[ 13.243886][ T293] ip (293) used greatest stack depth: 23648 bytes left [ 15.151718][ T317] br0: port 1(swp1) entered blocking state [ 15.152245][ T317] br0: port 1(swp1) entered disabled state [ 15.152577][ T317] swp1: entered allmulticast mode [ 15.153782][ T317] swp1: entered promiscuous mode [ 15.514796][ T320] br0: port 2(vx0) entered blocking state [ 15.515123][ T320] br0: port 2(vx0) entered disabled state [ 15.515755][ T320] vx0: entered allmulticast mode [ 15.517065][ T320] vx0: entered promiscuous mode [ 15.518146][ T320] br0: port 2(vx0) entered blocking state [ 15.518469][ T320] br0: port 2(vx0) entered forwarding state [ 16.098945][ T38] br0: port 1(swp1) entered blocking state [ 16.099313][ T38] br0: port 1(swp1) entered forwarding state [ 16.849768][ T340] br0: port 1(swp1) entered blocking state [ 16.850122][ T340] br0: port 1(swp1) entered disabled state [ 16.857418][ T340] swp1: entered allmulticast mode [ 16.859293][ T340] swp1: entered promiscuous mode [ 16.863967][ T322] br0: port 1(swp1) entered blocking state [ 16.864202][ T322] br0: port 1(swp1) entered forwarding state [ 17.099501][ T343] br0: port 2(vx0) entered blocking state [ 17.099841][ T343] br0: port 2(vx0) entered disabled state [ 17.100046][ T343] vx0: entered allmulticast mode [ 17.101253][ T343] vx0: entered promiscuous mode [ 17.102099][ T343] br0: port 2(vx0) entered blocking state [ 17.102317][ T343] br0: port 2(vx0) entered forwarding state [ 23.211377][ T359] GACT probability NOT on [ 23.240926][ T356] tc (356) used greatest stack depth: 23320 bytes left [ 33.845573][ T67] br0: port 1(swp1) entered disabled state [ 33.982312][ T67] swp1 (unregistering): left allmulticast mode [ 33.982686][ T67] swp1 (unregistering): left promiscuous mode [ 33.982929][ T67] br0: port 1(swp1) entered disabled state [ 34.174561][ T67] br0: port 1(swp1) entered disabled state [ 34.296828][ T67] swp1 (unregistering): left allmulticast mode [ 34.297115][ T67] swp1 (unregistering): left promiscuous mode [ 34.297364][ T67] br0: port 1(swp1) entered disabled state [ 34.341085][ T67] ================================================================== [ 34.341316][ T67] BUG: KASAN: slab-use-after-free in cleanup_net+0xa5d/0xb90 [ 34.341517][ T67] Read of size 8 at addr ffff8880050180f8 by task kworker/u16:1/67 [ 34.341715][ T67] [ 34.341797][ T67] CPU: 2 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.12.0-virtme #1 [ 34.342005][ T67] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 34.342176][ T67] Workqueue: netns cleanup_net [ 34.342329][ T67] Call Trace: [ 34.342433][ T67] [ 34.342505][ T67] dump_stack_lvl+0x82/0xd0 [ 34.342647][ T67] print_address_description.constprop.0+0x2c/0x3b0 [ 34.342816][ T67] ? cleanup_net+0xa5d/0xb90 [ 34.342960][ T67] print_report+0xb4/0x270 [ 34.343093][ T67] ? kasan_addr_to_slab+0x25/0x80 [ 34.343233][ T67] kasan_report+0xbd/0xf0 [ 34.343338][ T67] ? cleanup_net+0xa5d/0xb90 [ 34.343482][ T67] cleanup_net+0xa5d/0xb90 [ 34.343617][ T67] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 34.343766][ T67] ? __pfx_cleanup_net+0x10/0x10 [ 34.343902][ T67] ? trace_lock_acquire+0x148/0x1f0 [ 34.344044][ T67] ? lock_acquire+0x32/0xc0 [ 34.344178][ T67] ? process_one_work+0xe0b/0x16d0 [ 34.344318][ T67] process_one_work+0xe55/0x16d0 [ 34.344456][ T67] ? __pfx___lock_release+0x10/0x10 [ 34.344598][ T67] ? __pfx_process_one_work+0x10/0x10 [ 34.344741][ T67] ? assign_work+0x16c/0x240 [ 34.344879][ T67] worker_thread+0x58c/0xce0 [ 34.345017][ T67] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 34.345191][ T67] ? __pfx_worker_thread+0x10/0x10 [ 34.345331][ T67] ? __pfx_worker_thread+0x10/0x10 [ 34.345467][ T67] kthread+0x28a/0x350 [ 34.345569][ T67] ? __pfx_kthread+0x10/0x10 [ 34.345709][ T67] ret_from_fork+0x31/0x70 [ 34.345843][ T67] ? __pfx_kthread+0x10/0x10 [ 34.345965][ T67] ret_from_fork_asm+0x1a/0x30 [ 34.346096][ T67] [ 34.346190][ T67] [ 34.346253][ T67] Allocated by task 264: [ 34.346354][ T67] kasan_save_stack+0x24/0x50 [ 34.346477][ T67] kasan_save_track+0x14/0x30 [ 34.346598][ T67] __kasan_slab_alloc+0x59/0x70 [ 34.346721][ T67] kmem_cache_alloc_noprof+0x10b/0x350 [ 34.346850][ T67] copy_net_ns+0xc6/0x540 [ 34.346943][ T67] create_new_namespaces+0x35f/0x920 [ 34.347091][ T67] unshare_nsproxy_namespaces+0x8a/0x1b0 [ 34.347215][ T67] ksys_unshare+0x2c4/0x6e0 [ 34.347343][ T67] __x64_sys_unshare+0x31/0x40 [ 34.347467][ T67] do_syscall_64+0xc1/0x1d0 [ 34.347593][ T67] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 34.347751][ T67] [ 34.347813][ T67] Freed by task 67: [ 34.347908][ T67] kasan_save_stack+0x24/0x50 [ 34.348031][ T67] kasan_save_track+0x14/0x30 [ 34.348153][ T67] kasan_save_free_info+0x3b/0x60 [ 34.348278][ T67] __kasan_slab_free+0x38/0x50 [ 34.348411][ T67] kmem_cache_free+0xf8/0x330 [ 34.348538][ T67] cleanup_net+0x5a8/0xb90 [ 34.348665][ T67] process_one_work+0xe55/0x16d0 [ 34.348796][ T67] worker_thread+0x58c/0xce0 [ 34.348924][ T67] kthread+0x28a/0x350 [ 34.349023][ T67] ret_from_fork+0x31/0x70 [ 34.349154][ T67] ret_from_fork_asm+0x1a/0x30 [ 34.349287][ T67] [ 34.349352][ T67] Last potentially related work creation: [ 34.349476][ T67] kasan_save_stack+0x24/0x50 [ 34.349612][ T67] __kasan_record_aux_stack+0x8e/0xa0 [ 34.349738][ T67] insert_work+0x34/0x230 [ 34.349835][ T67] __queue_work+0x5fd/0xa40 [ 34.349962][ T67] queue_delayed_work_on+0x8c/0xa0 [ 34.350089][ T67] __inet_insert_ifa+0x751/0xb10 [ 34.350221][ T67] inet_rtm_newaddr+0x833/0xbd0 [ 34.350350][ T67] rtnetlink_rcv_msg+0x712/0xc10 [ 34.350477][ T67] netlink_rcv_skb+0x130/0x360 [ 34.350612][ T67] netlink_unicast+0x44b/0x710 [ 34.350737][ T67] netlink_sendmsg+0x723/0xbe0 [ 34.350860][ T67] ____sys_sendmsg+0x7ac/0xa10 [ 34.350981][ T67] ___sys_sendmsg+0xee/0x170 [ 34.351113][ T67] __sys_sendmsg+0x109/0x1a0 [ 34.351243][ T67] do_syscall_64+0xc1/0x1d0 [ 34.351371][ T67] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 34.351533][ T67] [ 34.351601][ T67] Second to last potentially related work creation: [ 34.351759][ T67] kasan_save_stack+0x24/0x50 [ 34.351887][ T67] __kasan_record_aux_stack+0x8e/0xa0 [ 34.352019][ T67] insert_work+0x34/0x230 [ 34.352112][ T67] __queue_work+0x5fd/0xa40 [ 34.352237][ T67] queue_delayed_work_on+0x8c/0xa0 [ 34.352364][ T67] __inet_insert_ifa+0x751/0xb10 [ 34.352488][ T67] inet_rtm_newaddr+0x833/0xbd0 [ 34.352614][ T67] rtnetlink_rcv_msg+0x712/0xc10 [ 34.352737][ T67] netlink_rcv_skb+0x130/0x360 [ 34.352859][ T67] netlink_unicast+0x44b/0x710 [ 34.352987][ T67] netlink_sendmsg+0x723/0xbe0 [ 34.353110][ T67] ____sys_sendmsg+0x7ac/0xa10 [ 34.353232][ T67] ___sys_sendmsg+0xee/0x170 [ 34.353360][ T67] __sys_sendmsg+0x109/0x1a0 [ 34.353486][ T67] do_syscall_64+0xc1/0x1d0 [ 34.353607][ T67] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 34.353762][ T67] [ 34.353824][ T67] The buggy address belongs to the object at ffff888005018040 [ 34.353824][ T67] which belongs to the cache net_namespace of size 6528 [ 34.354139][ T67] The buggy address is located 184 bytes inside of [ 34.354139][ T67] freed 6528-byte region [ffff888005018040, ffff8880050199c0) [ 34.354434][ T67] [ 34.354496][ T67] The buggy address belongs to the physical page: [ 34.354643][ T67] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5018 [ 34.354865][ T67] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 34.355047][ T67] flags: 0x80000000000040(head|node=0|zone=1) [ 34.355204][ T67] page_type: f5(slab) [ 34.355303][ T67] raw: 0080000000000040 ffff888001975240 ffff88800197a0a8 ffff88800197a0a8 [ 34.355516][ T67] raw: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000 [ 34.355732][ T67] head: 0080000000000040 ffff888001975240 ffff88800197a0a8 ffff88800197a0a8 [ 34.355952][ T67] head: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000 [ 34.356173][ T67] head: 0080000000000003 ffffea0000140601 ffffffffffffffff 0000000000000000 [ 34.356394][ T67] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 34.356603][ T67] page dumped because: kasan: bad access detected [ 34.356753][ T67] [ 34.356815][ T67] Memory state around the buggy address: [ 34.356941][ T67] ffff888005017f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 34.357123][ T67] ffff888005018000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 34.357299][ T67] >ffff888005018080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.357474][ T67] ^ [ 34.357650][ T67] ffff888005018100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.357829][ T67] ffff888005018180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.358003][ T67] ================================================================== [ 34.358222][ T67] Disabling lock debugging due to kernel taint [ 34.450906][ T67] vx0: left allmulticast mode [ 34.451118][ T67] vx0: left promiscuous mode [ 34.451378][ T67] br0: port 2(vx0) entered disabled state [ 34.688154][ T67] vx0: left allmulticast mode [ 34.688553][ T67] vx0: left promiscuous mode [ 34.688805][ T67] br0: port 2(vx0) entered disabled state [ 39.176968][ T586] br0: port 1(swp1) entered blocking state [ 39.177198][ T586] br0: port 1(swp1) entered disabled state [ 39.177402][ T586] swp1: entered allmulticast mode [ 39.178404][ T586] swp1: entered promiscuous mode [ 39.382211][ T589] br0: port 2(vx0) entered blocking state [ 39.382539][ T589] br0: port 2(vx0) entered disabled