[ 65.748488][ T786] br1: port 1(vx10) entered blocking state [ 65.748971][ T786] br1: port 1(vx10) entered disabled state [ 65.749298][ T786] vx10: entered allmulticast mode [ 65.751393][ T786] vx10: entered promiscuous mode [ 65.752485][ T786] br1: port 1(vx10) entered blocking state [ 65.752931][ T786] br1: port 1(vx10) entered forwarding state [ 66.124897][ T791] br1: port 2(vx20) entered blocking state [ 66.125372][ T791] br1: port 2(vx20) entered disabled state [ 66.125679][ T791] vx20: entered allmulticast mode [ 66.127684][ T791] vx20: entered promiscuous mode [ 66.128605][ T791] br1: port 2(vx20) entered blocking state [ 66.128914][ T791] br1: port 2(vx20) entered forwarding state [ 66.322010][ T793] br1: port 3(veth1) entered blocking state [ 66.323787][ T793] br1: port 3(veth1) entered disabled state [ 66.324197][ T793] veth1: entered allmulticast mode [ 66.326384][ T793] veth1: entered promiscuous mode [ 66.399006][ T45] br1: port 3(veth1) entered blocking state [ 66.399507][ T45] br1: port 3(veth1) entered forwarding state [ 66.805242][ T798] br1: port 4(veth2) entered blocking state [ 66.805566][ T798] br1: port 4(veth2) entered disabled state [ 66.805870][ T798] veth2: entered allmulticast mode [ 66.808169][ T798] veth2: entered promiscuous mode [ 66.904069][ T338] br1: port 4(veth2) entered blocking state [ 66.904523][ T338] br1: port 4(veth2) entered forwarding state [ 67.965708][ T808] systemd-sysctl (808) used greatest stack depth: 23288 bytes left [ 70.914233][ T855] br2: port 1(w1) entered blocking state [ 70.914498][ T855] br2: port 1(w1) entered disabled state [ 70.914746][ T855] w1: entered allmulticast mode [ 70.916751][ T855] w1: entered promiscuous mode [ 71.704479][ T863] br2: port 2(vx10) entered blocking state [ 71.705251][ T863] br2: port 2(vx10) entered disabled state [ 71.705698][ T863] vx10: entered allmulticast mode [ 71.709083][ T863] vx10: entered promiscuous mode [ 71.710538][ T863] br2: port 2(vx10) entered blocking state [ 71.710959][ T863] br2: port 2(vx10) entered forwarding state [ 72.382614][ T870] br2: port 3(vx20) entered blocking state [ 72.382964][ T870] br2: port 3(vx20) entered disabled state [ 72.383348][ T870] vx20: entered allmulticast mode [ 72.385355][ T870] vx20: entered promiscuous mode [ 72.385939][ T870] br2: port 3(vx20) entered blocking state [ 72.386320][ T870] br2: port 3(vx20) entered forwarding state [ 73.079207][ T338] br2: port 1(w1) entered blocking state [ 73.079829][ T338] br2: port 1(w1) entered forwarding state [ 75.597721][ T912] br2: port 1(w1) entered blocking state [ 75.598100][ T912] br2: port 1(w1) entered disabled state [ 75.598496][ T912] w1: entered allmulticast mode [ 75.600467][ T912] w1: entered promiscuous mode [ 76.256655][ T920] br2: port 2(vx10) entered blocking state [ 76.257100][ T920] br2: port 2(vx10) entered disabled state [ 76.257548][ T920] vx10: entered allmulticast mode [ 76.261160][ T920] vx10: entered promiscuous mode [ 76.261786][ T920] br2: port 2(vx10) entered blocking state [ 76.262060][ T920] br2: port 2(vx10) entered forwarding state [ 76.889129][ T927] br2: port 3(vx20) entered blocking state [ 76.889437][ T927] br2: port 3(vx20) entered disabled state [ 76.889723][ T927] vx20: entered allmulticast mode [ 76.892511][ T927] vx20: entered promiscuous mode [ 76.893061][ T927] br2: port 3(vx20) entered blocking state [ 76.893337][ T927] br2: port 3(vx20) entered forwarding state [ 77.620569][ T338] br2: port 1(w1) entered blocking state [ 77.620874][ T338] br2: port 1(w1) entered forwarding state [ 88.635387][ T1013] GACT probability NOT on [ 212.395895][ T1814] veth3: entered promiscuous mode [ 257.761033][ T2741] veth3: left promiscuous mode [ 258.203515][ T2747] veth3: entered promiscuous mode [ 305.074821][ T3674] veth3: left promiscuous mode [ 306.016570][ T3692] vx20: left allmulticast mode [ 306.017012][ T3692] vx20: left promiscuous mode [ 306.017578][ T3692] br1: port 2(vx20) entered disabled state [ 306.105681][ T3693] vx10: left allmulticast mode [ 306.105934][ T3693] vx10: left promiscuous mode [ 306.106368][ T3693] br1: port 1(vx10) entered disabled state [ 311.520083][ T3698] br1: port 1(vx10) entered blocking state [ 311.520487][ T3698] br1: port 1(vx10) entered disabled state [ 311.520788][ T3698] vx10: entered allmulticast mode [ 311.523018][ T3698] vx10: entered promiscuous mode [ 311.523546][ T3698] br1: port 1(vx10) entered blocking state [ 311.523798][ T3698] br1: port 1(vx10) entered forwarding state [ 311.680346][ T3700] br1: port 2(vx20) entered blocking state [ 311.680704][ T3700] br1: port 2(vx20) entered disabled state [ 311.680999][ T3700] vx20: entered allmulticast mode [ 311.682951][ T3700] vx20: entered promiscuous mode [ 311.683470][ T3700] br1: port 2(vx20) entered blocking state [ 311.683710][ T3700] br1: port 2(vx20) entered forwarding state [ 444.209933][ T4529] veth3: entered promiscuous mode [ 490.734851][ T5456] veth3: left promiscuous mode [ 491.239883][ T5462] veth3: entered promiscuous mode [ 538.044448][ T6389] veth3: left promiscuous mode [ 845.060129][ T11] vx20: left allmulticast mode [ 845.060429][ T11] vx20: left promiscuous mode [ 845.060773][ T11] br2: port 3(vx20) entered disabled state [ 845.063459][ T11] vx10: left allmulticast mode [ 845.063642][ T11] vx10: left promiscuous mode [ 845.063946][ T11] br2: port 2(vx10) entered disabled state [ 845.068452][ T11] w1: left allmulticast mode [ 845.068707][ T11] w1: left promiscuous mode [ 845.069077][ T11] br2: port 1(w1) entered disabled state [ 845.592287][ T11] vx20: left allmulticast mode [ 845.592523][ T11] vx20: left promiscuous mode [ 845.592865][ T11] br2: port 3(vx20) entered disabled state [ 845.594495][ T11] vx10: left allmulticast mode [ 845.594706][ T11] vx10: left promiscuous mode [ 845.595058][ T11] br2: port 2(vx10) entered disabled state [ 845.596961][ T11] w1: left allmulticast mode [ 845.597184][ T11] w1: left promiscuous mode [ 845.597507][ T11] br2: port 1(w1) entered disabled state [ 845.999213][ T11] ================================================================== [ 845.999436][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 845.999632][ T11] Read of size 8 at addr ffff88800b409a38 by task kworker/u16:0/11 [ 845.999826][ T11] [ 845.999895][ T11] CPU: 3 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 846.000094][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 846.000259][ T11] Workqueue: netns cleanup_net [ 846.000393][ T11] Call Trace: [ 846.000496][ T11] [ 846.000565][ T11] dump_stack_lvl+0x82/0xd0 [ 846.000705][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 846.000876][ T11] ? cleanup_net+0x932/0xa40 [ 846.001031][ T11] print_report+0xb4/0x270 [ 846.001164][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 846.001297][ T11] kasan_report+0xbd/0xf0 [ 846.001396][ T11] ? cleanup_net+0x932/0xa40 [ 846.001526][ T11] cleanup_net+0x932/0xa40 [ 846.001658][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 846.001792][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 846.001925][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 846.002055][ T11] ? lock_acquire+0x32/0xc0 [ 846.002181][ T11] ? process_one_work+0xe0b/0x16d0 [ 846.002316][ T11] process_one_work+0xe55/0x16d0 [ 846.002451][ T11] ? __pfx___lock_release+0x10/0x10 [ 846.002582][ T11] ? __pfx_process_one_work+0x10/0x10 [ 846.002712][ T11] ? assign_work+0x16c/0x240 [ 846.002842][ T11] worker_thread+0x58c/0xce0 [ 846.002972][ T11] ? __pfx_worker_thread+0x10/0x10 [ 846.003098][ T11] kthread+0x28a/0x350 [ 846.003196][ T11] ? __pfx_kthread+0x10/0x10 [ 846.003324][ T11] ret_from_fork+0x31/0x70 [ 846.003456][ T11] ? __pfx_kthread+0x10/0x10 [ 846.003583][ T11] ret_from_fork_asm+0x1a/0x30 [ 846.003716][ T11] [ 846.003813][ T11] [ 846.003880][ T11] Allocated by task 891: [ 846.003981][ T11] kasan_save_stack+0x24/0x50 [ 846.004110][ T11] kasan_save_track+0x14/0x30 [ 846.004235][ T11] __kasan_slab_alloc+0x59/0x70 [ 846.004362][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 846.004493][ T11] copy_net_ns+0xc6/0x340 [ 846.004591][ T11] create_new_namespaces+0x35f/0x920 [ 846.004723][ T11] unshare_nsproxy_namespaces+0x8d/0x130 [ 846.004849][ T11] ksys_unshare+0x2a9/0x660 [ 846.005008][ T11] __x64_sys_unshare+0x31/0x40 [ 846.005139][ T11] do_syscall_64+0xc1/0x1d0 [ 846.005268][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 846.005425][ T11] [ 846.005490][ T11] Freed by task 11: [ 846.005588][ T11] kasan_save_stack+0x24/0x50 [ 846.005717][ T11] kasan_save_track+0x14/0x30 [ 846.005849][ T11] kasan_save_free_info+0x3b/0x60 [ 846.005978][ T11] __kasan_slab_free+0x38/0x50 [ 846.006110][ T11] kmem_cache_free+0xf8/0x330 [ 846.006238][ T11] cleanup_net+0x5a8/0xa40 [ 846.006364][ T11] process_one_work+0xe55/0x16d0 [ 846.006491][ T11] worker_thread+0x58c/0xce0 [ 846.006619][ T11] kthread+0x28a/0x350 [ 846.006714][ T11] ret_from_fork+0x31/0x70 [ 846.006839][ T11] ret_from_fork_asm+0x1a/0x30 [ 846.006967][ T11] [ 846.007033][ T11] Last potentially related work creation: [ 846.007166][ T11] kasan_save_stack+0x24/0x50 [ 846.007303][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 846.007435][ T11] insert_work+0x34/0x230 [ 846.007540][ T11] __queue_work+0x5fd/0xa40 [ 846.007672][ T11] call_timer_fn+0x13b/0x230 [ 846.007806][ T11] __run_timers+0x3ff/0x810 [ 846.007936][ T11] run_timer_softirq+0x154/0x1c0 [ 846.008065][ T11] handle_softirqs+0x1f6/0x5c0 [ 846.008204][ T11] __irq_exit_rcu+0xc4/0x100 [ 846.008335][ T11] irq_exit_rcu+0xe/0x20 [ 846.008434][ T11] sysvec_apic_timer_interrupt+0x78/0x90 [ 846.008562][ T11] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 846.008724][ T11] [ 846.008790][ T11] Second to last potentially related work creation: [ 846.008971][ T11] kasan_save_stack+0x24/0x50 [ 846.009102][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 846.009229][ T11] insert_work+0x34/0x230 [ 846.009327][ T11] __queue_work+0x5fd/0xa40 [ 846.009456][ T11] call_timer_fn+0x13b/0x230 [ 846.009589][ T11] __run_timers+0x3ff/0x810 [ 846.009719][ T11] run_timer_softirq+0x154/0x1c0 [ 846.009852][ T11] handle_softirqs+0x1f6/0x5c0 [ 846.009980][ T11] __irq_exit_rcu+0xc4/0x100 [ 846.010110][ T11] irq_exit_rcu+0xe/0x20 [ 846.010209][ T11] sysvec_apic_timer_interrupt+0x78/0x90 [ 846.010339][ T11] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 846.010497][ T11] [ 846.010562][ T11] The buggy address belongs to the object at ffff88800b409980 [ 846.010562][ T11] which belongs to the cache net_namespace of size 6080 [ 846.010905][ T11] The buggy address is located 184 bytes inside of [ 846.010905][ T11] freed 6080-byte region [ffff88800b409980, ffff88800b40b140) [ 846.011212][ T11] [ 846.011278][ T11] The buggy address belongs to the physical page: [ 846.011435][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800b40b2c0 pfn:0xb408 [ 846.011699][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 846.011891][ T11] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 846.012052][ T11] page_type: f5(slab) [ 846.012154][ T11] raw: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 846.012380][ T11] raw: ffff88800b40b2c0 0000000000050002 00000001f5000000 0000000000000000 [ 846.012607][ T11] head: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 846.012847][ T11] head: ffff88800b40b2c0 0000000000050002 00000001f5000000 0000000000000000 [ 846.013082][ T11] head: 0080000000000003 ffffea00002d0201 ffffffffffffffff 0000000000000000 [ 846.013310][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 846.013538][ T11] page dumped because: kasan: bad access detected [ 846.013695][ T11] [ 846.013762][ T11] Memory state around the buggy address: [ 846.013886][ T11] ffff88800b409900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 846.014075][ T11] ffff88800b409980: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 846.014259][ T11] >ffff88800b409a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 846.014442][ T11] ^ [ 846.014595][ T11] ffff88800b409a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 846.014775][ T11] ffff88800b409b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 846.014954][ T11] ================================================================== [ 846.015172][ T11] Disabling lock debugging due to kernel taint [ 847.440891][T10954] br1: port 4(veth2) entered disabled state [ 847.499997][T10955] veth2: left allmulticast mode [ 847.500377][T10955] veth2: left promiscuous mode [ 847.500641][T10955] br1: port 4(veth2) entered disabled state [ 847.741257][T10959] br1: port 3(veth1) entered disabled state [ 847.796178][T10960] veth1: left allmulticast mode [ 847.796354][T10960] veth1: left promiscuous mode [ 847.796612][T10960] br1: port 3(veth1) entered disabled state [ 847.904847][T10962] vx20: left allmulticast mode [ 847.905040][T10962] vx20: left promiscuous mode [ 847.905329][T10962] br1: port 2(vx20) entered disabled state [ 848.149198][T10966] vx10: left allmulticast mode [ 848.149383][T10966] vx10: left promiscuous mode [ 848.149642][T10966] br1: port 1(vx10) entered disabled state