[ 1380.734292][ T5824] br1: port 1(vx1) entered blocking state [ 1380.734674][ T5824] br1: port 1(vx1) entered disabled state [ 1380.746448][ T5824] vx1: entered allmulticast mode [ 1380.749821][ T5824] vx1: entered promiscuous mode [ 1380.751617][ T5824] br1: port 1(vx1) entered blocking state [ 1380.751962][ T5824] br1: port 1(vx1) entered forwarding state [ 1380.840449][ T5825] br1: port 2(veth1) entered blocking state [ 1380.840764][ T5825] br1: port 2(veth1) entered disabled state [ 1380.841060][ T5825] veth1: entered allmulticast mode [ 1380.843031][ T5825] veth1: entered promiscuous mode [ 1380.931695][ T55] br1: port 2(veth1) entered blocking state [ 1380.931977][ T55] br1: port 2(veth1) entered forwarding state [ 1381.010260][ T5827] br1: port 3(veth2) entered blocking state [ 1381.011222][ T5827] br1: port 3(veth2) entered disabled state [ 1381.011544][ T5827] veth2: entered allmulticast mode [ 1381.013468][ T5827] veth2: entered promiscuous mode [ 1381.089553][ T1962] br1: port 3(veth2) entered blocking state [ 1381.089923][ T1962] br1: port 3(veth2) entered forwarding state [ 1384.418563][ T5880] br2: port 1(w1) entered blocking state [ 1384.418822][ T5880] br2: port 1(w1) entered disabled state [ 1384.419112][ T5880] w1: entered allmulticast mode [ 1384.422536][ T5880] w1: entered promiscuous mode [ 1384.945716][ T5886] br2: port 2(vx2) entered blocking state [ 1384.946094][ T5886] br2: port 2(vx2) entered disabled state [ 1384.946486][ T5886] vx2: entered allmulticast mode [ 1384.949790][ T5886] vx2: entered promiscuous mode [ 1384.951580][ T5886] br2: port 2(vx2) entered blocking state [ 1384.951920][ T5886] br2: port 2(vx2) entered forwarding state [ 1385.643232][ T55] br2: port 1(w1) entered blocking state [ 1385.643504][ T55] br2: port 1(w1) entered forwarding state [ 1387.335291][ T5917] br2: port 1(w1) entered blocking state [ 1387.335683][ T5917] br2: port 1(w1) entered disabled state [ 1387.335958][ T5917] w1: entered allmulticast mode [ 1387.338031][ T5917] w1: entered promiscuous mode [ 1387.825960][ T5923] br2: port 2(vx2) entered blocking state [ 1387.826217][ T5923] br2: port 2(vx2) entered disabled state [ 1387.826487][ T5923] vx2: entered allmulticast mode [ 1387.828754][ T5923] vx2: entered promiscuous mode [ 1387.829651][ T5923] br2: port 2(vx2) entered blocking state [ 1387.829859][ T5923] br2: port 2(vx2) entered forwarding state [ 1388.498393][ T55] br2: port 1(w1) entered blocking state [ 1388.498745][ T55] br2: port 1(w1) entered forwarding state [ 1400.178579][ T11] vx2: left allmulticast mode [ 1400.178913][ T11] vx2: left promiscuous mode [ 1400.179284][ T11] br2: port 2(vx2) entered disabled state [ 1400.183623][ T11] w1: left allmulticast mode [ 1400.183896][ T11] w1: left promiscuous mode [ 1400.184231][ T11] br2: port 1(w1) entered disabled state [ 1400.549887][ T11] vx2: left allmulticast mode [ 1400.550105][ T11] vx2: left promiscuous mode [ 1400.550443][ T11] br2: port 2(vx2) entered disabled state [ 1400.553278][ T11] w1: left allmulticast mode [ 1400.553858][ T11] w1: left promiscuous mode [ 1400.554158][ T11] br2: port 1(w1) entered disabled state [ 1400.916925][ T11] ================================================================== [ 1400.917202][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 1400.917433][ T11] Read of size 8 at addr ffff88800d771a38 by task kworker/u16:0/11 [ 1400.917666][ T11] [ 1400.917739][ T11] CPU: 0 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 1400.917944][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1400.918129][ T11] Workqueue: netns cleanup_net [ 1400.918280][ T11] Call Trace: [ 1400.918384][ T11] [ 1400.918458][ T11] dump_stack_lvl+0x82/0xd0 [ 1400.918602][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 1400.918789][ T11] ? cleanup_net+0x932/0xa40 [ 1400.918921][ T11] print_report+0xb4/0x270 [ 1400.919049][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 1400.919180][ T11] kasan_report+0xbd/0xf0 [ 1400.919283][ T11] ? cleanup_net+0x932/0xa40 [ 1400.919410][ T11] cleanup_net+0x932/0xa40 [ 1400.919537][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 1400.919668][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 1400.919795][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 1400.919927][ T11] ? lock_acquire+0x32/0xc0 [ 1400.920057][ T11] ? process_one_work+0xe0b/0x16d0 [ 1400.920208][ T11] process_one_work+0xe55/0x16d0 [ 1400.920337][ T11] ? __pfx___lock_release+0x10/0x10 [ 1400.920478][ T11] ? __pfx_process_one_work+0x10/0x10 [ 1400.920622][ T11] ? assign_work+0x16c/0x240 [ 1400.920749][ T11] worker_thread+0x58c/0xce0 [ 1400.920878][ T11] ? __pfx_worker_thread+0x10/0x10 [ 1400.921004][ T11] kthread+0x28a/0x350 [ 1400.921106][ T11] ? __pfx_kthread+0x10/0x10 [ 1400.921273][ T11] ret_from_fork+0x31/0x70 [ 1400.921399][ T11] ? __pfx_kthread+0x10/0x10 [ 1400.921528][ T11] ret_from_fork_asm+0x1a/0x30 [ 1400.921675][ T11] [ 1400.921779][ T11] [ 1400.921846][ T11] Allocated by task 5897: [ 1400.921947][ T11] kasan_save_stack+0x24/0x50 [ 1400.922092][ T11] kasan_save_track+0x14/0x30 [ 1400.922221][ T11] __kasan_slab_alloc+0x59/0x70 [ 1400.922359][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 1400.922487][ T11] copy_net_ns+0xc6/0x340 [ 1400.922580][ T11] create_new_namespaces+0x35f/0x920 [ 1400.922714][ T11] unshare_nsproxy_namespaces+0x8d/0x130 [ 1400.922845][ T11] ksys_unshare+0x2a9/0x660 [ 1400.922979][ T11] __x64_sys_unshare+0x31/0x40 [ 1400.923111][ T11] do_syscall_64+0xc1/0x1d0 [ 1400.923265][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1400.923431][ T11] [ 1400.923496][ T11] Freed by task 11: [ 1400.923598][ T11] kasan_save_stack+0x24/0x50 [ 1400.923729][ T11] kasan_save_track+0x14/0x30 [ 1400.923857][ T11] kasan_save_free_info+0x3b/0x60 [ 1400.923988][ T11] __kasan_slab_free+0x38/0x50 [ 1400.924117][ T11] kmem_cache_free+0xf8/0x330 [ 1400.924256][ T11] cleanup_net+0x5a8/0xa40 [ 1400.924384][ T11] process_one_work+0xe55/0x16d0 [ 1400.924530][ T11] worker_thread+0x58c/0xce0 [ 1400.924673][ T11] kthread+0x28a/0x350 [ 1400.924771][ T11] ret_from_fork+0x31/0x70 [ 1400.924902][ T11] ret_from_fork_asm+0x1a/0x30 [ 1400.925039][ T11] [ 1400.925110][ T11] Last potentially related work creation: [ 1400.925242][ T11] kasan_save_stack+0x24/0x50 [ 1400.925378][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 1400.925512][ T11] insert_work+0x34/0x230 [ 1400.925616][ T11] __queue_work+0x5fd/0xa40 [ 1400.925744][ T11] queue_delayed_work_on+0x8c/0xa0 [ 1400.925872][ T11] __inet_insert_ifa+0x751/0xb10 [ 1400.926001][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 1400.926128][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 1400.926261][ T11] netlink_rcv_skb+0x130/0x360 [ 1400.926388][ T11] netlink_unicast+0x44b/0x710 [ 1400.926515][ T11] netlink_sendmsg+0x723/0xbe0 [ 1400.926641][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 1400.926769][ T11] ___sys_sendmsg+0xee/0x170 [ 1400.926894][ T11] __sys_sendmsg+0x109/0x1a0 [ 1400.927022][ T11] do_syscall_64+0xc1/0x1d0 [ 1400.927152][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1400.927313][ T11] [ 1400.927379][ T11] Second to last potentially related work creation: [ 1400.927535][ T11] kasan_save_stack+0x24/0x50 [ 1400.927701][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 1400.927831][ T11] insert_work+0x34/0x230 [ 1400.927930][ T11] __queue_work+0x5fd/0xa40 [ 1400.928059][ T11] queue_delayed_work_on+0x8c/0xa0 [ 1400.928193][ T11] __inet_insert_ifa+0x751/0xb10 [ 1400.928323][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 1400.928460][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 1400.928606][ T11] netlink_rcv_skb+0x130/0x360 [ 1400.928733][ T11] netlink_unicast+0x44b/0x710 [ 1400.928861][ T11] netlink_sendmsg+0x723/0xbe0 [ 1400.928988][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 1400.929117][ T11] ___sys_sendmsg+0xee/0x170 [ 1400.929251][ T11] __sys_sendmsg+0x109/0x1a0 [ 1400.929384][ T11] do_syscall_64+0xc1/0x1d0 [ 1400.929519][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1400.929683][ T11] [ 1400.929750][ T11] The buggy address belongs to the object at ffff88800d771980 [ 1400.929750][ T11] which belongs to the cache net_namespace of size 6080 [ 1400.930109][ T11] The buggy address is located 184 bytes inside of [ 1400.930109][ T11] freed 6080-byte region [ffff88800d771980, ffff88800d773140) [ 1400.930429][ T11] [ 1400.930497][ T11] The buggy address belongs to the physical page: [ 1400.930654][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800d7732c0 pfn:0xd770 [ 1400.930918][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 1400.931116][ T11] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 1400.931289][ T11] page_type: f5(slab) [ 1400.931394][ T11] raw: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 1400.931624][ T11] raw: ffff88800d7732c0 0000000000050002 00000001f5000000 0000000000000000 [ 1400.931862][ T11] head: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 1400.932096][ T11] head: ffff88800d7732c0 0000000000050002 00000001f5000000 0000000000000000 [ 1400.932328][ T11] head: 0080000000000003 ffffea000035dc01 ffffffffffffffff 0000000000000000 [ 1400.932582][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 1400.932806][ T11] page dumped because: kasan: bad access detected [ 1400.932973][ T11] [ 1400.933047][ T11] Memory state around the buggy address: [ 1400.933173][ T11] ffff88800d771900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 1400.933364][ T11] ffff88800d771980: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1400.933544][ T11] >ffff88800d771a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1400.933731][ T11] ^ [ 1400.933891][ T11] ffff88800d771a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1400.934072][ T11] ffff88800d771b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1400.934255][ T11] ================================================================== [ 1400.934486][ T11] Disabling lock debugging due to kernel taint [ 1402.496302][ T6040] vx1: left allmulticast mode [ 1402.497042][ T6040] vx1: left promiscuous mode [ 1402.497357][ T6040] br1: port 1(vx1) entered disabled state [ 1402.728785][ T6043] br1: port 3(veth2) entered disabled state [ 1402.799059][ T6044] veth2: left allmulticast mode [ 1402.799273][ T6044] veth2: left promiscuous mode [ 1402.799579][ T6044] br1: port 3(veth2) entered disabled state [ 1402.875207][ T6045] br1: port 2(veth1) entered disabled state [ 1402.930656][ T6046] veth1: left allmulticast mode [ 1402.930856][ T6046] veth1: left promiscuous mode [ 1402.931120][ T6046] br1: port 2(veth1) entered disabled state