[ 25.068502][ T394] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this. [ 25.085925][ T394] Bridge firewalling registered [ 25.299821][ T397] ip (397) used greatest stack depth: 23344 bytes left [ 25.740988][ T403] 8021q: 802.1Q VLAN Support v1.8 [ 26.502703][ T411] br0: port 1(vtep-host) entered blocking state [ 26.503173][ T411] br0: port 1(vtep-host) entered disabled state [ 26.504477][ T411] vtep-host: entered allmulticast mode [ 26.506450][ T411] vtep-host: entered promiscuous mode [ 27.187793][ T418] br0: port 2(vxd) entered blocking state [ 27.188095][ T418] br0: port 2(vxd) entered disabled state [ 27.188586][ T418] vxd: entered allmulticast mode [ 27.190538][ T418] vxd: entered promiscuous mode [ 28.197527][ T429] br0: port 2(vxd) entered blocking state [ 28.197889][ T429] br0: port 2(vxd) entered forwarding state [ 28.328824][ T39] br0: port 1(vtep-host) entered blocking state [ 28.329384][ T39] br0: port 1(vtep-host) entered forwarding state [ 31.398968][ T67] vxd: left allmulticast mode [ 31.399442][ T67] vxd: left promiscuous mode [ 31.400014][ T67] br0: port 2(vxd) entered disabled state [ 31.402593][ T67] vtep-host: left allmulticast mode [ 31.402803][ T67] vtep-host: left promiscuous mode [ 31.403146][ T67] br0: port 1(vtep-host) entered disabled state [ 31.686884][ T67] ================================================================== [ 31.687107][ T67] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 31.687300][ T67] Read of size 8 at addr ffff888004e000f8 by task kworker/u16:1/67 [ 31.687480][ T67] [ 31.687546][ T67] CPU: 0 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.12.0-virtme #1 [ 31.687736][ T67] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 31.687889][ T67] Workqueue: netns cleanup_net [ 31.688022][ T67] Call Trace: [ 31.688122][ T67] [ 31.688187][ T67] dump_stack_lvl+0x82/0xd0 [ 31.688319][ T67] print_address_description.constprop.0+0x2c/0x3b0 [ 31.688476][ T67] ? cleanup_net+0x932/0xa40 [ 31.688603][ T67] print_report+0xb4/0x270 [ 31.688729][ T67] ? kasan_addr_to_slab+0x25/0x80 [ 31.688850][ T67] kasan_report+0xbd/0xf0 [ 31.688946][ T67] ? cleanup_net+0x932/0xa40 [ 31.689073][ T67] cleanup_net+0x932/0xa40 [ 31.689211][ T67] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 31.689341][ T67] ? __pfx_cleanup_net+0x10/0x10 [ 31.689468][ T67] ? trace_lock_acquire+0x148/0x1f0 [ 31.689592][ T67] ? lock_acquire+0x32/0xc0 [ 31.689714][ T67] ? process_one_work+0xe0b/0x16d0 [ 31.689841][ T67] process_one_work+0xe55/0x16d0 [ 31.689969][ T67] ? __pfx___lock_release+0x10/0x10 [ 31.690095][ T67] ? __pfx_process_one_work+0x10/0x10 [ 31.690223][ T67] ? assign_work+0x16c/0x240 [ 31.690349][ T67] worker_thread+0x58c/0xce0 [ 31.690471][ T67] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 31.690632][ T67] ? __pfx_worker_thread+0x10/0x10 [ 31.690755][ T67] ? __pfx_worker_thread+0x10/0x10 [ 31.690877][ T67] kthread+0x28a/0x350 [ 31.690973][ T67] ? __pfx_kthread+0x10/0x10 [ 31.691096][ T67] ret_from_fork+0x31/0x70 [ 31.691217][ T67] ? __pfx_kthread+0x10/0x10 [ 31.691340][ T67] ret_from_fork_asm+0x1a/0x30 [ 31.691472][ T67] [ 31.691568][ T67] [ 31.691631][ T67] Allocated by task 244: [ 31.691725][ T67] kasan_save_stack+0x24/0x50 [ 31.691851][ T67] kasan_save_track+0x14/0x30 [ 31.691975][ T67] __kasan_slab_alloc+0x59/0x70 [ 31.692098][ T67] kmem_cache_alloc_noprof+0x10b/0x350 [ 31.692223][ T67] copy_net_ns+0xc6/0x340 [ 31.692315][ T67] create_new_namespaces+0x35f/0x920 [ 31.692442][ T67] unshare_nsproxy_namespaces+0x8d/0x130 [ 31.692566][ T67] ksys_unshare+0x2a9/0x660 [ 31.692689][ T67] __x64_sys_unshare+0x31/0x40 [ 31.692811][ T67] do_syscall_64+0xc1/0x1d0 [ 31.692933][ T67] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 31.693086][ T67] [ 31.693149][ T67] Freed by task 67: [ 31.693243][ T67] kasan_save_stack+0x24/0x50 [ 31.693367][ T67] kasan_save_track+0x14/0x30 [ 31.693490][ T67] kasan_save_free_info+0x3b/0x60 [ 31.693614][ T67] __kasan_slab_free+0x38/0x50 [ 31.693738][ T67] kmem_cache_free+0xf8/0x330 [ 31.693862][ T67] cleanup_net+0x5a8/0xa40 [ 