlink_sendmsg+0x723/0xbe0 [ 23.270870][ T64] ____sys_sendmsg+0x7ac/0xa10 [ 23.271012][ T64] ___sys_sendmsg+0xee/0x170 [ 23.271154][ T64] __sys_sendmsg+0x109/0x1a0 [ 23.271296][ T64] do_syscall_64+0xc1/0x1d0 [ 23.271438][ T64] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 23.271616][ T64] [ 23.271693][ T64] Second to last potentially related work creation: [ 23.271866][ T64] kasan_save_stack+0x24/0x50 [ 23.272008][ T64] __kasan_record_aux_stack+0x8e/0xa0 [ 23.272148][ T64] insert_work+0x34/0x230 [ 23.272256][ T64] __queue_work+0x5fd/0xa40 [ 23.272394][ T64] queue_delayed_work_on+0x8c/0xa0 [ 23.272585][ T64] __inet_insert_ifa+0x751/0xb10 [ 23.272804][ T64] inet_rtm_newaddr+0x833/0xbd0 [ 23.273017][ T64] rtnetlink_rcv_msg+0x712/0xc10 [ 23.273229][ T64] netlink_rcv_skb+0x130/0x360 [ 23.273441][ T64] netlink_unicast+0x44b/0x710 [ 23.273651][ T64] netlink_sendmsg+0x723/0xbe0 [ 23.273864][ T64] ____sys_sendmsg+0x7ac/0xa10 [ 23.274019][ T64] ___sys_sendmsg+0xee/0x170 [ 23.274161][ T64] __sys_sendmsg+0x109/0x1a0 [ 23.274305][ T64] do_syscall_64+0xc1/0x1d0 [ 23.274449][ T64] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 23.274627][ T64] [ 23.274699][ T64] The buggy address belongs to the object at ffff888004fe8040 [ 23.274699][ T64] which belongs to the cache net_namespace of size 6528 [ 23.275072][ T64] The buggy address is located 184 bytes inside of [ 23.275072][ T64] freed 6528-byte region [ffff888004fe8040, ffff888004fe99c0) [ 23.275409][ T64] [ 23.275481][ T64] The buggy address belongs to the physical page: [ 23.275651][ T64] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888004fed140 pfn:0x4fe8 [ 23.275934][ T64] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 23.276141][ T64] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 23.276328][ T64] page_type: f5(slab) [ 23.276440][ T64] raw: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088 [ 23.276686][ T64] raw: ffff888004fed140 0000000000040003 00000001f5000000 0000000000000000 [ 23.277002][ T64] head: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088 [ 23.277249][ T64] head: ffff888004fed140 0000000000040003 00000001f5000000 0000000000000000 [ 23.277501][ T64] head: 0080000000000003 ffffea000013fa01 ffffffffffffffff 0000000000000000 [ 23.277747][ T64] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 23.278058][ T64] page dumped because: kasan: bad access detected [ 23.278232][ T64] [ 23.278304][ T64] Memory state around the buggy address: [ 23.278445][ T64] ffff888004fe7f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 23.278715][ T64] ffff888004fe8000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 23.278918][ T64] >ffff888004fe8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.279122][ T64] ^ [ 23.279391][ T64] ffff888004fe8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.279592][ T64] ffff888004fe8180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.279855][ T64] ================================================================== [ 23.280130][ T64] Disabling lock debugging due to kernel taint