[ 645.809147][ T3734] br1: port 1(vx1) entered blocking state [ 645.809420][ T3734] br1: port 1(vx1) entered disabled state [ 645.809689][ T3734] vx1: entered allmulticast mode [ 645.812012][ T3734] vx1: entered promiscuous mode [ 645.813792][ T3734] br1: port 1(vx1) entered blocking state [ 645.814035][ T3734] br1: port 1(vx1) entered forwarding state [ 645.900310][ T3735] br1: port 2(veth1) entered blocking state [ 645.900707][ T3735] br1: port 2(veth1) entered disabled state [ 645.901078][ T3735] veth1: entered allmulticast mode [ 645.903137][ T3735] veth1: entered promiscuous mode [ 645.991154][ T65] br1: port 2(veth1) entered blocking state [ 645.991575][ T65] br1: port 2(veth1) entered forwarding state [ 646.195236][ T3738] br1: port 3(veth2) entered blocking state [ 646.195560][ T3738] br1: port 3(veth2) entered disabled state [ 646.195856][ T3738] veth2: entered allmulticast mode [ 646.197879][ T3738] veth2: entered promiscuous mode [ 646.312277][ T65] br1: port 3(veth2) entered blocking state [ 646.312581][ T65] br1: port 3(veth2) entered forwarding state [ 649.635456][ T3791] br2: port 1(w1) entered blocking state [ 649.635764][ T3791] br2: port 1(w1) entered disabled state [ 649.636026][ T3791] w1: entered allmulticast mode [ 649.638062][ T3791] w1: entered promiscuous mode [ 650.157606][ T3797] br2: port 2(vx2) entered blocking state [ 650.157919][ T3797] br2: port 2(vx2) entered disabled state [ 650.158326][ T3797] vx2: entered allmulticast mode [ 650.160488][ T3797] vx2: entered promiscuous mode [ 650.161453][ T3797] br2: port 2(vx2) entered blocking state [ 650.161749][ T3797] br2: port 2(vx2) entered forwarding state [ 650.824927][ T3248] br2: port 1(w1) entered blocking state [ 650.825349][ T3248] br2: port 1(w1) entered forwarding state [ 652.897048][ T3830] br2: port 1(w1) entered blocking state [ 652.897425][ T3830] br2: port 1(w1) entered disabled state [ 652.897789][ T3830] w1: entered allmulticast mode [ 652.901545][ T3830] w1: entered promiscuous mode [ 653.474824][ T3836] br2: port 2(vx2) entered blocking state [ 653.475083][ T3836] br2: port 2(vx2) entered disabled state [ 653.476213][ T3836] vx2: entered allmulticast mode [ 653.478136][ T3836] vx2: entered promiscuous mode [ 653.479799][ T3836] br2: port 2(vx2) entered blocking state [ 653.480048][ T3836] br2: port 2(vx2) entered forwarding state [ 654.148087][ T65] br2: port 1(w1) entered blocking state [ 654.148879][ T65] br2: port 1(w1) entered forwarding state [ 710.919817][ T11] vx2: left allmulticast mode [ 710.920129][ T11] vx2: left promiscuous mode [ 710.920516][ T11] br2: port 2(vx2) entered disabled state [ 710.922967][ T11] w1: left allmulticast mode [ 710.923173][ T11] w1: left promiscuous mode [ 710.923569][ T11] br2: port 1(w1) entered disabled state [ 711.453886][ T11] vx2: left allmulticast mode [ 711.454115][ T11] vx2: left promiscuous mode [ 711.454485][ T11] br2: port 2(vx2) entered disabled state [ 711.457434][ T11] w1: left allmulticast mode [ 711.457644][ T11] w1: left promiscuous mode [ 711.457951][ T11] br2: port 1(w1) entered disabled state [ 711.721665][ T11] ================================================================== [ 711.721899][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 711.722094][ T11] Read of size 8 at addr ffff888018cf9a38 by task kworker/u16:0/11 [ 711.722296][ T11] [ 711.722362][ T11] CPU: 0 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 711.722550][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 711.722715][ T11] Workqueue: netns cleanup_net [ 711.722878][ T11] Call Trace: [ 711.723012][ T11] [ 711.723090][ T11] dump_stack_lvl+0x82/0xd0 [ 711.723241][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 711.723403][ T11] ? cleanup_net+0x932/0xa40 [ 711.723530][ T11] print_report+0xb4/0x270 [ 711.723696][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 711.723822][ T11] kasan_report+0xbd/0xf0 [ 711.723919][ T11] ? cleanup_net+0x932/0xa40 [ 711.724043][ T11] cleanup_net+0x932/0xa40 [ 711.724177][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 711.724323][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 711.724488][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 711.724618][ T11] ? lock_acquire+0x32/0xc0 [ 711.724757][ T11] ? process_one_work+0xe0b/0x16d0 [ 711.724890][ T11] process_one_work+0xe55/0x16d0 [ 711.725025][ T11] ? __pfx___lock_release+0x10/0x10 [ 711.725160][ T11] ? __pfx_process_one_work+0x10/0x10 [ 711.725302][ T11] ? assign_work+0x16c/0x240 [ 711.725428][ T11] worker_thread+0x58c/0xce0 [ 711.725554][ T11] ? __pfx_worker_thread+0x10/0x10 [ 711.725675][ T11] kthread+0x28a/0x350 [ 711.725770][ T11] ? __pfx_kthread+0x10/0x10 [ 711.725892][ T11] ret_from_fork+0x31/0x70 [ 711.726025][ T11] ? __pfx_kthread+0x10/0x10 [ 711.726153][ T11] ret_from_fork_asm+0x1a/0x30 [ 711.726296][ T11] [ 711.726393][ T11] [ 711.726458][ T11] Allocated by task 3809: [ 711.726555][ T11] kasan_save_stack+0x24/0x50 [ 711.726685][ T11] kasan_save_track+0x14/0x30 [ 711.726839][ T11] __kasan_slab_alloc+0x59/0x70 [ 711.726998][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 711.727133][ T11] copy_net_ns+0xc6/0x340 [ 711.727245][ T11] create_new_namespaces+0x35f/0x920 [ 711.727371][ T11] unshare_nsproxy_namespaces+0x8d/0x130 [ 711.727501][ T11] ksys_unshare+0x2a9/0x660 [ 711.727659][ T11] __x64_sys_unshare+0x31/0x40 [ 711.727791][ T11] do_syscall_64+0xc1/0x1d0 [ 711.727932][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 711.728114][ T11] [ 711.728185][ T11] Freed by task 11: [ 711.728296][ T11] kasan_save_stack+0x24/0x50 [ 711.728440][ T11] kasan_save_track+0x14/0x30 [ 711.728578][ T11] kasan_save_free_info+0x3b/0x60 [ 711.728717][ T11] __kasan_slab_free+0x38/0x50 [ 711.728852][ T11] kmem_cache_free+0xf8/0x330 [ 711.728990][ T11] cleanup_net+0x5a8/0xa40 [ 711.729130][ T11] process_one_work+0xe55/0x16d0 [ 711.729281][ T11] worker_thread+0x58c/0xce0 [ 711.729407][ T11] kthread+0x28a/0x350 [ 711.729502][ T11] ret_from_fork+0x31/0x70 [ 711.729630][ T11] ret_from_fork_asm+0x1a/0x30 [ 711.729755][ T11] [ 711.729821][ T11] Last potentially related work creation: [ 711.729957][ T11] kasan_save_stack+0x24/0x50 [ 711.730084][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 711.730238][ T11] insert_work+0x34/0x230 [ 711.730351][ T11] __queue_work+0x5fd/0xa40 [ 711.730488][ T11] queue_delayed_work_on+0x8c/0xa0 [ 711.730624][ T11] __inet_insert_ifa+0x751/0xb10 [ 711.730763][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 711.730903][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 711.731034][ T11] netlink_rcv_skb+0x130/0x360 [ 711.731161][ T11] netlink_unicast+0x44b/0x710 [ 711.731305][ T11] netlink_sendmsg+0x723/0xbe0 [ 711.731434][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 711.731583][ T11] ___sys_sendmsg+0xee/0x170 [ 711.731727][ T11] __sys_sendmsg+0x109/0x1a0 [ 711.731850][ T11] do_syscall_64+0xc1/0x1d0 [ 711.731977][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 711.732146][ T11] [ 711.732220][ T11] The buggy address belongs to the object at ffff888018cf9980 [ 711.732220][ T11] which belongs to the cache net_namespace of size 6080 [ 711.732557][ T11] The buggy address is located 184 bytes inside of [ 711.732557][ T11] freed 6080-byte region [ffff888018cf9980, ffff888018cfb140) [ 711.732853][ T11] [ 711.732916][ T11] The buggy address belongs to the physical page: [ 711.733066][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888018cfb2c0 pfn:0x18cf8 [ 711.733334][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 711.733525][ T11] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 711.733690][ T11] page_type: f5(slab) [ 711.733790][ T11] raw: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 711.734015][ T11] raw: ffff888018cfb2c0 0000000000050002 00000001f5000000 0000000000000000 [ 711.734242][ T11] head: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 711.734464][ T11] head: ffff888018cfb2c0 0000000000050002 00000001f5000000 0000000000000000 [ 711.734691][ T11] head: 0080000000000003 ffffea0000633e01 ffffffffffffffff 0000000000000000 [ 711.734985][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 711.735214][ T11] page dumped because: kasan: bad access detected [ 711.735368][ T11] [ 711.735430][ T11] Memory state around the buggy address: [ 711.735585][ T11] ffff888018cf9900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 711.735774][ T11] ffff888018cf9980: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 711.736029][ T11] >ffff888018cf9a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 711.736244][ T11] ^ [ 711.736458][ T11] ffff888018cf9a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 711.736658][ T11] ffff888018cf9b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 711.736904][ T11] ================================================================== [ 711.737255][ T11] Disabling lock debugging due to kernel taint [ 713.102339][ T4028] br1: port 3(veth2) entered disabled state [ 713.163712][ T4029] veth2: left allmulticast mode [ 713.163951][ T4029] veth2: left promiscuous mode [ 713.164244][ T4029] br1: port 3(veth2) entered disabled state [ 713.355243][ T4031] br1: port 2(veth1) entered disabled state [ 713.424980][ T4032] veth1: left allmulticast mode [ 713.425277][ T4032] veth1: left promiscuous mode [ 713.425569][ T4032] br1: port 2(veth1) entered disabled state [ 713.491826][ T4033] vx1: left allmulticast mode [ 713.492035][ T4033] vx1: left promiscuous mode [ 713.492438][ T4033] br1: port 1(vx1) entered disabled state