31.693984][ T67] process_one_work+0xe55/0x16d0 [ 31.694105][ T67] worker_thread+0x58c/0xce0 [ 31.694228][ T67] kthread+0x28a/0x350 [ 31.694325][ T67] ret_from_fork+0x31/0x70 [ 31.694447][ T67] ret_from_fork_asm+0x1a/0x30 [ 31.694570][ T67] [ 31.694633][ T67] Last potentially related work creation: [ 31.694754][ T67] kasan_save_stack+0x24/0x50 [ 31.694880][ T67] __kasan_record_aux_stack+0x8e/0xa0 [ 31.695005][ T67] insert_work+0x34/0x230 [ 31.695099][ T67] __queue_work+0x5fd/0xa40 [ 31.695227][ T67] queue_delayed_work_on+0x8c/0xa0 [ 31.695349][ T67] __inet_insert_ifa+0x751/0xb10 [ 31.695473][ T67] inet_rtm_newaddr+0x833/0xbd0 [ 31.695595][ T67] rtnetlink_rcv_msg+0x712/0xc10 [ 31.695719][ T67] netlink_rcv_skb+0x130/0x360 [ 31.695844][ T67] netlink_unicast+0x44b/0x710 [ 31.695968][ T67] netlink_sendmsg+0x723/0xbe0 [ 31.696097][ T67] ____sys_sendmsg+0x7ac/0xa10 [ 31.696226][ T67] ___sys_sendmsg+0xee/0x170 [ 31.696350][ T67] __sys_sendmsg+0x109/0x1a0 [ 31.696476][ T67] do_syscall_64+0xc1/0x1d0 [ 31.696601][ T67] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 31.696755][ T67] [ 31.696817][ T67] Second to last potentially related work creation: [ 31.696968][ T67] kasan_save_stack+0x24/0x50 [ 31.697097][ T67] __kasan_record_aux_stack+0x8e/0xa0 [ 31.697220][ T67] insert_work+0x34/0x230 [ 31.697313][ T67] __queue_work+0x5fd/0xa40 [ 31.697436][ T67] queue_delayed_work_on+0x8c/0xa0 [ 31.697558][ T67] __inet_insert_ifa+0x751/0xb10 [ 31.697680][ T67] inetdev_event+0xb18/0xcf0 [ 31.697802][ T67] notifier_call_chain+0xcd/0x150 [ 31.697927][ T67] __dev_notify_flags+0xe6/0x250 [ 31.698053][ T67] dev_change_flags+0xec/0x160 [ 31.698176][ T67] do_setlink.constprop.0+0x79d/0x2300 [ 31.698298][ T67] rtnl_newlink+0x6de/0xa80 [ 31.698421][ T67] rtnetlink_rcv_msg+0x712/0xc10 [ 31.698545][ T67] netlink_rcv_skb+0x130/0x360 [ 31.698669][ T67] netlink_unicast+0x44b/0x710 [ 31.698792][ T67] netlink_sendmsg+0x723/0xbe0 [ 31.698917][ T67] ____sys_sendmsg+0x7ac/0xa10 [ 31.699044][ T67] ___sys_sendmsg+0xee/0x170 [ 31.699165][ T67] __sys_sendmsg+0x109/0x1a0 [ 31.699295][ T67] do_syscall_64+0xc1/0x1d0 [ 31.699419][ T67] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 31.699572][ T67] [ 31.699634][ T67] The buggy address belongs to the object at ffff888004e00040 [ 31.699634][ T67] which belongs to the cache net_namespace of size 6592 [ 31.699985][ T67] The buggy address is located 184 bytes inside of [ 31.699985][ T67] freed 6592-byte region [ffff888004e00040, ffff888004e01a00) [ 31.700290][ T67] [ 31.700354][ T67] The buggy address belongs to the physical page: [ 31.700502][ T67] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x4e00 [ 31.700726][ T67] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 31.700913][ T67] flags: 0x80000000000040(head|node=0|zone=1) [ 31.701068][ T67] page_type: f5(slab) [ 31.701164][ T67] raw: 0080000000000040 ffff888001963240 ffff8880019680a8 ffff8880019680a8 [ 31.701382][ T67] raw: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000 [ 31.701598][ T67] head: 0080000000000040 ffff888001963240 ffff8880019680a8 ffff8880019680a8 [ 31.701817][ T67] head: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000 [ 31.702040][ T67] head: 0080000000000003 ffffea0000138001 ffffffffffffffff 0000000000000000 [ 31.702255][ T67] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 31.702470][ T67] page dumped because: kasan: bad access detected [ 31.702624][ T67] [ 31.702687][ T67] Memory state around the buggy address: [ 31.702807][ T67] ffff888004dfff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.702986][ T67] ffff888004e00000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 31.703161][ T67] >ffff888004e00080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.703341][ T67] ^ [ 31.703518][ T67] ffff888004e00100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.703693][ T67] ffff888004e00180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.703869][ T67] ================================================================== [ 31.704177][ T67] Disabling lock debugging due to kernel taint