[ 14.220070][ T266] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this. [ 14.535886][ T269] br0: port 1(veth0) entered blocking state [ 14.536322][ T269] br0: port 1(veth0) entered disabled state [ 14.537439][ T269] veth0: entered allmulticast mode [ 14.539469][ T269] veth0: entered promiscuous mode [ 14.631595][ T270] br0: port 2(veth1) entered blocking state [ 14.631916][ T270] br0: port 2(veth1) entered disabled state [ 14.632191][ T270] veth1: entered allmulticast mode [ 14.634332][ T270] veth1: entered promiscuous mode [ 14.946051][ T40] br0: port 1(veth0) entered blocking state [ 14.946430][ T40] br0: port 1(veth0) entered forwarding state [ 15.040936][ T40] br0: port 2(veth1) entered blocking state [ 15.041211][ T40] br0: port 2(veth1) entered forwarding state [ 19.025415][ T11] veth1: left allmulticast mode [ 19.025802][ T11] veth1: left promiscuous mode [ 19.026184][ T11] br0: port 2(veth1) entered disabled state [ 19.029808][ T11] veth0: left allmulticast mode [ 19.030106][ T11] veth0: left promiscuous mode [ 19.030449][ T11] br0: port 1(veth0) entered disabled state [ 19.563374][ T11] ================================================================== [ 19.563617][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 19.563830][ T11] Read of size 8 at addr ffff888004f800f8 by task kworker/u16:0/11 [ 19.564044][ T11] [ 19.564119][ T11] CPU: 1 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 19.564337][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 19.564516][ T11] Workqueue: netns cleanup_net [ 19.564669][ T11] Call Trace: [ 19.564778][ T11] [ 19.564853][ T11] dump_stack_lvl+0x82/0xd0 [ 19.565004][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 19.565192][ T11] ? cleanup_net+0x932/0xa40 [ 19.565335][ T11] print_report+0xb4/0x270 [ 19.565473][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 19.565630][ T11] kasan_report+0xbd/0xf0 [ 19.565743][ T11] ? cleanup_net+0x932/0xa40 [ 19.565884][ T11] cleanup_net+0x932/0xa40 [ 19.566023][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 19.566168][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 19.566314][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 19.566453][ T11] ? lock_acquire+0x32/0xc0 [ 19.566592][ T11] ? process_one_work+0xe0b/0x16d0 [ 19.566734][ T11] process_one_work+0xe55/0x16d0 [ 19.566874][ T11] ? __pfx___lock_release+0x10/0x10 [ 19.567012][ T11] ? __pfx_process_one_work+0x10/0x10 [ 19.567153][ T11] ? assign_work+0x16c/0x240 [ 19.567308][ T11] worker_thread+0x58c/0xce0 [ 19.567463][ T11] ? __pfx_worker_thread+0x10/0x10 [ 19.567602][ T11] kthread+0x28a/0x350 [ 19.567709][ T11] ? __pfx_kthread+0x10/0x10 [ 19.567851][ T11] ret_from_fork+0x31/0x70 [ 19.567992][ T11] ? __pfx_kthread+0x10/0x10 [ 19.568133][ T11] ret_from_fork_asm+0x1a/0x30 [ 19.568274][ T11] [ 19.568385][ T11] [ 19.568456][ T11] Allocated by task 250: [ 19.568561][ T11] kasan_save_stack+0x24/0x50 [ 19.568690][ T11] kasan_save_track+0x14/0x30 [ 19.568815][ T11] __kasan_slab_alloc+0x59/0x70 [ 19.568940][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 19.569067][ T11] copy_net_ns+0xc6/0x340 [ 19.569162][ T11] create_new_namespaces+0x35f/0x920 [ 19.569292][ T11] unshare_nsproxy_namespaces+0x8d/0x130 [ 19.569424][ T11] ksys_unshare+0x2a9/0x660 [ 19.569551][ T11] __x64_sys_unshare+0x31/0x40 [ 19.569678][ T11] do_syscall_64+0xc1/0x1d0 [ 19.569804][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 19.569963][ T11] [ 19.570030][ T11] Freed by task 11: [ 19.570126][ T11] kasan_save_stack+0x24/0x50 [ 19.570257][ T11] kasan_save_track+0x14/0x30 [ 19.570385][ T11] kasan_save_free_info+0x3b/0x60 [ 19.570516][ T11] __kasan_slab_free+0x38/0x50 [ 19.570642][ T11] kmem_cache_free+0xf8/0x330 [ 19.570768][ T11] cleanup_net+0x5a8/0xa40 [ 19.570894][ T11] process_one_work+0xe55/0x16d0 [ 19.571021][ T11] worker_thread+0x58c/0xce0 [ 19.571145][ T11] kthread+0x28a/0x350 [ 19.571244][ T11] ret_from_fork+0x31/0x70 [ 19.571376][ T11] ret_from_fork_asm+0x1a/0x30 [ 19.571515][ T11] [ 19.571580][ T11] Last potentially related work creation: [ 19.571707][ T11] kasan_save_stack+0x24/0x50 [ 19.571836][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 19.571966][ T11] insert_work+0x34/0x230 [ 19.572061][ T11] __queue_work+0x5fd/0xa40 [ 19.572190][ T11] queue_delayed_work_on+0x8c/0xa0 [ 19.572320][ T11] __inet_insert_ifa+0x751/0xb10 [ 19.572460][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 19.572601][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 19.572745][ T11] netlink_rcv_skb+0x130/0x360 [ 19.572888][ T11] netlink_unicast+0x44b/0x710 [ 19.573028][ T11] netlink_sendmsg+0x723/0xbe0 [ 19.573170][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 19.573324][ T11] ___sys_sendmsg+0xee/0x170 [ 19.573464][ T11] __sys_sendmsg+0x109/0x1a0 [ 19.573607][ T11] do_syscall_64+0xc1/0x1d0 [ 19.573753][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 19.573930][ T11] [ 19.574009][ T11] Second to last potentially related work creation: [ 19.574186][ T11] kasan_save_stack+0x24/0x50 [ 19.574337][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 19.574476][ T11] insert_work+0x34/0x230 [ 19.574572][ T11] __queue_work+0x5fd/0xa40 [ 19.574698][ T11] queue_delayed_work_on+0x8c/0xa0 [ 19.574827][ T11] __inet_insert_ifa+0x751/0xb10 [ 19.574955][ T11] inetdev_event+0xb18/0xcf0 [ 19.575096][ T11] notifier_call_chain+0xcd/0x150 [ 19.575226][ T11] __dev_notify_flags+0xe6/0x250 [ 19.575364][ T11] dev_change_flags+0xec/0x160 [ 19.575498][ T11] do_setlink.constprop.0+0x79d/0x2300 [ 19.575628][ T11] rtnl_newlink+0x6de/0xa80 [ 19.575758][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 19.575888][ T11] netlink_rcv_skb+0x130/0x360 [ 19.576017][ T11] netlink_unicast+0x44b/0x710 [ 19.576143][ T11] netlink_sendmsg+0x723/0xbe0 [ 19.576270][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 19.576403][ T11] ___sys_sendmsg+0xee/0x170 [ 19.576538][ T11] __sys_sendmsg+0x109/0x1a0 [ 19.576667][ T11] do_syscall_64+0xc1/0x1d0 [ 19.576796][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 19.576958][ T11] [ 19.577024][ T11] The buggy address belongs to the object at ffff888004f80040 [ 19.577024][ T11] which belongs to the cache net_namespace of size 6592 [ 19.577373][ T11] The buggy address is located 184 bytes inside of [ 19.577373][ T11] freed 6592-byte region [ffff888004f80040, ffff888004f81a00) [ 19.577686][ T11] [ 19.577753][ T11] The buggy address belongs to the physical page: [ 19.577909][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888004f85200 pfn:0x4f80 [ 19.578164][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 19.578366][ T11] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 19.578530][ T11] page_type: f5(slab) [ 19.578633][ T11] raw: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 19.578865][ T11] raw: ffff888004f85200 0000000000040003 00000001f5000000 0000000000000000 [ 19.579098][ T11] head: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 19.579329][ T11] head: ffff888004f85200 0000000000040003 00000001f5000000 0000000000000000 [ 19.579553][ T11] head: 0080000000000003 ffffea000013e001 ffffffffffffffff 0000000000000000 [ 19.579774][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 19.579996][ T11] page dumped because: kasan: bad access detected [ 19.580158][ T11] [ 19.580224][ T11] Memory state around the buggy address: [ 19.580353][ T11] ffff888004f7ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.580540][ T11] ffff888004f80000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 19.580724][ T11] >ffff888004f80080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.580914][ T11] ^ [ 19.581095][ T11] ffff888004f80100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.581277][ T11] ffff888004f80180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.581460][ T11] ================================================================== [ 19.581680][ T11] Disabling lock debugging due to kernel taint