state [ 39.382775][ T589] vx0: entered allmulticast mode [ 39.384259][ T589] vx0: entered promiscuous mode [ 39.386239][ T589] br0: port 2(vx0) entered blocking state [ 39.386455][ T589] br0: port 2(vx0) entered forwarding state [ 39.570835][ T38] br0: port 1(swp1) entered blocking state [ 39.571073][ T38] br0: port 1(swp1) entered forwarding state [ 40.429536][ T606] br0: port 1(swp1) entered blocking state [ 40.429927][ T606] br0: port 1(swp1) entered disabled state [ 40.430219][ T606] swp1: entered allmulticast mode [ 40.431696][ T606] swp1: entered promiscuous mode [ 40.436930][ T157] br0: port 1(swp1) entered blocking state [ 40.437166][ T157] br0: port 1(swp1) entered forwarding state [ 40.623683][ T609] br0: port 2(vx0) entered blocking state [ 40.623933][ T609] br0: port 2(vx0) entered disabled state [ 40.624092][ T609] vx0: entered allmulticast mode [ 40.625017][ T609] vx0: entered promiscuous mode [ 40.625409][ T609] br0: port 2(vx0) entered blocking state [ 40.625551][ T609] br0: port 2(vx0) entered forwarding state [ 62.202100][ T67] br0: port 1(swp1) entered disabled state [ 62.335575][ T67] swp1 (unregistering): left allmulticast mode [ 62.335842][ T67] swp1 (unregistering): left promiscuous mode [ 62.336008][ T67] br0: port 1(swp1) entered disabled state [ 62.435765][ T67] br0: port 1(swp1) entered disabled state [ 62.539948][ T67] swp1 (unregistering): left allmulticast mode [ 62.540216][ T67] swp1 (unregistering): left promiscuous mode [ 62.540391][ T67] br0: port 1(swp1) entered disabled state [ 62.610954][ T67] vx0: left allmulticast mode [ 62.611119][ T67] vx0: left promiscuous mode [ 62.611374][ T67] br0: port 2(vx0) entered disabled state [ 62.834347][ T67] vx0: left allmulticast mode [ 62.834512][ T67] vx0: left promiscuous mode [ 62.834749][ T67] br0: port 2(vx0) entered disabled state [ 67.316674][ T846] br0: port 1(swp1) entered blocking state [ 67.316988][ T846] br0: port 1(swp1) entered disabled state [ 67.317184][ T846] swp1: entered allmulticast mode [ 67.318086][ T846] swp1: entered promiscuous mode [ 67.492177][ T849] br0: port 2(vx0) entered blocking state [ 67.492522][ T849] br0: port 2(vx0) entered disabled state [ 67.492756][ T849] vx0: entered allmulticast mode [ 67.493690][ T849] vx0: entered promiscuous mode [ 67.494142][ T849] br0: port 2(vx0) entered blocking state [ 67.494317][ T849] br0: port 2(vx0) entered forwarding state [ 67.858732][ T322] br0: port 1(swp1) entered blocking state [ 67.859052][ T322] br0: port 1(swp1) entered forwarding state [ 68.467883][ T866] br0: port 1(swp1) entered blocking state [ 68.468127][ T866] br0: port 1(swp1) entered disabled state [ 68.468349][ T866] swp1: entered allmulticast mode [ 68.469242][ T866] swp1: entered promiscuous mode [ 68.472039][ T157] br0: port 1(swp1) entered blocking state [ 68.472256][ T157] br0: port 1(swp1) entered forwarding state [ 68.625505][ T869] br0: port 2(vx0) entered blocking state [ 68.625785][ T869] br0: port 2(vx0) entered disabled state [ 68.625937][ T869] vx0: entered allmulticast mode [ 68.626911][ T869] vx0: entered promiscuous mode [ 