[ 1378.859235][T17851] br1: port 1(vx10) entered blocking state [ 1378.860923][T17851] br1: port 1(vx10) entered disabled state [ 1378.861440][T17851] vx10: entered allmulticast mode [ 1378.865420][T17851] vx10: entered promiscuous mode [ 1378.867381][T17851] br1: port 1(vx10) entered blocking state [ 1378.868054][T17851] br1: port 1(vx10) entered forwarding state [ 1379.226236][T17856] br1: port 2(vx20) entered blocking state [ 1379.226573][T17856] br1: port 2(vx20) entered disabled state [ 1379.226870][T17856] vx20: entered allmulticast mode [ 1379.228875][T17856] vx20: entered promiscuous mode [ 1379.230082][T17856] br1: port 2(vx20) entered blocking state [ 1379.230358][T17856] br1: port 2(vx20) entered forwarding state [ 1379.398280][T17858] br1: port 3(veth1) entered blocking state [ 1379.398598][T17858] br1: port 3(veth1) entered disabled state [ 1379.398892][T17858] veth1: entered allmulticast mode [ 1379.401092][T17858] veth1: entered promiscuous mode [ 1379.481182][ T37] br1: port 3(veth1) entered blocking state [ 1379.481723][ T37] br1: port 3(veth1) entered forwarding state [ 1379.902832][T17863] br1: port 4(veth2) entered blocking state [ 1379.903359][T17863] br1: port 4(veth2) entered disabled state [ 1379.904430][T17863] veth2: entered allmulticast mode [ 1379.908183][T17863] veth2: entered promiscuous mode [ 1380.017421][ T37] br1: port 4(veth2) entered blocking state [ 1380.017867][ T37] br1: port 4(veth2) entered forwarding state [ 1383.958720][T17920] br2: port 1(w1) entered blocking state [ 1383.959010][T17920] br2: port 1(w1) entered disabled state [ 1383.959308][T17920] w1: entered allmulticast mode [ 1383.963057][T17920] w1: entered promiscuous mode [ 1384.737022][T17928] br2: port 2(vx10) entered blocking state [ 1384.737320][T17928] br2: port 2(vx10) entered disabled state [ 1384.737614][T17928] vx10: entered allmulticast mode [ 1384.739576][T17928] vx10: entered promiscuous mode [ 1384.740144][T17928] br2: port 2(vx10) entered blocking state [ 1384.740427][T17928] br2: port 2(vx10) entered forwarding state [ 1385.385744][T17935] br2: port 3(vx20) entered blocking state [ 1385.386105][T17935] br2: port 3(vx20) entered disabled state [ 1385.386428][T17935] vx20: entered allmulticast mode [ 1385.389361][T17935] vx20: entered promiscuous mode [ 1385.389981][T17935] br2: port 3(vx20) entered blocking state [ 1385.390316][T17935] br2: port 3(vx20) entered forwarding state [ 1386.159331][T13782] br2: port 1(w1) entered blocking state [ 1386.159907][T13782] br2: port 1(w1) entered forwarding state [ 1388.789252][T17977] br2: port 1(w1) entered blocking state [ 1388.789573][T17977] br2: port 1(w1) entered disabled state [ 1388.789853][T17977] w1: entered allmulticast mode [ 1388.792606][T17977] w1: entered promiscuous mode [ 1389.511657][T17985] br2: port 2(vx10) entered blocking state [ 1389.511983][T17985] br2: port 2(vx10) entered disabled state [ 1389.512288][T17985] vx10: entered allmulticast mode [ 1389.514230][T17985] vx10: entered promiscuous mode [ 1389.514832][T17985] br2: port 2(vx10) entered blocking state [ 1389.515092][T17985] br2: port 2(vx10) entered forwarding state [ 1390.139557][T17992] br2: port 3(vx20) entered blocking state [ 1390.139923][T17992] br2: port 3(vx20) entered disabled state [ 1390.140349][T17992] vx20: entered allmulticast mode [ 1390.143459][T17992] vx20: entered promiscuous mode [ 1390.144080][T17992] br2: port 3(vx20) entered blocking state [ 1390.144426][T17992] br2: port 3(vx20) entered forwarding state [ 1390.876539][ T37] br2: port 1(w1) entered blocking state [ 1390.876955][ T37] br2: port 1(w1) entered forwarding state [ 1495.198013][ T11] vx20: left allmulticast mode [ 1495.198344][ T11] vx20: left promiscuous mode [ 1495.198742][ T11] br2: port 3(vx20) entered disabled state [ 1495.201318][ T11] vx10: left allmulticast mode [ 1495.201524][ T11] vx10: left promiscuous mode [ 1495.201838][ T11] br2: port 2(vx10) entered disabled state [ 1495.203696][ T11] w1: left allmulticast mode [ 1495.203896][ T11] w1: left promiscuous mode [ 1495.204195][ T11] br2: port 