[ 1373.174354][T18371] br1: port 1(vx10) entered blocking state [ 1373.175273][T18371] br1: port 1(vx10) entered disabled state [ 1373.175648][T18371] vx10: entered allmulticast mode [ 1373.177620][T18371] vx10: entered promiscuous mode [ 1373.178610][T18371] br1: port 1(vx10) entered blocking state [ 1373.178975][T18371] br1: port 1(vx10) entered forwarding state [ 1373.559334][T18376] br1: port 2(vx20) entered blocking state [ 1373.560090][T18376] br1: port 2(vx20) entered disabled state [ 1373.560368][T18376] vx20: entered allmulticast mode [ 1373.562280][T18376] vx20: entered promiscuous mode [ 1373.563442][T18376] br1: port 2(vx20) entered blocking state [ 1373.563700][T18376] br1: port 2(vx20) entered forwarding state [ 1373.739129][T18378] br1: port 3(veth1) entered blocking state [ 1373.739427][T18378] br1: port 3(veth1) entered disabled state [ 1373.739708][T18378] veth1: entered allmulticast mode [ 1373.742674][T18378] veth1: entered promiscuous mode [ 1373.833767][T17249] br1: port 3(veth1) entered blocking state [ 1373.834239][T17249] br1: port 3(veth1) entered forwarding state [ 1374.094724][T18382] br1: port 4(veth2) entered blocking state [ 1374.095060][T18382] br1: port 4(veth2) entered disabled state [ 1374.095358][T18382] veth2: entered allmulticast mode [ 1374.097253][T18382] veth2: entered promiscuous mode [ 1374.184422][T13215] br1: port 4(veth2) entered blocking state [ 1374.184833][T13215] br1: port 4(veth2) entered forwarding state [ 1377.947945][T18440] br2: port 1(w1) entered blocking state [ 1377.948192][T18440] br2: port 1(w1) entered disabled state [ 1377.948450][T18440] w1: entered allmulticast mode [ 1377.950653][T18440] w1: entered promiscuous mode [ 1378.583060][T18448] br2: port 2(vx10) entered blocking state [ 1378.583429][T18448] br2: port 2(vx10) entered disabled state [ 1378.584135][T18448] vx10: entered allmulticast mode [ 1378.586537][T18448] vx10: entered promiscuous mode [ 1378.587196][T18448] br2: port 2(vx10) entered blocking state [ 1378.587647][T18448] br2: port 2(vx10) entered forwarding state [ 1379.228726][T18455] br2: port 3(vx20) entered blocking state [ 1379.229206][T18455] br2: port 3(vx20) entered disabled state [ 1379.229696][T18455] vx20: entered allmulticast mode [ 1379.232315][T18455] vx20: entered promiscuous mode [ 1379.232887][T18455] br2: port 3(vx20) entered blocking state [ 1379.233157][T18455] br2: port 3(vx20) entered forwarding state [ 1379.942832][T17249] br2: port 1(w1) entered blocking state [ 1379.943312][T17249] br2: port 1(w1) entered forwarding state [ 1382.440803][T18495] br2: port 1(w1) entered blocking state [ 1382.441151][T18495] br2: port 1(w1) entered disabled state [ 1382.441520][T18495] w1: entered allmulticast mode [ 1382.445555][T18495] w1: entered promiscuous mode [ 1383.177818][T18503] br2: port 2(vx10) entered blocking state [ 1383.178132][T18503] br2: port 2(vx10) entered disabled state [ 1383.178417][T18503] vx10: entered allmulticast mode [ 1383.180290][T18503] vx10: entered promiscuous mode [ 1383.180883][T18503] br2: port 2(vx10) entered blocking state [ 1383.181140][T18503] br2: port 2(vx10) entered forwarding state [ 1383.806964][T18510] br2: port 3(vx20) entered blocking state [ 1383.807285][T18510] br2: port 3(vx20) entered disabled state [ 1383.808122][T18510] vx20: entered allmulticast mode [ 1383.810060][T18510] vx20: entered promiscuous mode [ 1383.810617][T18510] br2: port 3(vx20) entered blocking state [ 1383.810876][T18510] br2: port 3(vx20) entered forwarding state [ 1384.498094][T17249] br2: port 1(w1) entered blocking state [ 1384.498414][T17249] br2: port 1(w1) entered forwarding state [ 1432.075762][T19243] veth3: entered promiscuous mode [ 1479.680962][T20170] veth3: left promiscuous mode [ 1480.153323][T20176] veth3: entered promiscuous mode [ 1528.491788][T21103] veth3: left