[ 55.514331][ T1009] u32 classifier [ 55.514517][ T1009] input device check on [ 55.514678][ T1009] Actions configured [ 56.625287][ T1028] gre: GRE over IPv4 demultiplexor driver [ 56.637474][ T1028] ip_gre: GRE over IPv4 tunneling driver [ 59.519614][ T1090] ip6_gre: GRE over IPv6 tunneling driver [ 59.729752][ T54] ip6_tunnel: ip6gretap00 xmit: Local address not yet configured! [ 59.806785][ T66] ip6_tunnel: ip6gretap00 xmit: Local address not yet configured! [ 60.237522][ T66] ================================================================== [ 60.237782][ T66] BUG: KASAN: slab-use-after-free in cleanup_net+0xa5d/0xb90 [ 60.237998][ T66] Read of size 8 at addr ffff88800d3600f8 by task kworker/u16:1/66 [ 60.238208][ T66] [ 60.238284][ T66] CPU: 2 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.12.0-virtme #1 [ 60.238499][ T66] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 60.238675][ T66] Workqueue: netns cleanup_net [ 60.238821][ T66] Call Trace: [ 60.238935][ T66] [ 60.239013][ T66] dump_stack_lvl+0x82/0xd0 [ 60.239163][ T66] print_address_description.constprop.0+0x2c/0x3b0 [ 60.239342][ T66] ? cleanup_net+0xa5d/0xb90 [ 60.239491][ T66] print_report+0xb4/0x270 [ 60.239636][ T66] ? kasan_addr_to_slab+0x25/0x80 [ 60.239785][ T66] kasan_report+0xbd/0xf0 [ 60.239892][ T66] ? cleanup_net+0xa5d/0xb90 [ 60.240031][ T66] cleanup_net+0xa5d/0xb90 [ 60.240174][ T66] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 60.240324][ T66] ? __pfx_cleanup_net+0x10/0x10 [ 60.240465][ T66] ? trace_lock_acquire+0x148/0x1f0 [ 60.240609][ T66] ? lock_acquire+0x32/0xc0 [ 60.240750][ T66] ? process_one_work+0xe0b/0x16d0 [ 60.240895][ T66] process_one_work+0xe55/0x16d0 [ 60.241041][ T66] ? __pfx___lock_release+0x10/0x10 [ 60.241186][ T66] ? __pfx_process_one_work+0x10/0x10 [ 60.241330][ T66] ? assign_work+0x16c/0x240 [ 60.241475][ T66] worker_thread+0x58c/0xce0 [ 60.241626][ T66] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 60.241807][ T66] ? __pfx_worker_thread+0x10/0x10 [ 60.241947][ T66] ? __pfx_worker_thread+0x10/0x10 [ 60.242087][ T66] kthread+0x28a/0x350 [ 60.242199][ T66] ? __pfx_kthread+0x10/0x10 [ 60.242342][ T66] ret_from_fork+0x31/0x70 [ 60.242479][ T66] ? __pfx_kthread+0x10/0x10 [ 60.242621][ T66] ret_from_fork_asm+0x1a/0x30 [ 60.242775][ T66] [ 60.242886][ T66] [ 60.242957][ T66] Allocated by task 1060: [ 60.243061][ T66] kasan_save_stack+0x24/0x50 [ 60.243207][ T66] kasan_save_track+0x14/0x30 [ 60.243352][ T66] __kasan_slab_alloc+0x59/0x70 [ 60.243488][ T66] kmem_cache_alloc_noprof+0x10b/0x350 [ 60.243634][ T66] copy_net_ns+0xc6/0x540 [ 60.243744][ T66] create_new_namespaces+0x35f/0x920 [ 60.243884][ T66] unshare_nsproxy_namespaces+0x8a/0x1b0 [ 60.244032][ T66] ksys_unshare+0x2c4/0x6e0 [ 60.244172][ T66] __x64_sys_unshare+0x31/0x40 [ 60.244308][ T66] do_syscall_64+0xc1/0x1d0 [ 60.244449][ T66] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 60.244623][ T66] [ 60.244692][ T66] Freed by task 66: [ 60.244798][ T66] kasan_save_stack+0x24/0x50 [ 60.244946][ T66] kasan_save_track+0x14/0x30 [ 60.245086][ T66] kasan_save_free_info+0x3b/0x60 [ 60.245222][ T66] __kasan_slab_free+0x38/0x50 [ 60.245363][ T66] kmem_cache_free+0xf8/0x330 [ 60.245509][ T66] cleanup_net+0x5a8/0xb90 [ 60.245655][ T66] process_one_work+0xe55/0x16d0 [ 60.245790][ T66] worker_thread+0x58c/0xce0 [ 60.245933][ T66] kthread+0x28a/0x350 [ 60.246041][ T66] ret_from_fork+0x31/0x70 [ 60.246181][ T66] ret_from_fork_asm+0x1a/0x30 [ 60.246317][ T66] [ 60.246385][ T66] Last potentially related work creation: [ 60.246529][ T66] kasan_save_stack+0x24/0x50 [ 60.246671][ T66] __kasan_record_aux_stack+0x8e/0xa0 [ 60.246811][ T66] insert_work+0x34/0x230 [ 