[ 13.341569][ T276] ip (276) used greatest stack depth: 24232 bytes left [ 13.853226][ T281] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this. [ 14.388581][ T291] br0: port 1(c1) entered blocking state [ 14.388988][ T291] br0: port 1(c1) entered disabled state [ 14.389298][ T291] c1: entered allmulticast mode [ 14.391337][ T291] c1: entered promiscuous mode [ 14.399589][ T291] ip (291) used greatest stack depth: 24184 bytes left [ 14.825622][ T296] br0: port 2(c2) entered blocking state [ 14.825841][ T296] br0: port 2(c2) entered disabled state [ 14.826068][ T296] c2: entered allmulticast mode [ 14.828289][ T296] c2: entered promiscuous mode [ 15.027209][ T298] ip (298) used greatest stack depth: 22872 bytes left [ 15.272328][ T301] br0: port 3(c3) entered blocking state [ 15.272647][ T301] br0: port 3(c3) entered disabled state [ 15.272871][ T301] c3: entered allmulticast mode [ 15.275013][ T301] c3: entered promiscuous mode [ 15.723417][ T306] br0: port 4(sender) entered blocking state [ 15.723779][ T306] br0: port 4(sender) entered disabled state [ 15.724072][ T306] sender: entered allmulticast mode [ 15.725930][ T306] sender: entered promiscuous mode [ 15.886338][ T308] br0: port 4(sender) entered blocking state [ 15.886756][ T308] br0: port 4(sender) entered forwarding state [ 15.887416][ T308] br0: port 3(c3) entered blocking state [ 15.887638][ T308] br0: port 3(c3) entered forwarding state [ 15.888063][ T308] br0: port 2(c2) entered blocking state [ 15.888278][ T308] br0: port 2(c2) entered forwarding state [ 15.888690][ T308] br0: port 1(c1) entered blocking state [ 15.888910][ T308] br0: port 1(c1) entered forwarding state [ 16.017974][ T309] Bridge firewalling registered [ 28.807007][ T11] br0: port 1(c1) entered disabled state [ 28.923578][ T11] c1 (unregistering): left allmulticast mode [ 28.923985][ T11] c1 (unregistering): left promiscuous mode [ 28.924218][ T11] br0: port 1(c1) entered disabled state [ 29.154136][ T11] br0: port 2(c2) entered disabled state [ 29.270593][ T11] c2 (unregistering): left allmulticast mode [ 29.270847][ T11] c2 (unregistering): left promiscuous mode [ 29.271078][ T11] br0: port 2(c2) entered disabled state [ 29.313507][ T11] ================================================================== [ 29.313790][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 29.313980][ T11] Read of size 8 at addr ffff88800a031c38 by task kworker/u16:0/11 [ 29.314166][ T11] [ 29.314231][ T11] CPU: 0 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 29.314423][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 29.314580][ T11] Workqueue: netns cleanup_net [ 29.314713][ T11] Call Trace: [ 29.314811][ T11] [ 29.314876][ T11] dump_stack_lvl+0x82/0xd0 [ 29.315006][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 29.315165][ T11] ? cleanup_net+0x932/0xa40 [ 29.315294][ T11] print_report+0xb4/0x270 [ 29.315418][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 29.315544][ T11] kasan_report+0xbd/0xf0 [ 29.315640][ T11] ? cleanup_net+0x932/0xa40 [ 29.315767][ T11] cleanup_net+0x932/0xa40 [ 29.315895][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 29.316023][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 29.316155][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 29.316284][ T11] ? lock_acquire+0x32/0xc0 [ 29.316407][ T11] ? process_one_work+0xe0b/0x16d0 [ 29.316538][ T11] process_one_work+0xe55/0x16d0 [ 29.316663][ T11] ? __pfx___lock_release+0x10/0x10 [ 29.316791][ T11] ? __pfx_process_one_work+0x10/0x10 [ 29.316918][ T11] ? assign_work+0x16c/0x240 [ 29.317043][ T11] worker_thread+0x58c/0xce0 [ 29.317171][ T11] ? __pfx_worker_thread+0x10/0x10 [ 29.317295][ T11] kthread+0x28a/0x350 [ 29.317391][ T11] ? __pfx_kthread+0x10/0x10 [ 29.317529][ T11] ret_from_fork+0x31/0x70 [ 29.317653][ T11] ? __pfx_kthread+0x10/0x10 [ 29.317775][ T11] ret_from_fork_asm+0x1a/0x30 [ 29.317901][ T11] [ 29.317998][ T11] [ 29.318065][ T11] Allocated by task 269: [ 29.318158][ T11] kasan_save_stack+0x24/0x50 [ 29.318283][ T11] kasan_save_track+0x14/0x30 [ 29.318405][ T11] __kasan_slab_alloc+0x59/0x70 [ 29.318525][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 29.318646][ T11] copy_net_ns+0xc6/0x340 [ 29.318742][ T11] create_new_namespaces+0x35f/0x920 [ 29.318870][ T11] unshare_nsproxy_namespaces+0x8d/0x130 [ 29.319002][ T11] ksys_unshare+0x2a9/0x660 [ 29.319130][ T11] __x64_sys_unshare+0x31/0x40 [ 29.319254][ T11] do_syscall_64+0xc1/0x1d0 [ 29.319379][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 29.319534][ T11] [ 29.319597][ T11] Freed by task 11: [ 29.319689][ T11] kasan_save_stack+0x24/0x50 [ 29.319820][ T11] kasan_save_track+0x14/0x30 [ 29.319947][ T11] kasan_save_free_info+0x3b/0x60 [ 29.320075][ T11] __kasan_slab_free+0x38/0x50 [ 29.320197][ T11] kmem_cache_free+0xf8/0x330 [ 29.320324][ T11] cleanup_net+0x5a8/0xa40 [ 29.320447][ T11] process_one_work+0xe55/0x16d0 [ 29.320571][ T11] worker_thread+0x58c/0xce0 [ 29.320696][ T11] kthread+0x28a/0x350 [ 29.320795][ T11] ret_from_fork+0x31/0x70 [ 29.320920][ T11] ret_from_fork_asm+0x1a/0x30 [ 29.321043][ T11] [ 29.321108][ T11] Last potentially related work creation: [ 29.321229][ T11] kasan_save_stack+0x24/0x50 [ 29.321362][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 29.321486][ T11] insert_work+0x34/0x230 [ 29.321580][ T11] __queue_work+0x5fd/0xa40 [ 29.321707][ T11] queue_delayed_work_on+0x8c/0xa0 [ 29.321833][ T11] __inet_insert_ifa+0x751/0xb10 [ 29.321957][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 29.322080][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 29.322205][ T11] netlink_rcv_skb+0x130/0x360 [ 29.322332][ T11] netlink_unicast+0x44b/0x710 [ 29.322456][ T11] netlink_sendmsg+0x723/0xbe0 [ 29.322579][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 29.322707][ T11] ___sys_sendmsg+0xee/0x170 [ 29.322832][ T11] __sys_sendmsg+0x109/0x1a0 [ 29.322954][ T11] do_syscall_64+0xc1/0x1d0 [ 29.323080][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 29.323231][ T11] [ 29.323296][ T11] Second to last potentially related work creation: [ 29.323444][ T11] kasan_save_stack+0x24/0x50 [ 29.323571][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 29.323695][ T11] insert_work+0x34/0x230 [ 29.323790][ T11] __queue_work+0x5fd/0xa40 [ 29.323912][ T11] queue_delayed_work_on+0x8c/0xa0 [ 29.324036][ T11] __inet_insert_ifa+0x751/0xb10 [ 29.324162][ T11] inetdev_event+0xb18/0xcf0 [ 29.324290][ T11] notifier_call_chain+0xcd/0x150 [ 29.324416][ T11] __dev_notify_flags+0xe6/0x250 [ 29.324543][ T11] dev_change_flags+0xec/0x160 [ 29.324667][ T11] do_setlink.constprop.0+0x79d/0x2300 [ 29.324792][ T11] rtnl_newlink+0x6de/0xa80 [ 29.324917][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 29.325041][ T11] netlink_rcv_skb+0x130/0x360 [ 29.325166][ T11] netlink_unicast+0x44b/0x710 [ 29.325292][ T11] netlink_sendmsg+0x723/0xbe0 [ 29.325414][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 29.325541][ T11] ___sys_sendmsg+0xee/0x170 [ 29.325668][ T11] __sys_sendmsg+0x109/0x1a0 [ 29.325794][ T11] do_syscall_64+0xc1/0x1d0 [ 29.325921][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 29.326076][ T11] [ 29.326139][ T11] The buggy address belongs to the object at ffff88800a031b80 [ 29.326139][ T11] which belongs to the cache net_namespace of size 6592 [ 29.326464][ T11] The buggy address is located 184 bytes inside of [ 29.326464][ T11] freed 6592-byte region [ffff88800a031b80, ffff88800a033540) [ 29.326757][ T11] [ 29.326881][ T11] The buggy address belongs to the physical page: [ 29.327088][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xa030 [ 29.327306][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 29.327495][ T11] flags: 0x80000000000040(head|node=0|zone=1) [ 29.327711][ T11] page_type: f5(slab) [ 29.327808][ T11] raw: 0080000000000040 ffff888001963240 ffffea0000284a10 ffff8880019680a8 [ 29.328092][ T11] raw: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000 [ 29.328311][ T11] head: 0080000000000040 ffff888001963240 ffffea0000284a10 ffff8880019680a8 [ 29.328602][ T11] head: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000 [ 29.328828][ T11] head: 0080000000000003 ffffea0000280c01 ffffffffffffffff 0000000000000000 [ 29.329113][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 29.329328][ T11] page dumped because: kasan: bad access detected [ 29.329481][ T11] [ 29.329544][ T11] Memory state around the buggy address: [ 29.329663][ T11] ffff88800a031b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.329959][ T11] ffff88800a031b80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.330134][ T11] >ffff88800a031c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.330315][ T11] ^ [ 29.330523][ T11] ffff88800a031c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.330700][ T11] ffff88800a031d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.330879][ T11] ================================================================== [ 29.331075][ T11] Disabling lock debugging due to kernel taint [ 29.455632][ T11] br0: port 3(c3) entered disabled state [ 29.522313][ T11] c3 (unregistering): left allmulticast mode [ 29.522591][ T11] c3 (unregistering): left promiscuous mode [ 29.522764][ T11] br0: port 3(c3) entered disabled state [ 29.709829][ T11] br0: port 4(sender) entered disabled state [ 29.784318][ T11] sender (unregistering): left allmulticast mode [ 29.784529][ T11] sender (unregistering): left promiscuous mode [ 29.784703][ T11] br0: port 4(sender) entered disabled state