promiscuous mode [ 1529.409974][T21121] vx20: left allmulticast mode [ 1529.410251][T21121] vx20: left promiscuous mode [ 1529.410641][T21121] br1: port 2(vx20) entered disabled state [ 1529.501198][T21122] vx10: left allmulticast mode [ 1529.501488][T21122] vx10: left promiscuous mode [ 1529.501845][T21122] br1: port 1(vx10) entered disabled state [ 1534.880983][T21127] br1: port 1(vx10) entered blocking state [ 1534.881370][T21127] br1: port 1(vx10) entered disabled state [ 1534.881672][T21127] vx10: entered allmulticast mode [ 1534.883629][T21127] vx10: entered promiscuous mode [ 1534.892230][T21127] br1: port 1(vx10) entered blocking state [ 1534.892534][T21127] br1: port 1(vx10) entered forwarding state [ 1535.044613][T21129] br1: port 2(vx20) entered blocking state [ 1535.044998][T21129] br1: port 2(vx20) entered disabled state [ 1535.045282][T21129] vx20: entered allmulticast mode [ 1535.047254][T21129] vx20: entered promiscuous mode [ 1535.047823][T21129] br1: port 2(vx20) entered blocking state [ 1535.048079][T21129] br1: port 2(vx20) entered forwarding state [ 1579.585468][T21807] veth3: entered promiscuous mode [ 1625.550624][T22734] veth3: left promiscuous mode [ 1626.007344][T22740] veth3: entered promiscuous mode [ 1672.305828][T23667] veth3: left promiscuous mode [ 1673.487320][T23690] vx20: left allmulticast mode [ 1673.487585][T23690] vx20: left promiscuous mode [ 1673.487909][T23690] br1: port 2(vx20) entered disabled state [ 1673.570564][T23691] vx10: left allmulticast mode [ 1673.570860][T23691] vx10: left promiscuous mode [ 1673.571206][T23691] br1: port 1(vx10) entered disabled state [ 1678.949478][T23696] br1: port 1(vx10) entered blocking state [ 1678.949808][T23696] br1: port 1(vx10) entered disabled state [ 1678.950139][T23696] vx10: entered allmulticast mode [ 1678.953334][T23696] vx10: entered promiscuous mode [ 1678.953970][T23696] br1: port 1(vx10) entered blocking state [ 1678.954306][T23696] br1: port 1(vx10) entered forwarding state [ 1679.121350][T23698] br1: port 2(vx20) entered blocking state [ 1679.121706][T23698] br1: port 2(vx20) entered disabled state [ 1679.122021][T23698] vx20: entered allmulticast mode [ 1679.123975][T23698] vx20: entered promiscuous mode [ 1679.125059][T23698] br1: port 2(vx20) entered blocking state [ 1679.125343][T23698] br1: port 2(vx20) entered forwarding state [ 1973.932039][T26973] vx20: left allmulticast mode [ 1973.932275][T26973] vx20: left promiscuous mode [ 1973.932609][T26973] br1: port 2(vx20) entered disabled state [ 1974.004866][T26974] vx10: left allmulticast mode [ 1974.005103][T26974] vx10: left promiscuous mode [ 1974.005435][T26974] br1: port 1(vx10) entered disabled state [ 1979.348458][T26979] br1: port 1(vx10) entered blocking state [ 1979.348784][T26979] br1: port 1(vx10) entered disabled state [ 1979.349072][T26979] vx10: entered allmulticast mode [ 1979.351034][T26979] vx10: entered promiscuous mode [ 1979.351563][T26979] br1: port 1(vx10) entered blocking state [ 1979.351818][T26979] br1: port 1(vx10) entered forwarding state [ 1979.497376][T26981] br1: port 2(vx20) entered blocking state [ 1979.497869][T26981] br1: port 2(vx20) entered disabled state [ 1979.498259][T26981] vx20: entered allmulticast mode [ 1979.500165][T26981] vx20: entered promiscuous mode [ 1979.500712][T26981] br1: port 2(vx20) entered blocking state [ 1979.500966][T26981] br1: port 2(vx20) entered forwarding state [ 2080.343165][ T11] vx20: left allmulticast mode [ 2080.343577][ T11] vx20: left promiscuous mode [ 2080.344081][ T11] br2: port 3(vx20) entered disabled state [ 2080.347718][ T11] vx10: left allmulticast mode [ 2080.347946][ T11] vx10: left promiscuous mode [ 2080.348324][ T11] br2: port 2(vx10) entered disabled state [ 2080.351088][ T11] w1: left allmulticast mode [ 2080.351309][ T11] w1: left promiscuous mode [ 