1(w1) entered disabled state [ 1495.643994][ T11] vx20: left allmulticast mode [ 1495.644229][ T11] vx20: left promiscuous mode [ 1495.644592][ T11] br2: port 3(vx20) entered disabled state [ 1495.646933][ T11] vx10: left allmulticast mode [ 1495.647127][ T11] vx10: left promiscuous mode [ 1495.647427][ T11] br2: port 2(vx10) entered disabled state [ 1495.649942][ T11] w1: left allmulticast mode [ 1495.650128][ T11] w1: left promiscuous mode [ 1495.650471][ T11] br2: port 1(w1) entered disabled state [ 1495.999602][ T11] ================================================================== [ 1495.999830][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 1496.000032][ T11] Read of size 8 at addr ffff888005211a38 by task kworker/u16:0/11 [ 1496.000212][ T11] [ 1496.000278][ T11] CPU: 3 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 1496.000478][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1496.000651][ T11] Workqueue: netns cleanup_net [ 1496.000790][ T11] Call Trace: [ 1496.000887][ T11] <TASK> [ 1496.000984][ T11] dump_stack_lvl+0x82/0xd0 [ 1496.001119][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 1496.001286][ T11] ? cleanup_net+0x932/0xa40 [ 1496.001428][ T11] print_report+0xb4/0x270 [ 1496.001566][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 1496.001702][ T11] kasan_report+0xbd/0xf0 [ 1496.001825][ T11] ? cleanup_net+0x932/0xa40 [ 1496.001963][ T11] cleanup_net+0x932/0xa40 [ 1496.002090][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 1496.002240][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 1496.002376][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 1496.002517][ T11] ? lock_acquire+0x32/0xc0 [ 1496.002665][ T11] ? process_one_work+0xe0b/0x16d0 [ 1496.002794][ T11] process_one_work+0xe55/0x16d0 [ 1496.002920][ T11] ? __pfx___lock_release+0x10/0x10 [ 1496.003069][ T11] ? __pfx_process_one_work+0x10/0x10 [ 1496.003204][ T11] ? assign_work+0x16c/0x240 [ 1496.003340][ T11] worker_thread+0x58c/0xce0 [ 1496.003475][ T11] ? __pfx_worker_thread+0x10/0x10 [ 1496.003616][ T11] kthread+0x28a/0x350 [ 1496.003722][ T11] ? __pfx_kthread+0x10/0x10 [ 1496.003846][ T11] ret_from_fork+0x31/0x70 [ 1496.003988][ T11] ? __pfx_kthread+0x10/0x10 [ 1496.004116][ T11] ret_from_fork_asm+0x1a/0x30 [ 1496.004269][ T11] </TASK> [ 1496.004379][ T11] [ 1496.004450][ T11] Allocated by task 17956: [ 1496.004601][ T11] kasan_save_stack+0x24/0x50 [ 1496.004736][ T11] kasan_save_track+0x14/0x30 [ 1496.004882][ T11] __kasan_slab_alloc+0x59/0x70 [ 1496.005006][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 1496.005160][ T11] copy_net_ns+0xc6/0x340 [ 1496.005256][ T11] create_new_namespaces+0x35f/0x920 [ 1496.005397][ T11] unshare_nsproxy_namespaces+0x8d/0x130 [ 1496.005535][ T11] ksys_unshare+0x2a9/0x660 [ 1496.005664][ T11] __x64_sys_unshare+0x31/0x40 [ 1496.005814][ T11] do_syscall_64+0xc1/0x1d0 [ 1496.005946][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1496.006130][ T11] [ 1496.006203][ T11] Freed by task 11: [ 1496.006313][ T11] kasan_save_stack+0x24/0x50 [ 1496.006442][ T11] kasan_save_track+0x14/0x30 [ 1496.006579][ T11] kasan_save_free_info+0x3b/0x60 [ 1496.006708][ T11] __kasan_slab_free+0x38/0x50 [ 1496.006836][ T11] kmem_cache_free+0xf8/0x330 [ 1496.006973][ T11] cleanup_net+0x5a8/0xa40 [ 1496.007096][ T11] process_one_work+0xe55/0x16d0 [ 1496.007233][ T11] worker_thread+0x58c/0xce0 [ 1496.007367][ T11] kthread+0x28a/0x350 [ 1496.007465][ T11] ret_from_fork+0x31/0x70 [ 1496.007588][ T11] ret_from_fork_asm+0x1a/0x30 [ 1496.007732][ T11] [ 1496.007798][ T11] Last potentially related work creation: [ 1496.007942][ T11] kasan_save_stack+0x24/0x50 [ 1496.008071][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 1496.008203][ T11] insert_work+0x34/0x230 [ 1496.008320][ T11] __queue_work+0x5fd/0xa40 [ 1496.008444][ T11] queue_delayed_work_on+0x8c/0xa0 [ 1496.008578][ T11] __inet_insert_ifa+0x751/0xb10 [ 1496.008705][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 1496.008842][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 1496.008975][ T11] netlink_rcv_skb+0x130/0x360 [ 1496.009122][ T11] netlink_unicast+0x44b/0x710 [ 1496.009250][ T11] netlink_sendmsg+0x723/0xbe0 [ 1496.009389][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 1496.009525][ T11] ___sys_sendmsg+0xee/0x170 [ 1496.009649][ T11] __sys_sendmsg+0x109/0x1a0 [ 1496.009773][ T11] do_syscall_64+0xc1/0x1d0 [ 1496.009919][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1496.010096][ T11] [ 1496.010163][ T11] Second to last potentially related work creation: [ 1496.010335][ T11] kasan_save_stack+0x24/0x50 [ 1496.010465][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 1496.010589][ T11] insert_work+0x34/0x230 [ 1496.010737][ T11] __queue_work+0x5fd/0xa40 [ 1496.010861][ T11] queue_delayed_work_on+0x8c/0xa0 [ 1496.011002][ T11] __inet_insert_ifa+0x751/0xb10 [ 1496.011127][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 1496.011256][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 1496.011383][ T11] netlink_rcv_skb+0x130/0x360 [ 1496.011517][ T11] netlink_unicast+0x44b/0x710 [ 1496.011644][ T11] netlink_sendmsg+0x723/0xbe0 [ 1496.011769][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 1496.011892][ T11] ___sys_sendmsg+0xee/0x170 [ 1496.012020][ T11] __sys_sendmsg+0x109/0x1a0 [ 1496.012148][ T11] do_syscall_64+0xc1/0x1d0 [ 1496.012277][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1496.012451][ T11] [ 1496.012516][ T11] The buggy address belongs to the object at ffff888005211980 [ 1496.012516][ T11] which belongs to the cache net_namespace of size 6080 [ 1496.012843][ T11] The buggy address is located 184 bytes inside of [ 1496.012843][ T11] freed 6080-byte region [ffff888005211980, ffff888005213140) [ 1496.013145][ T11] [ 1496.013210][ T11] The buggy address belongs to the physical page: [ 1496.013362][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880052132c0 pfn:0x5210 [ 1496.013615][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 1496.013798][ T11] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 1496.013961][ T11] page_type: f5(slab) [ 1496.014064][ T11] raw: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 1496.014287][ T11] raw: ffff8880052132c0 0000000000050002 00000001f5000000 0000000000000000 [ 1496.014503][ T11] head: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 1496.014721][ T11] head: ffff8880052132c0 0000000000050002 00000001f5000000 0000000000000000 [ 1496.014944][ T11] head: 0080000000000003 ffffea0000148401 ffffffffffffffff 0000000000000000 [ 1496.015162][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 1496.015375][ T11] page dumped because: kasan: bad access detected [ 1496.015527][ T11] [ 1496.015589][ T11] Memory state around the buggy address: [ 1496.015717][ T11] ffff888005211900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 1496.015905][ T11] ffff888005211980: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1496.016081][ T11] >ffff888005211a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1496.016261][ T11] ^ [ 1496.016408][ T11] ffff888005211a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1496.016588][ T11] ffff888005211b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1496.016765][ T11] ================================================================== [ 1496.016968][ T11] Disabling lock debugging due to kernel taint [ 1497.417309][T18285] br1: port 4(veth2) entered disabled state [ 1497.487883][T18286] veth2: left allmulticast mode [ 1497.488089][T18286] veth2: left promiscuous mode [ 1497.488373][T18286] br1: port 4(veth2) entered disabled state [ 1497.735951][T18290] br1: port 3(veth1) entered disabled state [ 1497.792428][T18291] veth1: left allmulticast mode [ 1497.793117][T18291] veth1: left promiscuous mode [ 1497.793400][T18291] br1: port 3(veth1) entered disabled state [ 1497.906344][T18293] vx20: left allmulticast mode [ 1497.906660][T18293] vx20: left promiscuous mode [ 1497.906950][T18293] br1: port 2(vx20) entered disabled state [ 1498.190192][T18297] vx10: left allmulticast mode [ 1498.190388][T18297] vx10: left promiscuous mode [ 1498.191170][T18297] br1: port 1(vx10) entered disabled state