60.246920][ T66] __queue_work+0x5fd/0xa40 [ 60.247057][ T66] queue_delayed_work_on+0x8c/0xa0 [ 60.247195][ T66] __inet_insert_ifa+0x751/0xb10 [ 60.247334][ T66] inet_rtm_newaddr+0x833/0xbd0 [ 60.247473][ T66] rtnetlink_rcv_msg+0x712/0xc10 [ 60.247614][ T66] netlink_rcv_skb+0x130/0x360 [ 60.247753][ T66] netlink_unicast+0x44b/0x710 [ 60.247894][ T66] netlink_sendmsg+0x723/0xbe0 [ 60.248039][ T66] ____sys_sendmsg+0x7ac/0xa10 [ 60.248183][ T66] ___sys_sendmsg+0xee/0x170 [ 60.248325][ T66] __sys_sendmsg+0x109/0x1a0 [ 60.248461][ T66] do_syscall_64+0xc1/0x1d0 [ 60.248600][ T66] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 60.248768][ T66] [ 60.248839][ T66] Second to last potentially related work creation: [ 60.249007][ T66] kasan_save_stack+0x24/0x50 [ 60.249146][ T66] __kasan_record_aux_stack+0x8e/0xa0 [ 60.249282][ T66] insert_work+0x34/0x230 [ 60.249385][ T66] __queue_work+0x5fd/0xa40 [ 60.249521][ T66] queue_delayed_work_on+0x8c/0xa0 [ 60.249658][ T66] __inet_insert_ifa+0x751/0xb10 [ 60.249792][ T66] inetdev_event+0xb18/0xcf0 [ 60.249929][ T66] notifier_call_chain+0xcd/0x150 [ 60.250071][ T66] __dev_notify_flags+0xe6/0x250 [ 60.250210][ T66] dev_change_flags+0xec/0x160 [ 60.250347][ T66] do_setlink.constprop.0+0x79d/0x2300 [ 60.250482][ T66] rtnl_newlink+0x6de/0xa80 [ 60.250618][ T66] rtnetlink_rcv_msg+0x712/0xc10 [ 60.250752][ T66] netlink_rcv_skb+0x130/0x360 [ 60.250887][ T66] netlink_unicast+0x44b/0x710 [ 60.251022][ T66] netlink_sendmsg+0x723/0xbe0 [ 60.251158][ T66] ____sys_sendmsg+0x7ac/0xa10 [ 60.251294][ T66] ___sys_sendmsg+0xee/0x170 [ 60.251431][ T66] __sys_sendmsg+0x109/0x1a0 [ 60.251566][ T66] do_syscall_64+0xc1/0x1d0 [ 60.251706][ T66] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 60.251874][ T66] [ 60.251944][ T66] The buggy address belongs to the object at ffff88800d360040 [ 60.251944][ T66] which belongs to the cache net_namespace of size 6528 [ 60.252303][ T66] The buggy address is located 184 bytes inside of [ 60.252303][ T66] freed 6528-byte region [ffff88800d360040, ffff88800d3619c0) [ 60.252632][ T66] [ 60.252701][ T66] The buggy address belongs to the physical page: [ 60.252864][ T66] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800d363640 pfn:0xd360 [ 60.253137][ T66] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 60.253345][ T66] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 60.253519][ T66] page_type: f5(slab) [ 60.253626][ T66] raw: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088 [ 60.253868][ T66] raw: ffff88800d363640 0000000000040002 00000001f5000000 0000000000000000 [ 60.254103][ T66] head: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088 [ 60.254349][ T66] head: ffff88800d363640 0000000000040002 00000001f5000000 0000000000000000 [ 60.254586][ T66] head: 0080000000000003 ffffea000034d801 ffffffffffffffff 0000000000000000 [ 60.254828][ T66] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 60.255065][ T66] page dumped because: kasan: bad access detected [ 60.255234][ T66] [ 60.255302][ T66] Memory state around the buggy address: [ 60.255436][ T66] ffff88800d35ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 60.255638][ T66] ffff88800d360000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 60.255831][ T66] >ffff88800d360080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 60.256027][ T66] ^ [ 60.256222][ T66] ffff88800d360100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 60.256414][ T66] ffff88800d360180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 60.256607][ T66] ================================================================== [ 60.256906][ T66] Disabling lock debugging due to kernel taint [ 62.006555][ T9] ip6_tunnel: ip6erspan00 xmit: Local address not yet configured! [ 62.289563][ T60] ip6_tunnel: ip6erspan00 xmit: Local address not yet configured! [ 62.739057][ T1169] test-br0: port 1(test-dummy0) entered blocking state [ 62.739310][ T1169] test-br0: port 1(test-dummy0) entered disabled state [ 62.745210][ T1169] test-dummy0: entered allmulticast mode [ 62.746262][ T1169] test-dummy0: entered promiscuous mode [ 62.802892][ T1172] test-br0: port 1(test-dummy0) entered blocking state [ 62.803102][ T1172] test-br0: port 1(test-dummy0) entered forwarding state [ 64.064253][ T1207] test-dummy0: left allmulticast mode [ 64.065287][ T1207] test-dummy0: left promiscuous mode [ 64.065730][ T1207] test-br0: port 1(test-dummy0) entered disabled state [ 122.181437][ T3434] MACsec IEEE 802.1AE [ 122.891393][ T3456] Initializing XFRM netlink socket [ 124.900906][ T3346] netdevsim netdevsim0 eni0np1: renamed from eth0 [ 127.778072][ T3574] test-br0: port 1(vxlan10) entered blocking state [ 127.778296][ T3574] test-br0: port 1(vxlan10) entered disabled state [ 127.778994][ T3574] vxlan10: entered allmulticast mode [ 127.779909][ T3574] vxlan10: entered promiscuous mode [ 128.155301][ T66] vxlan10: left allmulticast mode [ 128.155650][ T66] vxlan10: left promiscuous mode [ 128.155897][ T66] test-br0: port 1(vxlan10) entered disabled state [ 128.779832][ T3604] test-br0: port 1(dummy1) entered blocking state [ 128.780279][ T3604] test-br0: port 1(dummy1) entered disabled state [ 128.780515][ T3604] dummy1: entered allmulticast mode [ 128.781415][ T3604] dummy1: entered promiscuous mode [ 129.155730][ T66] dummy1: left allmulticast mode [ 129.155949][ T66] dummy1: left promiscuous mode [ 129.156256][ T66] test-br0: port 1(dummy1) entered disabled state [ 130.136876][ T3346] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 130.187125][ T3354] netdevsim netdevsim20 eni20np1: renamed from eth1 [ 130.675048][ T3665] test-bond0: (slave eni10np1): Enslaving as a backup interface with an up link [ 130.739203][ T3667] test-bond0: (slave eni20np1): Enslaving as a backup interface with an up link [ 130.884257][ T3676] test-br0: port 1(test-bond0) entered blocking state [ 130.884953][ T3676] test-br0: port 1(test-bond0) entered disabled state [ 130.885189][ T3676] test-bond0: entered allmulticast mode [ 130.885370][ T3676] netdevsim netdevsim10 eni10np1: entered allmulticast mode [ 130.885624][ T3676] netdevsim netdevsim20 eni20np1: entered allmulticast mode [ 130.886951][ T3676] test-bond0: entered promiscuous mode [ 130.887129][ T3676] netdevsim netdevsim10 eni10np1: entered promiscuous mode [ 130.887503][ T3676] netdevsim netdevsim20 eni20np1: entered promiscuous mode [ 130.960028][ T3680] test-bond0: left allmulticast mode [ 130.960238][ T3680] netdevsim netdevsim10 eni10np1: left allmulticast mode [ 130.960455][ T3680] netdevsim netdevsim20 eni20np1: left allmulticast mode [ 130.960649][ T3680] test-bond0: left promiscuous mode [ 130.960810][ T3680] netdevsim netdevsim10 eni10np1: left promiscuous mode [ 130.961142][ T3680] netdevsim netdevsim20 eni20np1: left promiscuous mode [ 130.961570][ T3680] test-br0: port 1(test-bond0) entered disabled state [ 131.050681][ T3681] test-bond0 (unregistering): (slave eni10np1): Releasing backup interface [ 131.069675][ T3681] test-bond0 (unregistering): (slave eni20np1): Releasing backup interface [ 131.093068][ T3681] test-bond0 (unregistering): Released all slaves [ 133.888898][ T3760] bond123: (slave test-dummy0): Enslaving as an active interface with an up link [ 133.965134][ T66] bond123 (unregistering): (slave test-dummy0): Releasing backup interface [ 133.977542][ T66] bond123 (unregistering): Released all slaves