2080.352451][ T11] br2: port 1(w1) entered disabled state [ 2080.868103][ T11] vx20: left allmulticast mode [ 2080.868345][ T11] vx20: left promiscuous mode [ 2080.868676][ T11] br2: port 3(vx20) entered disabled state [ 2080.870922][ T11] vx10: left allmulticast mode [ 2080.871114][ T11] vx10: left promiscuous mode [ 2080.871422][ T11] br2: port 2(vx10) entered disabled state [ 2080.873983][ T11] w1: left allmulticast mode [ 2080.874169][ T11] w1: left promiscuous mode [ 2080.875260][ T11] br2: port 1(w1) entered disabled state [ 2081.258700][ T11] ================================================================== [ 2081.258920][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 2081.259121][ T11] Read of size 8 at addr ffff888008879a38 by task kworker/u16:0/11 [ 2081.259302][ T11] [ 2081.259371][ T11] CPU: 1 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 2081.259570][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2081.259728][ T11] Workqueue: netns cleanup_net [ 2081.259860][ T11] Call Trace: [ 2081.259957][ T11] [ 2081.260034][ T11] dump_stack_lvl+0x82/0xd0 [ 2081.260169][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 2081.260331][ T11] ? cleanup_net+0x932/0xa40 [ 2081.260458][ T11] print_report+0xb4/0x270 [ 2081.260586][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 2081.260724][ T11] kasan_report+0xbd/0xf0 [ 2081.260824][ T11] ? cleanup_net+0x932/0xa40 [ 2081.260955][ T11] cleanup_net+0x932/0xa40 [ 2081.261080][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 2081.261209][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 2081.261332][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 2081.261459][ T11] ? lock_acquire+0x32/0xc0 [ 2081.261585][ T11] ? process_one_work+0xe0b/0x16d0 [ 2081.261715][ T11] process_one_work+0xe55/0x16d0 [ 2081.261845][ T11] ? __pfx___lock_release+0x10/0x10 [ 2081.261975][ T11] ? __pfx_process_one_work+0x10/0x10 [ 2081.262103][ T11] ? assign_work+0x16c/0x240 [ 2081.262229][ T11] worker_thread+0x58c/0xce0 [ 2081.262358][ T11] ? __pfx_worker_thread+0x10/0x10 [ 2081.262484][ T11] kthread+0x28a/0x350 [ 2081.262581][ T11] ? __pfx_kthread+0x10/0x10 [ 2081.262706][ T11] ret_from_fork+0x31/0x70 [ 2081.262835][ T11] ? __pfx_kthread+0x10/0x10 [ 2081.262958][ T11] ret_from_fork_asm+0x1a/0x30 [ 2081.263098][ T11] [ 2081.263198][ T11] [ 2081.263266][ T11] Allocated by task 18474: [ 2081.263392][ T11] kasan_save_stack+0x24/0x50 [ 2081.263521][ T11] kasan_save_track+0x14/0x30 [ 2081.263644][ T11] __kasan_slab_alloc+0x59/0x70 [ 2081.263767][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 2081.263894][ T11] copy_net_ns+0xc6/0x340 [ 2081.263992][ T11] create_new_namespaces+0x35f/0x920 [ 2081.264138][ T11] unshare_nsproxy_namespaces+0x8d/0x130 [ 2081.264261][ T11] ksys_unshare+0x2a9/0x660 [ 2081.264392][ T11] __x64_sys_unshare+0x31/0x40 [ 2081.264518][ T11] do_syscall_64+0xc1/0x1d0 [ 2081.264647][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 2081.264809][ T11] [ 2081.264872][ T11] Freed by task 11: [ 2081.264965][ T11] kasan_save_stack+0x24/0x50 [ 2081.265097][ T11] kasan_save_track+0x14/0x30 [ 2081.265220][ T11] kasan_save_free_info+0x3b/0x60 [ 2081.265346][ T11] __kasan_slab_free+0x38/0x50 [ 2081.265470][ T11] kmem_cache_free+0xf8/0x330 [ 2081.265594][ T11] cleanup_net+0x5a8/0xa40 [ 2081.265716][ T11] process_one_work+0xe55/0x16d0 [ 2081.265842][ T11] worker_thread+0x58c/0xce0 [ 2081.265966][ T11] kthread+0x28a/0x350 [ 2081.266064][ T11] ret_from_fork+0x31/0x70 [ 2081.266190][ T11] ret_from_fork_asm+0x1a/0x30 [ 2081.266315][ T11] [ 2081.266381][ T11] Last potentially related work creation: [ 2081.266505][ T11] kasan_save_stack+0x24/0x50 [ 2081.266636][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 2081.266761][ T11] insert_work+0x34/0x230 [ 2081.266856][ T11] __queue_work+0x5fd/0xa40 [ 2081.266983][ T11] call_timer_fn+0x13b/0x230 [ 2081.267117][ T11] __run_timers+0x3ff/0x810 [ 2081.267242][ T11] run_timer_softirq+0x154/0x1c0 [ 2081.267368][ T11] handle_softirqs+0x1f6/0x5c0 [ 2081.267493][ T11] __irq_exit_rcu+0xc4/0x100 [ 2081.267620][ T11] irq_exit_rcu+0xe/0x20 [ 2081.267715][ T11] sysvec_apic_timer_interrupt+0x78/0x90 [ 2081.267848][ T11] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 2081.268009][ T11] [ 2081.268075][ T11] Second to last potentially related work creation: [ 2081.268231][ T11] kasan_save_stack+0x24/0x50 [ 2081.268360][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 2081.268485][ T11] insert_work+0x34/0x230 [ 2081.268581][ T11] __queue_work+0x5fd/0xa40 [ 2081.268705][ T11] call_timer_fn+0x13b/0x230 [ 2081.268828][ T11] __run_timers+0x3ff/0x810 [ 2081.268956][ T11] run_timer_softirq+0x154/0x1c0 [ 2081.269081][ T11] handle_softirqs+0x1f6/0x5c0 [ 2081.269207][ T11] __irq_exit_rcu+0xc4/0x100 [ 2081.269334][ T11] irq_exit_rcu+0xe/0x20 [ 2081.269430][ T11] sysvec_apic_timer_interrupt+0x78/0x90 [ 2081.269555][ T11] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 2081.269710][ T11] [ 2081.269774][ T11] The buggy address belongs to the object at ffff888008879980 [ 2081.269774][ T11] which belongs to the cache net_namespace of size 6080 [ 2081.270104][ T11] The buggy address is located 184 bytes inside of [ 2081.270104][ T11] freed 6080-byte region [ffff888008879980, ffff88800887b140) [ 2081.270401][ T11] [ 2081.270463][ T11] The buggy address belongs to the physical page: [ 2081.270615][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800887b2c0 pfn:0x8878 [ 2081.270869][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 2081.271057][ T11] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 2081.271216][ T11] page_type: f5(slab) [ 2081.271316][ T11] raw: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 2081.271548][ T11] raw: ffff88800887b2c0 0000000000050002 00000001f5000000 0000000000000000 [ 2081.271766][ T11] head: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 2081.271985][ T11] head: ffff88800887b2c0 0000000000050002 00000001f5000000 0000000000000000 [ 2081.272203][ T11] head: 0080000000000003 ffffea0000221e01 ffffffffffffffff 0000000000000000 [ 2081.272426][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 2081.272644][ T11] page dumped because: kasan: bad access detected [ 2081.272805][ T11] [ 2081.272871][ T11] Memory state around the buggy address: [ 2081.272995][ T11] ffff888008879900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 2081.273177][ T11] ffff888008879980: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 2081.273360][ T11] >ffff888008879a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 2081.273541][ T11] ^ [ 2081.273691][ T11] ffff888008879a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 2081.273878][ T11] ffff888008879b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 2081.274062][ T11] ================================================================== [ 2081.274307][ T11] Disabling lock debugging due to kernel taint [ 2082.732481][T28884] br1: port 4(veth2) entered disabled state [ 2082.783713][T28885] veth2: left allmulticast mode [ 2082.783937][T28885] veth2: left promiscuous mode [ 2082.784211][T28885] br1: port 4(veth2) entered disabled state [ 2082.987898][T28888] br1: port 3(veth1) entered disabled state [ 2083.051531][T28889] veth1: left allmulticast mode [ 2083.051768][T28889] veth1: left promiscuous mode [ 2083.052053][T28889] br1: port 3(veth1) entered disabled state [ 2083.171626][T28891] vx20: left allmulticast mode [ 2083.171853][T28891] vx20: left promiscuous mode [ 2083.172126][T28891] br1: port 2(vx20) entered disabled state [ 2083.406103][T28895] vx10: left allmulticast mode [ 2083.406327][T28895] vx10: left promiscuous mode [ 2083.406619][T28895] br1: port 1(vx10) entered disabled state