68.628269][ T869] br0: port 2(vx0) entered blocking state [ 68.628434][ T869] br0: port 2(vx0) entered forwarding state [ 79.752756][ T67] br0: port 1(swp1) entered disabled state [ 79.905580][ T67] swp1 (unregistering): left allmulticast mode [ 79.905800][ T67] swp1 (unregistering): left promiscuous mode [ 79.905979][ T67] br0: port 1(swp1) entered disabled state [ 79.994205][ T67] br0: port 1(swp1) entered disabled state [ 80.083576][ T67] swp1 (unregistering): left allmulticast mode [ 80.083803][ T67] swp1 (unregistering): left promiscuous mode [ 80.083995][ T67] br0: port 1(swp1) entered disabled state [ 80.197481][ T67] vx0: left allmulticast mode [ 80.197790][ T67] vx0: left promiscuous mode [ 80.198046][ T67] br0: port 2(vx0) entered disabled state [ 80.443598][ T67] vx0: left allmulticast mode [ 80.443763][ T67] vx0: left promiscuous mode [ 80.443995][ T67] br0: port 2(vx0) entered disabled state [ 84.700695][ T1098] br0: port 1(swp1) entered blocking state [ 84.700905][ T1098] br0: port 1(swp1) entered disabled state [ 84.701078][ T1098] swp1: entered allmulticast mode [ 84.701942][ T1098] swp1: entered promiscuous mode [ 84.871347][ T1101] br0: port 2(vx0) entered blocking state [ 84.871609][ T1101] br0: port 2(vx0) entered disabled state [ 84.871783][ T1101] vx0: entered allmulticast mode [ 84.872661][ T1101] vx0: entered promiscuous mode [ 84.873062][ T1101] br0: port 2(vx0) entered blocking state [ 84.873212][ T1101] br0: port 2(vx0) entered forwarding state [ 85.330737][ T38] br0: port 1(swp1) entered blocking state [ 85.330942][ T38] br0: port 1(swp1) entered forwarding state [ 85.782823][ T1118] br0: port 1(swp1) entered blocking state [ 85.783092][ T1118] br0: port 1(swp1) entered disabled state [ 85.783283][ T1118] swp1: entered allmulticast mode [ 85.784151][ T1118] swp1: entered promiscuous mode [ 85.786979][ T45] br0: port 1(swp1) entered blocking state [ 85.787158][ T45] br0: port 1(swp1) entered forwarding state [ 85.947439][ T1121] br0: port 2(vx0) entered blocking state [ 85.947650][ T1121] br0: port 2(vx0) entered disabled state [ 85.947811][ T1121] vx0: entered allmulticast mode [ 85.948741][ T1121] vx0: entered promiscuous mode [ 85.949250][ T1121] br0: port 2(vx0) entered blocking state [ 85.949419][ T1121] br0: port 2(vx0) entered forwarding state [ 96.848854][ T67] br0: port 1(swp1) entered disabled state [ 96.953666][ T67] swp1 (unregistering): left allmulticast mode [ 96.953949][ T67] swp1 (unregistering): left promiscuous mode [ 96.954183][ T67] br0: port 1(swp1) entered disabled state [ 97.067826][ T67] br0: port 1(swp1) entered disabled state [ 97.163725][ T67] swp1 (unregistering): left allmulticast mode [ 97.163941][ T67] swp1 (unregistering): left promiscuous mode [ 97.164113][ T67] br0: port 1(swp1) entered disabled state [ 97.270582][ T67] vx0: left allmulticast mode [ 97.270770][ T67] vx0: left promiscuous mode [ 97.271031][ T67] br0: port 2(vx0) entered disabled state [ 97.532590][ T67] vx0: left allmulticast mode [ 97.532770][ T67] vx0: left promiscuous mode [ 97.533015][ T67] br0: port 2(vx0) entered disabled state